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Bolognesi M, Prosa M, Toerker M, Lopez Sanchez L, Wieczorek M, Giacomelli C, Benvenuti E, Pellacani P, Elferink A, Morschhauser A, Sola L, Damin F, Chiari M, Whatton M, Haenni E, Kallweit D, Marabelli F, Peters J, Toffanin S. A Fully Integrated Miniaturized Optical Biosensor for Fast and Multiplexing Plasmonic Detection of High- and Low-Molecular-Weight Analytes. Adv Mater 2023:e2208719. [PMID: 36932736 DOI: 10.1002/adma.202208719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 03/14/2023] [Indexed: 05/06/2023]
Abstract
Optical biosensors based on plasmonic sensing schemes combine high sensitivity and selectivity with label-free detection. However, the use of bulky optical components is still hampering the possibility of obtaining miniaturized systems required for analysis in real settings. Here, a fully miniaturized optical biosensor prototype based on plasmonic detection is demonstrated, which enables fast and multiplex sensing of analytes with high- and low molecular weight (80 000 and 582 Da) as quality and safety parameters for milk: a protein (lactoferrin) and an antibiotic (streptomycin). The optical sensor is based on the smart integration of: i) miniaturized organic optoelectronic devices used as light-emitting and light-sensing elements and ii) a functionalized nanostructured plasmonic grating for highly sensitive and specific localized surface plasmon resonance (SPR) detection. The sensor provides quantitative and linear response reaching a limit of detection of 10-4 refractive index units once it is calibrated by standard solutions. Analyte-specific and rapid (15 min long) immunoassay-based detection is demonstrated for both targets. By using a custom algorithm based on principal-component analysis, a linear dose-response curve is constructed which correlates with a limit of detection (LOD) as low as 3.7 µg mL-1 for lactoferrin, thus assessing that the miniaturized optical biosensor is well-aligned with the chosen reference benchtop SPR method.
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Affiliation(s)
- Margherita Bolognesi
- Institute of Nanostructured Materials (ISMN) - National Research Council (CNR), Via P. Gobetti 101, Bologna, 40129, Italy
| | - Mario Prosa
- Institute of Nanostructured Materials (ISMN) - National Research Council (CNR), Via P. Gobetti 101, Bologna, 40129, Italy
| | - Michael Toerker
- Fraunhofer FEP, Winterbergstraße 28, 01277, Dresden, Germany
| | | | | | | | - Emilia Benvenuti
- Institute of Nanostructured Materials (ISMN) - National Research Council (CNR), Via P. Gobetti 101, Bologna, 40129, Italy
| | - Paola Pellacani
- Plasmore s.r.l, Viale Vittorio Emanuele II 4, Pavia, 27100, Italy
| | - Alexander Elferink
- Wageningen Food Safety Research - Wageningen University and Research, Akkermaalsbos 2, Wageningen, 6708 WB, The Netherlands
| | | | - Laura Sola
- SCITEC Istituto di Scienze e Tecnologie Chimiche "G. Natta" - National Research Council (CNR), Via Mario Bianco 9, Milano, 20131, Italy
| | - Francesco Damin
- SCITEC Istituto di Scienze e Tecnologie Chimiche "G. Natta" - National Research Council (CNR), Via Mario Bianco 9, Milano, 20131, Italy
| | - Marcella Chiari
- SCITEC Istituto di Scienze e Tecnologie Chimiche "G. Natta" - National Research Council (CNR), Via Mario Bianco 9, Milano, 20131, Italy
| | - Mark Whatton
- QuadraChem Laboratories Ltd (QCL), Riverside - Forest Row Business Park, East Sussex, RH18 5DW, UK
| | - Etienne Haenni
- CSEM Center Muttenz, Tramstrasse 99, Muttenz, CH-4132, Switzerland
| | - David Kallweit
- CSEM Center Muttenz, Tramstrasse 99, Muttenz, CH-4132, Switzerland
| | - Franco Marabelli
- Physics Department - University of Pavia, Via A. Bassi 6, Pavia, 27100, Italy
| | - Jeroen Peters
- Wageningen Food Safety Research - Wageningen University and Research, Akkermaalsbos 2, Wageningen, 6708 WB, The Netherlands
| | - Stefano Toffanin
- Institute of Nanostructured Materials (ISMN) - National Research Council (CNR), Via P. Gobetti 101, Bologna, 40129, Italy
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2
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Bolognesi M, Rossi L, Biagi A, Coccia M, Sticozzi C, Comastri G, Aschieri D. P24 WEAREBLE CARDIOVERTER – DEFIBRILLATOR : UTILITY AND USER FRIENDLINESS. Eur Heart J Suppl 2022. [DOI: 10.1093/eurheartj/suac012.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Background
Worldwide, cardiovascular disease are still a major mode of death, being sudden arrhythmic death (SCD)25 % of total death. Implantable cardioverter defibrillator (ICD) is an effective weapon for SCD prevention in high risk patients with reasonable expectation of survival with good functional status for >1 year. However sometimes the risk of SCD can be transient, so the use of a wearable cardioverter defibrillator (WCD) is considered.
Methods
We considered consecutively 40 patients discharged from our cardiology department of Piacenza and Castel san Giovanni that, for potentially transient high risk of SCD, weared a WCD from August 2017 to September 2021, after a systematic education session lasting 30 – 45 minutes. They are followed through remote monitoring.
Results
Out of 40 patients, with average age 66 years old and average left ventricular ejection fraction (LVEF) 29%, 88% were males, 70 % suffered from arterial hypertension, 32% diabetes mellitus, 17,5 % peripheral vascular disease, 35 % chronic renal failure, 55% heart failure, 7,5% previous stroke. 56% of these patients weared WCD for severe systolic disfunction in ischemic cardiac disease after recent myocardial infarction, after percutaneous coronary intervention or coronary artery bypass graft, 7% after removal of an infected ICD, 9 % whilst awaiting completion of diagnostic tests (chanalopathies/right arrhythmogenic ventricular cardiomyopathy), 34% after newly diagnosed cardiomyopathy.The patients were discharged in high risk mode of SCD with WCD protection.The average wearing time of WCD was 51 days and 22,98 hours daily. We received 953 trasmissions, with 21 events: 7 ventricular tachicardia, 4 Sopraventricular tachicardia and 5 T wave oversensing .Neither inappropriate shock and neither death were detected .After wearing time and after clinical evaluation, only 52% of patients were subjected to ICD implantation.
Conclusions
In our experience we may consider that WCD use is effective, safe and with a good adherence in all patients, considering wearing time. The WCD allows saving resources with less hospitalization time.
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Affiliation(s)
- M Bolognesi
- OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE CIVILE, CASTEL SAN GIOVANNI; OSPEDALE GUGLIELMO DI SALICETO, PIACENZA
| | - L Rossi
- OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE CIVILE, CASTEL SAN GIOVANNI; OSPEDALE GUGLIELMO DI SALICETO, PIACENZA
| | - A Biagi
- OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE CIVILE, CASTEL SAN GIOVANNI; OSPEDALE GUGLIELMO DI SALICETO, PIACENZA
| | - M Coccia
- OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE CIVILE, CASTEL SAN GIOVANNI; OSPEDALE GUGLIELMO DI SALICETO, PIACENZA
| | - C Sticozzi
- OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE CIVILE, CASTEL SAN GIOVANNI; OSPEDALE GUGLIELMO DI SALICETO, PIACENZA
| | - G Comastri
- OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE CIVILE, CASTEL SAN GIOVANNI; OSPEDALE GUGLIELMO DI SALICETO, PIACENZA
| | - D Aschieri
- OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE CIVILE, CASTEL SAN GIOVANNI; OSPEDALE GUGLIELMO DI SALICETO, PIACENZA
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3
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Bolognesi M, Iconomu E, Armentano C, Turchio P, Petrini M, Moderato L, Michieletti E, Aschieri D. P303 A CASE OF MYOPERICARDITIS AFTER II DOSE COVID 19 MRNA VACCINE IN YOUNG MALE. Eur Heart J Suppl 2022. [PMCID: PMC9383961 DOI: 10.1093/eurheartj/suac012.291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
COVID 19 disease caused devasting health consequences from March 2020. The development of effective vaccines against SARs COV 2 is an important weapon to defeat this virus. However rare cases of vaccines complications have been reported including myopericarditis above all in young males that we have to follow strictly and to begin right therapy as soon as possible. Data regarding specific therapy about mypericarditis after COVid 19 vaccine are scanty. We report a case of 16 years old male with no health problems, admitted in emergency department with chest pain relieved by sitting posistion and persistent fever rised 24 h after receiving his second dose of mRNA COVID 19 vaccineA 12 lead ECG showed normal sinusal rhythm without ST changes. On admission the complete blood cells count was normal, PCR was high: 5,92 mg/dl and troponin I at high sensivity was elevated: 9249 ml/L. The patient was hospitalized in our cardiology department with suspected myopericarditis. Ecocardiography TT showed normal left ventricular ejection fraction and no pericardial effusion. We began immediately non steroidal anti inflammatory therapy at high dose (ibuprofen 600 mg x 3/die and colchicine 1 mg/die) with conseguently reduction of chest painfuls symptoms. We also began ACEi therapy. On the advice of of the infectious disease specialist we added in the 5 th day methilprednisolone 25 mg/die in consideration of an excessive acute inflammatory response and we observed a clinical improvement with an indices of inflammation reduction. Cardiac magnetic resonance (CMR) performed after 3 day in T2 weighted images showed intramyocardial and subepicardial hyperintensity localized to the mid and apical lateral, basal infero lateral, distal anterior segment, as myocardial edema. Furthermore after Injection of contrast: subepicardial late gadolinium enhancement in the same segment. Minimum (4 mm) pericardial effusion. The clinical setting was attributable as symptoms, elevated troponin above upper limit of normal, in absence of other identifiable cause of symptoms and findings, to confirmed case of acute myocarditis after vaccine in according to the “CDC case definitions”. Myocarditis after mRNA COVID 19 vaccination affect above all young males with mild and multifocal forms with risks and benefits in favour of vaccines. However we need to identify them for an early therapy. In these setting of myocarditis an early use of corticosteroids can be provided.
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Affiliation(s)
| | - E Iconomu
- OSPEDALE GUGLIELMO DI SALICETO, PIACENZA
| | | | - P Turchio
- OSPEDALE GUGLIELMO DI SALICETO, PIACENZA
| | - M Petrini
- OSPEDALE GUGLIELMO DI SALICETO, PIACENZA
| | - L Moderato
- OSPEDALE GUGLIELMO DI SALICETO, PIACENZA
| | | | - D Aschieri
- OSPEDALE GUGLIELMO DI SALICETO, PIACENZA
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4
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Bolognesi M, Rossi L, Biagi A, Coccia M, Sticozzi C, Comastri G, Aschieri D. C7 WEARABLE CARDIOVERTER – DEFIBRILLATOR IN PATIENTS WITH HIGH RISK OF SUDDEN CARDIAC DEATH: IS IT USEFUL A PATIENT SELECTION? Eur Heart J Suppl 2022. [DOI: 10.1093/eurheartj/suac011.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Background
The wearable cardioverter defibrillator (WCD) is considered in patients with increased risk of sudden cardiac death (SDC), in which implanted cardiac defibrillator (ICD) is temporary not definitively indicated. A few registry confirmed efficacy and safety of WCD and left ventricular ejection fraction recovery (LEVS)after wearing time.
Methods
We considered in our study 40 consecutively patients that used WCD in Piacenza and Castel San Giovanni Cardiology Department from August 2017 to September 2021 with recent acute myocardial infarction, newly diagnosed cardiomyopathy, primary arrhythmias syndrome awaiting diagnostic completation. They were followed by remore monitoring. The primary outcome were: the need of ICD implantation or not indication to ICD at the of the wearing time, We analyzed clinical variables related to primary outcome.
Results
Out of 40 patients, average age 66 years, average LEVS media 29%±12,5,88% were males, 32% suffered from diabetes mellitus, 35% renal failure, 55% acute and chronic heart failure, 10% previous ischemic stroke, 17% atrial fibrillation (AF), 12% cardiac arrest (ACC) after STEMI onset, 20% ventricular tachicardia (VT). 27% of these patients took amiodarone,92% beta blockers and 82% ACEi.The average wearing time of WCD was 51 days and 22,96 hours dailyAt the end of this period 48% of patients didn‘t receive ICD implantation for increasing LEVS.We evaluated clinical variables related to primary outcome with Chi Square test and Student’s t test.There weren’t significant difference regarding primary outcome between ischemic disease and other cardiophaties. The presence of AF, previous stroke, renal failure, hypertension, diabetes mellitus was more but not significant in ICD group. No significant age difference(66.8±14.1 vs 66.3±11.8, p = 0,6) neither FEVS (29.4±11.6 vs 29.5±12.7, p = 0,8) was in patients that received ICD versus not received .The clinical variables related to primary outcome only were: ACC after STEMI onset and amiodarone therapy.
Conclusions
In our study of patients with WCD, the percentage of LEVS increase is consistent with European registries. A few clinical variables may be related to ICD indication. Further studies can be useful to identify patients who need more of WCD for a lack of LEVS improvement.
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Affiliation(s)
- M Bolognesi
- OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE CIVILE DI CASTEL SAN GIOVANNI, CASTEL SAN GIOVANNI
| | - L Rossi
- OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE CIVILE DI CASTEL SAN GIOVANNI, CASTEL SAN GIOVANNI
| | - A Biagi
- OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE CIVILE DI CASTEL SAN GIOVANNI, CASTEL SAN GIOVANNI
| | - M Coccia
- OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE CIVILE DI CASTEL SAN GIOVANNI, CASTEL SAN GIOVANNI
| | - C Sticozzi
- OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE CIVILE DI CASTEL SAN GIOVANNI, CASTEL SAN GIOVANNI
| | - G Comastri
- OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE CIVILE DI CASTEL SAN GIOVANNI, CASTEL SAN GIOVANNI
| | - D Aschieri
- OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE GUGLIELMO DI SALICETO, PIACENZA; OSPEDALE CIVILE DI CASTEL SAN GIOVANNI, CASTEL SAN GIOVANNI
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5
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Moschetto S, Ienco A, Manca G, Serrano-Ruiz M, Peruzzini M, Mezzi A, Brucale M, Bolognesi M, Toffanin S. Easy and fast in situ functionalization of exfoliated 2D black phosphorus with gold nanoparticles. Dalton Trans 2021; 50:11610-11618. [PMID: 34355729 PMCID: PMC8383289 DOI: 10.1039/d1dt02123k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 07/30/2021] [Indexed: 11/21/2022]
Abstract
Heterostructures of single- and few-layer black phosphorus (2D bP) functionalized with gold nanoparticles (Au NPs) have been recently reported in the literature, exploiting their intriguing properties and biocompatibility for catalytic, therapeutical and diagnostic applications. However, a deeper insight on the structural and electronic properties at the interface of the 2D bP/Au NP heterostructure is still lacking. In this work, 2D bP is functionalized with Au nanoparticles (NPs) through in situ deposition-precipitation heterogeneous reaction. The smallest realized Au NPs have a diameter around 10 nm as revealed by atomic-force and scanning electron microscopy, and are partially positively charged as revealed by X-ray Photoelectron Spectroscopy (XPS). XPS, UV-vis and Raman spectroscopy, supported by density functional theory (DFT) calculations, confirmed that while the structural and electronic properties of 2D bP are overall preserved, a soft-pairing between P atoms at the surface of 2D bP and Au atoms at the surface of Au NPs occurs, leading to a partial charge transfer at the 2D bP/Au interface, with a positive charge being localized on the Au atoms directly bonded to 2D bP. DFT calculations also predicted a band gap lowering, by 0.8 eV, for phosphorene functionalized with a tetranuclear Au cluster. Larger effects are expected as the Au cluster nuclearity (and coverage) increases.
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Affiliation(s)
- Salvatore Moschetto
- National Research Council – Institute for the Study of Nanostructured Materials (CNR-ISMN)Via P. Gobetti10140129 BolognaItaly
| | - Andrea Ienco
- National Research Council – Institute for the Chemistry of OrganoMetallic Compounds (CNR-ICCOM)Via Madonna del Piano 1050019 Sesto FiorentinoItaly
| | - Gabriele Manca
- National Research Council – Institute for the Chemistry of OrganoMetallic Compounds (CNR-ICCOM)Via Madonna del Piano 1050019 Sesto FiorentinoItaly
| | - Manuel Serrano-Ruiz
- National Research Council – Institute for the Chemistry of OrganoMetallic Compounds (CNR-ICCOM)Via Madonna del Piano 1050019 Sesto FiorentinoItaly
| | - Maurizio Peruzzini
- National Research Council – Institute for the Chemistry of OrganoMetallic Compounds (CNR-ICCOM)Via Madonna del Piano 1050019 Sesto FiorentinoItaly
| | - Alessio Mezzi
- National Research Council - Institute for the Study of Nanostructured Materials (CNR-ISMN)Via salaria km 29.300015 Monterotondo Stazione (Rome)Italy
| | - Marco Brucale
- National Research Council – Institute for the Study of Nanostructured Materials (CNR-ISMN)Via P. Gobetti10140129 BolognaItaly
| | - Margherita Bolognesi
- National Research Council – Institute for the Study of Nanostructured Materials (CNR-ISMN)Via P. Gobetti10140129 BolognaItaly
| | - Stefano Toffanin
- National Research Council – Institute for the Study of Nanostructured Materials (CNR-ISMN)Via P. Gobetti10140129 BolognaItaly
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6
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Moschetto S, Bolognesi M, Prescimone F, Brucale M, Mezzi A, Ortolani L, Caporali M, Pingue P, Serrano-Ruiz M, Pisignano D, Peruzzini M, Persano L, Toffanin S. Large-Area Oxidized Phosphorene Nanoflakes Obtained by Electrospray for Energy-Harvesting Applications. ACS Appl Nano Mater 2021; 4:3476-3485. [PMID: 35874274 PMCID: PMC9301623 DOI: 10.1021/acsanm.0c03465] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Bidimensional (2D) materials are nowadays being developed as outstanding candidates for electronic and optoelectronic components and devices. Targeted applications include sensing, energy conversion, and storage. Phosphorene is one of the most promising systems in this context, but its high reactivity under atmospheric conditions and its small-area/lab-scale deposition techniques have hampered the introduction of this material in real-world applications so far. However, phosphorene oxides in the form of low-dimensional structures (2D PO x ) should behave as an electroresponsive material according to recent theoretical studies. In the present work, we introduce electrospraying for the deposition of stoichiometric and large-area 2D PO x nanoflakes starting from a suspension of liquid-phase-exfoliated phosphorene. We obtained 2D PO x nanostructures with a mean surface area two orders of magnitude larger than phosphorene structures obtained with standard mechanical and liquid exfoliation techniques. X-ray spectroscopy and high-resolution electron microscopy confirmed the P2O5-like crystallographic structure of the electrosprayed flakes. Finally, we experimentally demonstrated for the first time the electromechanical responsivity of the 2D P2O5 nanoflakes, through piezoresponse force microscopy (PFM). This work sheds light on the possible implementation of phosphorus oxide-based 2D nanomaterials in the value chain of fabrication and engineering of devices, which might be easily scaled up for energy-harvesting/conversion applications.
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Affiliation(s)
- Salvatore Moschetto
- Istituto
per lo Studio dei Materiali Nanostrutturati (ISMN)—Consiglio
Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy
| | - Margherita Bolognesi
- Istituto
per lo Studio dei Materiali Nanostrutturati (ISMN)—Consiglio
Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy
| | - Federico Prescimone
- Istituto
per lo Studio dei Materiali Nanostrutturati (ISMN)—Consiglio
Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy
| | - Marco Brucale
- Istituto
per lo Studio dei Materiali Nanostrutturati (ISMN)—Consiglio
Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy
| | - Alessio Mezzi
- Istituto
per lo Studio dei Materiali Nanostrutturati (ISMN)—Consiglio
Nazionale delle Ricerche (CNR), P.O.
Box 10, Monterotondo Scalo, I-00016 Rome, Italy
| | - Luca Ortolani
- Istituto
per la microelettronica e microsistemi (IMM)—Consiglio Nazionale
delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy
| | - Maria Caporali
- Istituto
di Chimica dei Composti Organometallici (ICCOM)—Consiglio Nazionale
delle Ricerche (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy
| | - Pasqualantonio Pingue
- Laboratorio
NEST, Scuola Normale Superiore and Istituto
Nanoscienze—Consiglio Nazionale delle Ricerche (CNR), Piazza San Silvestro 12, I-56127 Pisa, Italy
| | - Manuel Serrano-Ruiz
- Istituto
di Chimica dei Composti Organometallici (ICCOM)—Consiglio Nazionale
delle Ricerche (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy
| | - Dario Pisignano
- Laboratorio
NEST, Scuola Normale Superiore and Istituto
Nanoscienze—Consiglio Nazionale delle Ricerche (CNR), Piazza San Silvestro 12, I-56127 Pisa, Italy
- Dipartimento
di Fisica, Università di Pisa, Largo B. Pontecorvo 3, I-56127 Pisa, Italy
| | - Maurizio Peruzzini
- Istituto
di Chimica dei Composti Organometallici (ICCOM)—Consiglio Nazionale
delle Ricerche (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy
| | - Luana Persano
- Laboratorio
NEST, Scuola Normale Superiore and Istituto
Nanoscienze—Consiglio Nazionale delle Ricerche (CNR), Piazza San Silvestro 12, I-56127 Pisa, Italy
| | - Stefano Toffanin
- Istituto
per lo Studio dei Materiali Nanostrutturati (ISMN)—Consiglio
Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy
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7
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Prosa M, Bolognesi M, Fornasari L, Grasso G, Lopez-Sanchez L, Marabelli F, Toffanin S. Nanostructured Organic/Hybrid Materials and Components in Miniaturized Optical and Chemical Sensors. Nanomaterials (Basel) 2020; 10:E480. [PMID: 32155993 PMCID: PMC7153587 DOI: 10.3390/nano10030480] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 02/28/2020] [Accepted: 03/04/2020] [Indexed: 01/16/2023]
Abstract
In the last decade, biochemical sensors have brought a disruptive breakthrough in analytical chemistry and microbiology due the advent of technologically advanced systems conceived to respond to specific applications. From the design of a multitude of different detection modalities, several classes of sensor have been developed over the years. However, to date they have been hardly used in point-of-care or in-field applications, where cost and portability are of primary concern. In the present review we report on the use of nanostructured organic and hybrid compounds in optoelectronic, electrochemical and plasmonic components as constituting elements of miniaturized and easy-to-integrate biochemical sensors. We show how the targeted design, synthesis and nanostructuring of organic and hybrid materials have enabled enormous progress not only in terms of modulation and optimization of the sensor capabilities and performance when used as active materials, but also in the architecture of the detection schemes when used as structural/packing components. With a particular focus on optoelectronic, chemical and plasmonic components for sensing, we highlight that the new concept of having highly-integrated architectures through a system-engineering approach may enable the full expression of the potential of the sensing systems in real-setting applications in terms of fast-response, high sensitivity and multiplexity at low-cost and ease of portability.
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Affiliation(s)
- Mario Prosa
- Institute of Nanostructured Materials (ISMN), National Research Council (CNR), via P. Gobetti 101, 40129 Bologna, Italy; (M.P.); (M.B.)
| | - Margherita Bolognesi
- Institute of Nanostructured Materials (ISMN), National Research Council (CNR), via P. Gobetti 101, 40129 Bologna, Italy; (M.P.); (M.B.)
| | - Lucia Fornasari
- Plasmore s.r.l., viale Vittorio Emanuele II 4, 27100 Pavia, Italy; (L.F.); (L.L.-S.)
| | - Gerardo Grasso
- Institute of Nanostructured Materials (ISMN), National Research Council (CNR) c/o Department of Chemistry, ‘Sapienza’ University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy;
| | - Laura Lopez-Sanchez
- Plasmore s.r.l., viale Vittorio Emanuele II 4, 27100 Pavia, Italy; (L.F.); (L.L.-S.)
| | - Franco Marabelli
- Physics Department, University of Pavia, via A. Bassi 6, 27100 Pavia, Italy;
| | - Stefano Toffanin
- Institute of Nanostructured Materials (ISMN), National Research Council (CNR), via P. Gobetti 101, 40129 Bologna, Italy; (M.P.); (M.B.)
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8
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Bolognesi M, Brucale M, Lorenzoni A, Prescimone F, Moschetto S, Korolkov VV, Baldoni M, Serrano-Ruiz M, Caporali M, Mercuri F, Besley E, Muccini M, Peruzzini M, Beton PH, Toffanin S. Epitaxial multilayers of alkanes on two-dimensional black phosphorus as passivating and electrically insulating nanostructures. Nanoscale 2019; 11:17252-17261. [PMID: 31317153 DOI: 10.1039/c9nr01155b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Mechanically exfoliated two-dimensional (2D) black phosphorus (bP) is epitaxially terminated by monolayers and multilayers of tetracosane, a linear alkane, to form a weakly interacting van der Waals heterostructure. Atomic force microscopy (AFM) and computational modelling show that epitaxial domains of alkane chains are ordered in parallel lamellae along the principal crystalline axis of bP, and this order is extended over a few layers above the interface. Epitaxial alkane multilayers delay the oxidation of 2D bP in air by 18 hours, in comparison to 1 hour for bare 2D bP, and act as an electrical insulator, as demonstrated using electrostatic force microscopy. The presented heterostructure is a technologically relevant insulator-semiconductor model system that can open the way to the use of 2D bP in micro- and nanoelectronic, optoelectronic and photonic applications.
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Affiliation(s)
- Margherita Bolognesi
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) - Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy.
| | - Marco Brucale
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) - Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy.
| | - Andrea Lorenzoni
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) - Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy.
| | - Federico Prescimone
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) - Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy.
| | - Salvatore Moschetto
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) - Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy.
| | - Vladimir V Korolkov
- School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, UK
| | - Matteo Baldoni
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) - Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy.
| | - Manuel Serrano-Ruiz
- Istituto di Chimica dei Composti Organometallici (ICCOM) - Consiglio Nazionale delle Ricerche (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy
| | - Maria Caporali
- Istituto di Chimica dei Composti Organometallici (ICCOM) - Consiglio Nazionale delle Ricerche (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy
| | - Francesco Mercuri
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) - Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy.
| | - Elena Besley
- School of Chemistry, University of Nottingham, Nottingham NG7 2RD, UK
| | - Michele Muccini
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) - Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy.
| | - Maurizio Peruzzini
- Istituto di Chimica dei Composti Organometallici (ICCOM) - Consiglio Nazionale delle Ricerche (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy
| | - Peter H Beton
- School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, UK
| | - Stefano Toffanin
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) - Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy.
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9
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Bolognesi M, Moschetto S, Trapani M, Prescimone F, Ferroni C, Manca G, Ienco A, Borsacchi S, Caporali M, Muccini M, Peruzzini M, Serrano-Ruiz M, Calucci L, Castriciano MA, Toffanin S. Noncovalent Functionalization of 2D Black Phosphorus with Fluorescent Boronic Derivatives of Pyrene for Probing and Modulating the Interaction with Molecular Oxygen. ACS Appl Mater Interfaces 2019; 11:22637-22647. [PMID: 31141339 PMCID: PMC6602408 DOI: 10.1021/acsami.9b04344] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
We studied the chemical-physical nature of interactions involved in the formation of adducts of two-dimensional black phosphorus (2D BP) with organoboron derivatives of a conjugated fluorescent molecule (pyrene). Time-resolved fluorescence spectroscopy showed a stabilization effect of 2D BP on all derivatives, in particular for the adducts endowed with the boronic functionalities. Also, a stronger modulation of the fluorescence decay with oxygen was registered for one of the adducts compared to the corresponding organoboron derivative alone. Nuclear magnetic resonance experiments in suspension and density functional theory simulations confirmed that only noncovalent interactions were involved in the formation of the adducts. The energetic gain in their formation arises from the interaction of P atoms with both C atoms of the pyrene core and the B atom of the boronic functionalities, with a stronger contribution from the ester with respect to the acid one. The interaction results in the lowering of the band gap of 2D BP by around 0.10 eV. Furthermore, we demonstrated through Raman spectroscopy an increased stability toward oxidation in air of 2D BP in the adducts in the solid state (more than 6 months). The modification of the electronic structure at the interface between 2D BP and a conjugated organic molecule through noncovalent stabilizing interactions mediated by the B atom is particularly appealing in view of creating heterojunctions for optoelectronic, photonic, and chemical sensing applications.
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Affiliation(s)
- Margherita Bolognesi
- Istituto
per lo Studio dei Materiali Nanostrutturati (ISMN)—Consiglio
Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy
| | - Salvatore Moschetto
- Istituto
per lo Studio dei Materiali Nanostrutturati (ISMN)—Consiglio
Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy
| | - Mariachiara Trapani
- Istituto
per lo Studio dei Materiali Nanostrutturati (ISMN)—Consiglio
Nazionale delle Ricerche (CNR), c/o Dipartimento di Scienze Chimiche,
Biologiche, Farmaceutiche e Ambientali, University of Messina, V.le F. Stagno d’Alcontres
31, 98166 Messina, Italy
| | - Federico Prescimone
- Istituto
per lo Studio dei Materiali Nanostrutturati (ISMN)—Consiglio
Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy
| | - Claudia Ferroni
- Istituto
per la Sintesi Organica e la Fotoreattività (ISOF)—Consiglio
Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy
| | - Gabriele Manca
- Istituto
di Chimica dei Composti Organometallici (ICCOM)—Consiglio Nazionale
delle Ricerche (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy
| | - Andrea Ienco
- Istituto
di Chimica dei Composti Organometallici (ICCOM)—Consiglio Nazionale
delle Ricerche (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy
| | - Silvia Borsacchi
- Istituto
di Chimica dei Composti Organometallici (ICCOM)—Consiglio Nazionale
delle Ricerche (CNR), via G. Moruzzi 1, 56124 Pisa, Italy
| | - Maria Caporali
- Istituto
di Chimica dei Composti Organometallici (ICCOM)—Consiglio Nazionale
delle Ricerche (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy
| | - Michele Muccini
- Istituto
per lo Studio dei Materiali Nanostrutturati (ISMN)—Consiglio
Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy
| | - Maurizio Peruzzini
- Istituto
di Chimica dei Composti Organometallici (ICCOM)—Consiglio Nazionale
delle Ricerche (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy
| | - Manuel Serrano-Ruiz
- Istituto
di Chimica dei Composti Organometallici (ICCOM)—Consiglio Nazionale
delle Ricerche (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy
| | - Lucia Calucci
- Istituto
di Chimica dei Composti Organometallici (ICCOM)—Consiglio Nazionale
delle Ricerche (CNR), via G. Moruzzi 1, 56124 Pisa, Italy
| | - Maria Angela Castriciano
- Istituto
per lo Studio dei Materiali Nanostrutturati (ISMN)—Consiglio
Nazionale delle Ricerche (CNR), c/o Dipartimento di Scienze Chimiche,
Biologiche, Farmaceutiche e Ambientali, University of Messina, V.le F. Stagno d’Alcontres
31, 98166 Messina, Italy
- E-mail: (M.A.C.)
| | - Stefano Toffanin
- Istituto
per lo Studio dei Materiali Nanostrutturati (ISMN)—Consiglio
Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy
- E-mail: (S.T.)
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10
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Peruzzini M, Bini R, Bolognesi M, Caporali M, Ceppatelli M, Cicogna F, Coiai S, Heun S, Ienco A, Benito II, Kumar A, Manca G, Passaglia E, Scelta D, Serrano‐Ruiz M, Telesio F, Toffanin S, Vanni M. A Perspective on Recent Advances in Phosphorene Functionalization and Its Applications in Devices. Eur J Inorg Chem 2019; 2019:1476-1494. [PMID: 31007576 PMCID: PMC6472490 DOI: 10.1002/ejic.201801219] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Indexed: 01/01/2023]
Abstract
Phosphorene, the 2D material derived from black phosphorus, has recently attracted a lot of interest for its properties, suitable for applications in materials science. The physical features and the prominent chemical reactivity on its surface render this nanolayered substrate particularly promising for electrical and optoelectronic applications. In addition, being a new potential ligand for metals, it opens the way for a new role of the inorganic chemistry in the 2D world, with special reference to the field of catalysis. The aim of this review is to summarize the state of the art in this subject and to present our most recent results in the preparation, functionalization, and use of phosphorene and its decorated derivatives. We discuss several key points, which are currently under investigation: the synthesis, the characterization by theoretical calculations, the high pressure behavior of black phosphorus, as well as its decoration with nanoparticles and encapsulation in polymers. Finally, device fabrication and electrical transport measurements are overviewed on the basis of recent literature and the new results collected in our laboratories.
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Affiliation(s)
- Maurizio Peruzzini
- Consiglio Nazionale delle Ricerche ‐ Istituto di Chimica dei Composti OrganometalliciVia Madonna del Piano 1050019Sesto Fiorentino, FlorenceItaly
| | - Roberto Bini
- Consiglio Nazionale delle Ricerche ‐ Istituto di Chimica dei Composti OrganometalliciVia Madonna del Piano 1050019Sesto Fiorentino, FlorenceItaly
- LENS ‐ European Laboratory for Non‐Linear SpectroscopyVia N. Carrara 1, I‐50019Sesto Fiorentino (FI)Italy
- Dipartimento di Chimica “Ugo SchiffUniversità degli Studi di FirenzeVia della Lastruccia 3, I‐50019Sesto Fiorentino (FI)Italy
| | - Margherita Bolognesi
- Consiglio Nazionale delle Ricerche ‐ Istituto per lo Studio dei Materiali NanostrutturatiVia Piero Gobetti, 10140129Bologna BOItaly
| | - Maria Caporali
- Consiglio Nazionale delle Ricerche ‐ Istituto di Chimica dei Composti OrganometalliciVia Madonna del Piano 1050019Sesto Fiorentino, FlorenceItaly
| | - Matteo Ceppatelli
- Consiglio Nazionale delle Ricerche ‐ Istituto di Chimica dei Composti OrganometalliciVia Madonna del Piano 1050019Sesto Fiorentino, FlorenceItaly
- LENS ‐ European Laboratory for Non‐Linear SpectroscopyVia N. Carrara 1, I‐50019Sesto Fiorentino (FI)Italy
| | - Francesca Cicogna
- Consiglio Nazionale delle Ricerche ‐ Istituto di Chimica dei Composti OrganometalliciSS PisaVia Moruzzi 156124PisaItaly
| | - Serena Coiai
- Consiglio Nazionale delle Ricerche ‐ Istituto di Chimica dei Composti OrganometalliciSS PisaVia Moruzzi 156124PisaItaly
| | - Stefan Heun
- NESTIstituto Nanoscienze‐CNR and Scuola Normale SuperiorePiazza San Silvestro 1256127PisaItaly
| | - Andrea Ienco
- Consiglio Nazionale delle Ricerche ‐ Istituto di Chimica dei Composti OrganometalliciVia Madonna del Piano 1050019Sesto Fiorentino, FlorenceItaly
| | - Iñigo Iglesias Benito
- Consiglio Nazionale delle Ricerche ‐ Istituto di Chimica dei Composti OrganometalliciVia Madonna del Piano 1050019Sesto Fiorentino, FlorenceItaly
- Dipartimento di Biotecnologie, Chimica e FarmaciaUniversità di Siena53100SienaItaly
| | - Abhishek Kumar
- NESTIstituto Nanoscienze‐CNR and Scuola Normale SuperiorePiazza San Silvestro 1256127PisaItaly
| | - Gabriele Manca
- Consiglio Nazionale delle Ricerche ‐ Istituto di Chimica dei Composti OrganometalliciVia Madonna del Piano 1050019Sesto Fiorentino, FlorenceItaly
| | - Elisa Passaglia
- Consiglio Nazionale delle Ricerche ‐ Istituto di Chimica dei Composti OrganometalliciSS PisaVia Moruzzi 156124PisaItaly
| | - Demetrio Scelta
- Consiglio Nazionale delle Ricerche ‐ Istituto di Chimica dei Composti OrganometalliciVia Madonna del Piano 1050019Sesto Fiorentino, FlorenceItaly
- LENS ‐ European Laboratory for Non‐Linear SpectroscopyVia N. Carrara 1, I‐50019Sesto Fiorentino (FI)Italy
| | - Manuel Serrano‐Ruiz
- Consiglio Nazionale delle Ricerche ‐ Istituto di Chimica dei Composti OrganometalliciVia Madonna del Piano 1050019Sesto Fiorentino, FlorenceItaly
| | - Francesca Telesio
- NESTIstituto Nanoscienze‐CNR and Scuola Normale SuperiorePiazza San Silvestro 1256127PisaItaly
| | - Stefano Toffanin
- Consiglio Nazionale delle Ricerche ‐ Istituto per lo Studio dei Materiali NanostrutturatiVia Piero Gobetti, 10140129Bologna BOItaly
| | - Matteo Vanni
- Consiglio Nazionale delle Ricerche ‐ Istituto di Chimica dei Composti OrganometalliciVia Madonna del Piano 1050019Sesto Fiorentino, FlorenceItaly
- Dipartimento di Biotecnologie, Chimica e FarmaciaUniversità di Siena53100SienaItaly
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11
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Bouzid H, Prosa M, Bolognesi M, Chehata N, Gedefaw D, Albonetti C, Andersson MR, Muccini M, Bouazizi A, Seri M. Impact of environmentally friendly processing solvents on the properties of blade‐coated polymer solar cells. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/pola.29286] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Hamza Bouzid
- Equipe Dispositifs Electroniques Organiques et Photovoltaïque Moléculaire, Laboratoire de la Matière Condensée et des Nanosciences, Faculté des Sciences de Monastir Université de Monastir Monastir 5019 Tunisia
| | - Mario Prosa
- Consiglio Nazionale delle Ricerche (CNR) Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) Via P. Gobetti 101 Bologna 40129 Italy
| | - Margherita Bolognesi
- Consiglio Nazionale delle Ricerche (CNR) Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) Via P. Gobetti 101 Bologna 40129 Italy
| | - Nadia Chehata
- Equipe Dispositifs Electroniques Organiques et Photovoltaïque Moléculaire, Laboratoire de la Matière Condensée et des Nanosciences, Faculté des Sciences de Monastir Université de Monastir Monastir 5019 Tunisia
| | - Desta Gedefaw
- School of Biological and Chemical Sciences The University of South Pacific Laucala Campus Suva Fiji
- Flinders Institute for Nanoscale Science and Technology Flinders University Sturt Road, Bedford Park Adelaide South Australia 5042 Australia
| | - Cristiano Albonetti
- Consiglio Nazionale delle Ricerche (CNR) Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) Via P. Gobetti 101 Bologna 40129 Italy
| | - Mats R. Andersson
- Flinders Institute for Nanoscale Science and Technology Flinders University Sturt Road, Bedford Park Adelaide South Australia 5042 Australia
| | - Michele Muccini
- Consiglio Nazionale delle Ricerche (CNR) Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) Via P. Gobetti 101 Bologna 40129 Italy
| | - Abdelaziz Bouazizi
- Equipe Dispositifs Electroniques Organiques et Photovoltaïque Moléculaire, Laboratoire de la Matière Condensée et des Nanosciences, Faculté des Sciences de Monastir Université de Monastir Monastir 5019 Tunisia
| | - Mirko Seri
- Consiglio Nazionale delle Ricerche (CNR) Istituto per la Sintesi Organica e la Fotoreattività (ISOF) Via P. Gobetti 101 Bologna 40129 Italy
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12
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Prosa M, Benvenuti E, Pasini M, Giovanella U, Bolognesi M, Meazza L, Galeotti F, Muccini M, Toffanin S. Organic Light-Emitting Transistors with Simultaneous Enhancement of Optical Power and External Quantum Efficiency via Conjugated Polar Polymer Interlayers. ACS Appl Mater Interfaces 2018; 10:25580-25588. [PMID: 29984985 DOI: 10.1021/acsami.8b06466] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Organic light-emitting transistors (OLETs) show the fascinating combination of electrical switching characteristics and light generation capability. However, to ensure an effective device operation, an efficient injection of charges into the emissive layer is required. The introduction of solution-processed conjugated polyelectrolyte (CPE) films at the emissive layer/electrode interface represents a promising strategy to improve the electron injection process by dipole formation. However, their use in optoelectronic devices also involves some limitations because of the ionic nature of CPEs. In this context, neutral conjugated polar polymers (CPPs) represent a valid alternative to CPEs because the conjugated backbones of CPPs are functionalized with polar nonionic side groups, thus avoiding ion-dependent drawbacks. By introducing a layer of polyfluorene-containing phosphonate groups underneath the metal electrodes, we here demonstrate a substantial improvement of the electron injection properties into the OLET-emissive layer and, accordingly, a more than 2-fold increased light power and a 5 times higher external quantum efficiency of p-type OLETs in comparison with reference devices without any interlayer. The great benefit of using a transparent glass substrate allowed to selectively investigate the morphological and photoluminescent characteristics of both CPE- and CPP-buried interlayers within complete OLETs by means of an optical scanning probe technique. This, together with a thorough optoelectronic characterization of the figures of merit of working light-emitting devices, allowed to disclose the origin of the improved optical performance of CPP-based devices as well as the operation mechanisms of the investigated interlayer in the corresponding OLETs.
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Affiliation(s)
- Mario Prosa
- Consiglio Nazionale delle Ricerche (CNR)-Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) , Via P. Gobetti 101 , 40129 Bologna , Italy
| | - Emilia Benvenuti
- Consiglio Nazionale delle Ricerche (CNR)-Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) , Via P. Gobetti 101 , 40129 Bologna , Italy
| | - Mariacecilia Pasini
- Consiglio Nazionale delle Ricerche (CNR)-Istituto per lo Studio delle Macromolecole (ISMac) , Via Bassini, 15 , 20133 Milano , Italy
| | - Umberto Giovanella
- Consiglio Nazionale delle Ricerche (CNR)-Istituto per lo Studio delle Macromolecole (ISMac) , Via Bassini, 15 , 20133 Milano , Italy
| | - Margherita Bolognesi
- Consiglio Nazionale delle Ricerche (CNR)-Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) , Via P. Gobetti 101 , 40129 Bologna , Italy
| | - Lorenzo Meazza
- Consiglio Nazionale delle Ricerche (CNR)-Istituto per lo Studio delle Macromolecole (ISMac) , Via Bassini, 15 , 20133 Milano , Italy
| | - Francesco Galeotti
- Consiglio Nazionale delle Ricerche (CNR)-Istituto per lo Studio delle Macromolecole (ISMac) , Via Bassini, 15 , 20133 Milano , Italy
| | - Michele Muccini
- Consiglio Nazionale delle Ricerche (CNR)-Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) , Via P. Gobetti 101 , 40129 Bologna , Italy
| | - Stefano Toffanin
- Consiglio Nazionale delle Ricerche (CNR)-Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) , Via P. Gobetti 101 , 40129 Bologna , Italy
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13
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Bolognesi M, Gedefaw D, Cavazzini M, Catellani M, Andersson MR, Muccini M, Kozma E, Seri M. Side chain modification on PDI-spirobifluorene-based molecular acceptors and its impact on organic solar cell performances. NEW J CHEM 2018. [DOI: 10.1039/c8nj04810j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N-Substitution in perylene diimide (PDI) n-type semiconductors is critical for their performance in organic bulk heterojunction solar cells.
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Affiliation(s)
- Margherita Bolognesi
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN)
- Consiglio Nazionale delle Ricerche (CNR)
- 40129 Bologna
- Italy
| | - Desta Gedefaw
- School of Biological and Chemical Sciences
- The University of South Pacific
- Laucala Campus
- Suva
- Fiji
| | - Marco Cavazzini
- Istituto di Scienze e Tecnologie Molecolari (ISTM)
- Consiglio Nazionale delle Ricerche (CNR)
- Dipartimento di Chimica Organica e Industriale
- Università degli Studi di Milano
- 20133 Milano
| | - Marinella Catellani
- Istituto per lo Studio delle Macromolecole (ISMAC)
- Consiglio Nazionale delle Ricerche (CNR)
- 20133 Milano
- Italy
| | - Mats R. Andersson
- Flinders Institute for NanoScale Science and Technology
- Flinders University
- Bedford Park
- Australia
| | - Michele Muccini
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN)
- Consiglio Nazionale delle Ricerche (CNR)
- 40129 Bologna
- Italy
| | - Erika Kozma
- Istituto per lo Studio delle Macromolecole (ISMAC)
- Consiglio Nazionale delle Ricerche (CNR)
- 20133 Milano
- Italy
| | - Mirko Seri
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF)
- Consiglio Nazionale delle Ricerche (CNR)
- 40129 Bologna
- Italy
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14
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Seri M, Gedefaw D, Prosa M, Tessarolo M, Bolognesi M, Muccini M, Andersson MR. A new quinoxaline and isoindigo based polymer as donor material for solar cells: Role of ecofriendly processing solvents on the device efficiency and stability. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28361] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Mirko Seri
- National Research Council (CNR), Institute of Organic Synthesis and Photoreactivity (ISOF); Via P. Gobetti, 101 Bologna 40129 Italy
| | - Desta Gedefaw
- Future Industries Institute, University of South Australia; Mawson Lakes South Australia 5095 Australia
| | - Mario Prosa
- National Research Council (CNR), Institute of Nanostructured Materials (ISMN); Via P. Gobetti, 101 Bologna 40129 Italy
| | - Marta Tessarolo
- National Research Council (CNR), Institute of Nanostructured Materials (ISMN); Via P. Gobetti, 101 Bologna 40129 Italy
| | | | - Michele Muccini
- National Research Council (CNR), Institute of Nanostructured Materials (ISMN); Via P. Gobetti, 101 Bologna 40129 Italy
| | - Mats R. Andersson
- Future Industries Institute, University of South Australia; Mawson Lakes South Australia 5095 Australia
- Department of Chemistry and Chemical Engineering; Polymer Technology, Chalmers University of Technology; Göteborg 412 96 Sweden
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15
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Gedefaw D, Tessarolo M, Bolognesi M, Prosa M, Kroon R, Zhuang W, Henriksson P, Bini K, Wang E, Muccini M, Seri M, Andersson MR. Synthesis and characterization of benzodithiophene and benzotriazole-based polymers for photovoltaic applications. Beilstein J Org Chem 2016; 12:1629-37. [PMID: 27559416 PMCID: PMC4979905 DOI: 10.3762/bjoc.12.160] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 07/15/2016] [Indexed: 11/24/2022] Open
Abstract
Two high bandgap benzodithiophene-benzotriazole-based polymers were synthesized via palladium-catalysed Stille coupling reaction. In order to compare the effect of the side chains on the opto-electronic and photovoltaic properties of the resulting polymers, the benzodithiophene monomers were substituted with either octylthienyl (PTzBDT-1) or dihexylthienyl (PTzBDT-2) as side groups, while the benzotriazole unit was maintained unaltered. The optical characterization, both in solution and thin-film, indicated that PTzBDT-1 has a red-shifted optical absorption compared to PTzBDT-2, likely due to a more planar conformation of the polymer backbone promoted by the lower content of alkyl side chains. The different aggregation in the solid state also affects the energetic properties of the polymers, resulting in a lower highest occupied molecular orbital (HOMO) for PTzBDT-1 with respect to PTzBDT-2. However, an unexpected behaviour is observed when the two polymers are used as a donor material, in combination with PC61BM as acceptor, in bulk heterojunction solar cells. Even though PTzBDT-1 showed favourable optical and electrochemical properties, the devices based on this polymer present a power conversion efficiency of 3.3%, considerably lower than the efficiency of 4.7% obtained for the analogous solar cells based on PTzBDT-2. The lower performance is presumably attributed to the limited solubility of the PTzBDT-1 in organic solvents resulting in enhanced aggregation and poor intermixing with the acceptor material in the active layer.
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Affiliation(s)
- Desta Gedefaw
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
- Department of Chemistry and Chemical Engineering, Polymer Technology, Chalmers University of Technology, Göteborg SE-412 96, Sweden
| | - Marta Tessarolo
- National Research Council (CNR) – Institute of Nanostructured Materials (ISMN), Via P. Gobetti, 101, 40129 Bologna, Italy
| | | | - Mario Prosa
- National Research Council (CNR) – Institute of Nanostructured Materials (ISMN), Via P. Gobetti, 101, 40129 Bologna, Italy
| | - Renee Kroon
- Department of Chemistry and Chemical Engineering, Polymer Technology, Chalmers University of Technology, Göteborg SE-412 96, Sweden
| | - Wenliu Zhuang
- Department of Chemistry and Chemical Engineering, Polymer Technology, Chalmers University of Technology, Göteborg SE-412 96, Sweden
| | - Patrik Henriksson
- Department of Chemistry and Chemical Engineering, Polymer Technology, Chalmers University of Technology, Göteborg SE-412 96, Sweden
| | - Kim Bini
- Department of Chemistry and Chemical Engineering, Polymer Technology, Chalmers University of Technology, Göteborg SE-412 96, Sweden
| | - Ergang Wang
- Department of Chemistry and Chemical Engineering, Polymer Technology, Chalmers University of Technology, Göteborg SE-412 96, Sweden
| | - Michele Muccini
- National Research Council (CNR) – Institute of Nanostructured Materials (ISMN), Via P. Gobetti, 101, 40129 Bologna, Italy
| | - Mirko Seri
- National Research Council (CNR) − Institute of Organic Synthesis and Photoreactivity (ISOF), Via P. Gobetti, 101, 40129 Bologna, Italy
| | - Mats R Andersson
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
- Department of Chemistry and Chemical Engineering, Polymer Technology, Chalmers University of Technology, Göteborg SE-412 96, Sweden
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Prosa M, Tessarolo M, Bolognesi M, Margeat O, Gedefaw D, Gaceur M, Videlot-Ackermann C, Andersson MR, Muccini M, Seri M, Ackermann J. Enhanced Ultraviolet Stability of Air-Processed Polymer Solar Cells by Al Doping of the ZnO Interlayer. ACS Appl Mater Interfaces 2016; 8:1635-43. [PMID: 26751271 DOI: 10.1021/acsami.5b08255] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Photostability of organic photovoltaic devices represents a key requirement for the commercialization of this technology. In this field, ZnO is one of the most attractive materials employed as an electron transport layer, and the investigation of its photostability is of particular interest. Indeed, oxygen is known to chemisorb on ZnO and can be released upon UV illumination. Therefore, a deep analysis of the UV/oxygen effects on working devices is relevant for the industrial production where the coating processes take place in air and oxygen/ZnO contact cannot be avoided. Here we investigate the light-soaking stability of inverted organic solar cells in which four different solution-processed ZnO-based nanoparticles were used as electron transport layers: (i) pristine ZnO, (ii) 0.03 at %, (iii) 0.37 at %, and (iv) 0.8 at % aluminum-doped AZO nanoparticles. The degradation of solar cells under prolonged illumination (40 h under 1 sun), in which the ZnO/AZO layers were processed in air or inert atmosphere, is studied. We demonstrate that the presence of oxygen during the ZnO/AZO processing is crucial for the photostability of the resulting solar cell. While devices based on undoped ZnO were particularly affected by degradation, we found that using AZO nanoparticles the losses in performance, due to the presence of oxygen, were partially or totally prevented depending on the Al doping level.
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Affiliation(s)
- Mario Prosa
- Consiglio Nazionale delle Ricerche (CNR) - Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) , Via P. Gobetti, 101, 40129 Bologna, Italy
| | - Marta Tessarolo
- Consiglio Nazionale delle Ricerche (CNR) - Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) , Via P. Gobetti, 101, 40129 Bologna, Italy
| | | | - Olivier Margeat
- Aix-Marseille Université, CNRS , CINaM UMR 7325, 13288 Marseille, France
| | - Desta Gedefaw
- Department of Chemistry and Chemical Engineering, Polymer Technology, Chalmers University of Technology , Goteborg SE-412 96, Sweden
- Ian Wark Research Institute, Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Meriem Gaceur
- Aix-Marseille Université, CNRS , CINaM UMR 7325, 13288 Marseille, France
| | | | - Mats R Andersson
- Department of Chemistry and Chemical Engineering, Polymer Technology, Chalmers University of Technology , Goteborg SE-412 96, Sweden
- Ian Wark Research Institute, Future Industries Institute, University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Michele Muccini
- Consiglio Nazionale delle Ricerche (CNR) - Istituto per lo Studio dei Materiali Nanostrutturati (ISMN) , Via P. Gobetti, 101, 40129 Bologna, Italy
| | - Mirko Seri
- Consiglio Nazionale delle Ricerche (CNR) - Istituto per la Sintesi Organica e la Fotoreattività (ISOF) , Via P. Gobetti, 101, 40129 Bologna, Italy
| | - Jörg Ackermann
- Aix-Marseille Université, CNRS , CINaM UMR 7325, 13288 Marseille, France
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Pesce P, Cecchetto L, Brocco S, Bolognesi M, Sodhi K, Abraham NG, Sacerdoti D. Characterization of a murine model of cardiorenal syndrome type 1 by high-resolution Doppler sonography. J Ultrasound 2014; 18:229-35. [PMID: 26261465 DOI: 10.1007/s40477-014-0129-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 08/14/2014] [Indexed: 12/25/2022] Open
Abstract
ABSTRACT Cardiorenal syndrome type 1 (CRS-1) is the acute kidney disfunction caused by an acute worsening of cardiac function. CRS-1 is the consequence of renal vasoconstriction secondary to renin-angiotensin system (RAS) activation. No animal models of CRS-1 are described in literature. PURPOSE To characterize a murine model of CRS-1 by using a high-resolution ultrasound echo-color Doppler system (VEVO2100). MATERIALS Post-ischemic heart failure was induced by coronary artery ligation (LAD) in seven CD1 mice. Fifteen and thirty days after surgery, mice underwent cardiac and renal echo-color Doppler. Serum creatinine and plasma renin activity were measured after killing. Animals were compared to seven CD1 control mice. RESULTS Heart failure with left ventricle dilatation (end diastolic area, p < 0.05 vs. controls) and significantly reduced ejection fraction (EF; p < 0.01 vs. controls) was evident 15 days after LAD. We measured a significant renal vasoconstriction in infarcted mice characterized by increased renal pulsatility index (PI; p < 0.05 vs. controls) associated to increased creatinine and renin levels (p < 0.05 vs. controls). CONCLUSIONS The mice model of LAD is a good model of CRS-1 evaluable by Doppler sonography and characterized by renal vasoconstriction due to the activation of the renin-angiotensin system secondary to heart failure.
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Affiliation(s)
- P Pesce
- Department of Medicine (DIMED), University of Padova, Padua, Italy
| | - L Cecchetto
- Department of Medicine (DIMED), University of Padova, Padua, Italy
| | - S Brocco
- Department of Medicine (DIMED), University of Padova, Padua, Italy
| | - M Bolognesi
- Department of Medicine (DIMED), University of Padova, Padua, Italy
| | - K Sodhi
- Department of Medicine, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755 USA
| | - N G Abraham
- Department of Medicine, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755 USA
| | - D Sacerdoti
- Department of Medicine (DIMED), University of Padova, Padua, Italy
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Prosa M, Sagnella A, Posati T, Tessarolo M, Bolognesi M, Cavallini S, Toffanin S, Benfenati V, Seri M, Ruani G, Muccini M, Zamboni R. Integration of a silk fibroin based film as a luminescent down-shifting layer in ITO-free organic solar cells. RSC Adv 2014. [DOI: 10.1039/c4ra08390c] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A bio-derived silk-fibroin film doped with a luminescent dye and its application as luminescent down-shifting layer in organic solar cells.
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Affiliation(s)
- Mario Prosa
- Consiglio Nazionale delle Ricerche (CNR) – Istituto per lo Studio dei Materiali Nanostrutturati (ISMN)
- Bologna, Italy
| | - Anna Sagnella
- Consiglio Nazionale delle Ricerche (CNR) – Istituto per la Sintesi Organica e la Fotoreattività (ISOF)
- Bologna, Italy
| | | | - Marta Tessarolo
- Consiglio Nazionale delle Ricerche (CNR) – Istituto per lo Studio dei Materiali Nanostrutturati (ISMN)
- Bologna, Italy
| | | | - Susanna Cavallini
- Consiglio Nazionale delle Ricerche (CNR) – Istituto per lo Studio dei Materiali Nanostrutturati (ISMN)
- Bologna, Italy
| | - Stefano Toffanin
- Consiglio Nazionale delle Ricerche (CNR) – Istituto per lo Studio dei Materiali Nanostrutturati (ISMN)
- Bologna, Italy
| | - Valentina Benfenati
- Consiglio Nazionale delle Ricerche (CNR) – Istituto per la Sintesi Organica e la Fotoreattività (ISOF)
- Bologna, Italy
| | - Mirko Seri
- Consiglio Nazionale delle Ricerche (CNR) – Istituto per la Sintesi Organica e la Fotoreattività (ISOF)
- Bologna, Italy
| | - Giampiero Ruani
- Consiglio Nazionale delle Ricerche (CNR) – Istituto per lo Studio dei Materiali Nanostrutturati (ISMN)
- Bologna, Italy
| | - Michele Muccini
- Consiglio Nazionale delle Ricerche (CNR) – Istituto per lo Studio dei Materiali Nanostrutturati (ISMN)
- Bologna, Italy
| | - Roberto Zamboni
- Consiglio Nazionale delle Ricerche (CNR) – Istituto per la Sintesi Organica e la Fotoreattività (ISOF)
- Bologna, Italy
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Gedefaw D, Tessarolo M, Zhuang W, Kroon R, Wang E, Bolognesi M, Seri M, Muccini M, Andersson MR. Conjugated polymers based on benzodithiophene and fluorinated quinoxaline for bulk heterojunction solar cells: thiophene versus thieno[3,2-b]thiophene as π-conjugated spacers. Polym Chem 2014. [DOI: 10.1039/c3py01519j] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Zhuang W, Bolognesi M, Seri M, Henriksson P, Gedefaw D, Kroon R, Jarvid M, Lundin A, Wang E, Muccini M, Andersson MR. Influence of Incorporating Different Electron-Rich Thiophene-Based Units on the Photovoltaic Properties of Isoindigo-Based Conjugated Polymers: An Experimental and DFT Study. Macromolecules 2013. [DOI: 10.1021/ma401691r] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Wenliu Zhuang
- Department
of Chemical and Biological Engineering, Polymer Technology, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | | | - Mirko Seri
- Istituto
per la Sintesi Organica e la Fotoreattività (ISOF), Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy
| | - Patrik Henriksson
- Department
of Chemical and Biological Engineering, Polymer Technology, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - Desta Gedefaw
- Department
of Chemical and Biological Engineering, Polymer Technology, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - Renee Kroon
- Department
of Chemical and Biological Engineering, Polymer Technology, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - Markus Jarvid
- Department
of Chemical and Biological Engineering, Polymer Technology, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - Angelica Lundin
- Department
of Chemical and Biological Engineering, Polymer Technology, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - Ergang Wang
- Department
of Chemical and Biological Engineering, Polymer Technology, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - Michele Muccini
- Istituto
per lo Studio dei Materiali Nanostrutturati (ISMN), Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti 101, 40129 Bologna, Italy
| | - Mats R. Andersson
- Department
of Chemical and Biological Engineering, Polymer Technology, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
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Seri M, Bolognesi M, Chen Z, Lu S, Koopman W, Facchetti A, Muccini M. Fine Structural Tuning of Cyanated Dithieno[3,2-b:2′,3′-d]silole–Oligothiophene Copolymers: Synthesis, Characterization, and Photovoltaic Response. Macromolecules 2013. [DOI: 10.1021/ma4011186] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mirko Seri
- Istituto per la Sintesi Organica
e la Fotoreattività (ISOF), Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti, 101, 40129 Bologna,
Italy
| | | | - Zhihua Chen
- Polyera Corporation, 8045 Lamon Avenue, Skokie, Illinois 60077, United States
| | - Shaofeng Lu
- Polyera Corporation, 8045 Lamon Avenue, Skokie, Illinois 60077, United States
| | - Wouter Koopman
- Istituto per lo Studio dei Materiali
Nanostrutturati (ISMN), Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti, 101, 40129 Bologna, Italy
| | - Antonio Facchetti
- Polyera Corporation, 8045 Lamon Avenue, Skokie, Illinois 60077, United States
| | - Michele Muccini
- Istituto per lo Studio dei Materiali
Nanostrutturati (ISMN), Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti, 101, 40129 Bologna, Italy
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Bolognesi M. Penile Mondor’s disease: a case report. Ital J Med 2013. [DOI: 10.4081/itjm.2008.4.37] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
CASE REPORT This article describes a case report with a review of the symptomatology diagnosis, and treatment of thrombophlebitis in the superficial dorsal vein of the penis. Penile Mondor’s disease is a benign condition, and after appropriate therapy, near complete recovery takes place within three weeks. DISCUSSION Thrombophlebitis of the superficial dorsal vein of the penis (Penile Mondor’s disease) is a rare, but important clinical diagnosis that any physician, and in particular general practitioners, should be able to recognize. Indeed, correct diagnosis and consequent reassurance can help to control the anxiety typically experienced by patients suffering from the disease.
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Femoni C, Muzzioli S, Palazzi A, Stagni S, Zacchini S, Monti F, Accorsi G, Bolognesi M, Armaroli N, Massi M, Valenti G, Marcaccio M. New tetrazole-based Cu(i) homo- and heteroleptic complexes with various P^P ligands: synthesis, characterization, redox and photophysical properties. Dalton Trans 2013; 42:997-1010. [DOI: 10.1039/c2dt32056h] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bolognesi M, Gedefaw D, Dang D, Henriksson P, Zhuang W, Tessarolo M, Wang E, Muccini M, Seri M, Andersson MR. 2D π-conjugated benzo[1,2-b:4,5-b′]dithiophene- and quinoxaline-based copolymers for photovoltaic applications. RSC Adv 2013. [DOI: 10.1039/c3ra44238a] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Abstract
OBJECTIVE Selenium neutralizes interleukin-1β (IL-1β) induced inflammatory responses in chondrocytes. We investigated potential mechanisms for this through in vitro knock down of three major selenoproteins, Iodothyronine Deiodinase-2 (DIO2), Glutathione Peroxidase-1 (GPX1), and Thioredoxin Reductase-1 (TR1) in primary human chondrocytes. METHODS Primary human chondrocytes were transfected with scrambled small interfering ribonucleic acid (siRNA) or siRNA specific for DIO2, GPX1 and TR1. After 48 h, transfected cells were cultured in serum free media for 48 h, with or without 10 pg/ml IL-1β for the final 24h. The efficiency of siRNAs was confirmed by quantitative Real Time-Polymerase Chain Reaction (qRT-PCR) and Western blot analysis. The gene expression, by qRT-PCR, of cyclooxygenase-2 (COX2), IL-1β, and Liver X receptor (LXR) alpha and beta was evaluated to determine the impact of selenoprotein knockdown on inflammatory responses in chondrocytes. RESULTS The messenger RNA (mRNA) expression of DIO2, GPX1, and TR1 was significantly decreased by the specific siRNAs (reduced 56%, P=0.0004; 96%, P<0.0001; and 66%, P<0.0001, respectively). Suppression of DIO2, but not GPX1 or TR1, significantly increased (~2-fold) both basal (P=0.0005) and IL-1β induced (P<0.0001) COX2 gene expression. Similarly, suppression of DIO2 significantly increased (∼9-fold) IL-1β induced IL-1β gene expression (P=0.0056) and resulted in a 32% (P=0.0044) decrease in LXRα gene expression but no effect on LXRβ. CONCLUSIONS Suppression of the selenoprotein DIO2 resulted in strong pro-inflammatory effects with increased expression of inflammatory mediators, IL-1β and COX2, and decreased expression of LXRα suggesting that this may be the upstream target through which the anti-inflammatory effects of DIO2 are mediated.
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Affiliation(s)
- A W M Cheng
- Department of Pathology, Duke University Medical Center, Durham, NC 27710, USA
| | - M Bolognesi
- Department of Surgery, Duke University Medical Center, Durham, NC 27710, USA
| | - V B Kraus
- Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA.
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Abbotto A, Seri M, Dangate MS, De Angelis F, Manfredi N, Mosconi E, Bolognesi M, Ruffo R, Salamone MM, Muccini M. A vinylene‐linked benzo[1,2‐
b
:4,5‐
b'
]dithiophene‐2,1,3‐benzothiadiazole low‐bandgap polymer. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26046] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Alessandro Abbotto
- Department of Materials Science, Milano‐Bicocca Solar Energy Research Center—MIB‐Solar, University of Milano‐Bicocca, Via Cozzi 53, Milano I‐20125, Italy
| | - Mirko Seri
- Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati (CNR‐ISMN), Via P. Gobetti101, Bologna I‐40129, Italy
| | - Milind S. Dangate
- Department of Materials Science, Milano‐Bicocca Solar Energy Research Center—MIB‐Solar, University of Milano‐Bicocca, Via Cozzi 53, Milano I‐20125, Italy
| | - Filippo De Angelis
- Consiglio Nazionale delle Ricerche, Istituto CNR di Scienze e Tecnologie Molecolari (CNR‐Italy), Via Elce di Sotto 8, Perugia I‐06213, Italy
| | - Norberto Manfredi
- Department of Materials Science, Milano‐Bicocca Solar Energy Research Center—MIB‐Solar, University of Milano‐Bicocca, Via Cozzi 53, Milano I‐20125, Italy
| | - Edoardo Mosconi
- Consiglio Nazionale delle Ricerche, Istituto CNR di Scienze e Tecnologie Molecolari (CNR‐Italy), Via Elce di Sotto 8, Perugia I‐06213, Italy
| | | | - Riccardo Ruffo
- Department of Materials Science, Milano‐Bicocca Solar Energy Research Center—MIB‐Solar, University of Milano‐Bicocca, Via Cozzi 53, Milano I‐20125, Italy
| | - Matteo M. Salamone
- Department of Materials Science, Milano‐Bicocca Solar Energy Research Center—MIB‐Solar, University of Milano‐Bicocca, Via Cozzi 53, Milano I‐20125, Italy
| | - Michele Muccini
- Department of Materials Science, Milano‐Bicocca Solar Energy Research Center—MIB‐Solar, University of Milano‐Bicocca, Via Cozzi 53, Milano I‐20125, Italy
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Bolognesi M, Sánchez-Díaz A, Ajuria J, Pacios R, Palomares E. The effect of selective contact electrodes on the interfacial charge recombination kinetics and device efficiency of organic polymer solar cells. Phys Chem Chem Phys 2011; 13:6105-9. [DOI: 10.1039/c0cp02879g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Armelao L, Bottaro G, Quici S, Scalera C, Cavazzini M, Accorsi G, Bolognesi M. White Luminescent Silica Layers: The Molecular Design Beneath. Chemphyschem 2010; 11:2499-502. [DOI: 10.1002/cphc.201000450] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Lecis D, Drago C, Manzoni L, Seneci P, Scolastico C, Mastrangelo E, Bolognesi M, Anichini A, Kashkar H, Walczak H, Delia D. Novel SMAC-mimetics synergistically stimulate melanoma cell death in combination with TRAIL and Bortezomib. Br J Cancer 2010; 102:1707-16. [PMID: 20461078 PMCID: PMC2883696 DOI: 10.1038/sj.bjc.6605687] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND XIAP (X-linked inhibitor of apoptosis protein) is an anti-apoptotic protein exerting its activity by binding and suppressing caspases. As XIAP is overexpressed in several tumours, in which it apparently contributes to chemoresistance, and because its activity in vivo is antagonised by second mitochondria-derived activator of caspase (SMAC)/direct inhibitor of apoptosis-binding protein with low pI, small molecules mimicking SMAC (so called SMAC-mimetics) can potentially overcome tumour resistance by promoting apoptosis. METHODS Three homodimeric compounds were synthesised tethering a monomeric SMAC-mimetic with different linkers and their affinity binding for the baculoviral inhibitor repeats domains of XIAP measured by fluorescent polarisation assay. The apoptotic activity of these molecules, alone or in combination with tumour necrosis factor-related apoptosis-inducing ligand (TRAIL) and/or Bortezomib, was tested in melanoma cell lines by MTT viability assays and western blot analysis of activated caspases. RESULTS We show that in melanoma cell lines, which are typically resistant to chemotherapeutic agents, XIAP knock-down sensitises cells to TRAIL treatment in vitro, also favouring the accumulation of cleaved caspase-8. We also describe a new series of 4-substituted azabicyclo[5.3.0]alkane monomeric and dimeric SMAC-mimetics that target various members of the IAP family and powerfully synergise at submicromolar concentrations with TRAIL in inducing cell death. Finally, we show that the simultaneous administration of newly developed SMAC-mimetics with Bortezomib potently triggers apoptosis in a melanoma cell line resistant to the combined effect of SMAC-mimetics and TRAIL. CONCLUSION Hence, the newly developed SMAC-mimetics effectively synergise with TRAIL and Bortezomib in inducing cell death. These findings warrant further preclinical studies in vivo to verify the anticancer effectiveness of the combination of these agents.
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Affiliation(s)
- D Lecis
- Department of Experimental Oncology, Fondazione IRCCS Istituto Nazionale Tumori, Via G Venezian 1, 20133 Milano, Italy
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Ma Q, Zheng Y, Armaroli N, Bolognesi M, Accorsi G. Synthesis and photoluminescence properties of asymmetrical europium(III) complexes involving carbazole, phenanthroline and bathophenanthroline units. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2009.02.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Accorsi G, Verri G, Bolognesi M, Armaroli N, Clementi C, Miliani C, Romani A. The exceptional near-infrared luminescence properties of cuprorivaite (Egyptian blue). Chem Commun (Camb) 2009:3392-4. [PMID: 19503881 DOI: 10.1039/b902563d] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cuprorivaite (CaCuSi(4)O(10), also known as Egyptian blue) exhibits an exceptionally high emission quantum efficiency in the near-infrared region (lambda(max) = 910 nm, Phi(EM) = 10.5%) and a long excited state lifetime (107 mus); these properties make it appealing for several applications in the fields of biomedical analysis, telecommunications and lasers.
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Affiliation(s)
- Gianluca Accorsi
- Molecular Photoscience Group, Istituto ISOF, Consiglio Nazionale delle Ricerche, 40129 Bologna, Italy.
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Rossi V, Bolognesi M, Giosuè S. Influence of Weather Conditions on Infection of Peach Fruit by Taphrina deformans. Phytopathology 2007; 97:1625-1633. [PMID: 18943723 DOI: 10.1094/phyto-97-12-1625] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
ABSTRACT The effect of environment on the infection of peach fruit by Taphrina deformans was investigated using orchard observations under natural conditions (in 2001 to 2004) or in trees managed in such a way to exclude rainfall. These conditions were then validated using pot-grown peach plants exposed to single infection events and independent orchard observations. Leaf curl incidence was related to rainfall, length of wet periods, and the temperature during wetness and during the incubation period, as well as to the developmental stage of flowers and fruit. Weather conditions before petal fall did not influence fruit infection. After petal fall, rainfall and the duration of the wet period triggered by rainfall played a key role in infection occurrence. The minimum rainfall required for infection was 12 mm, with at least 24 h of wetness interrupted by no more than 4 h. No infection occurred when temperature was >/=17 degrees C during the wet period or >19 degrees C during incubation. Disease symptoms appeared on fruit after approximately 3 weeks of incubation, which is equivalent to 240- to 290-degree-days (base 0 degrees C). The period for fruit infection was relatively short being from petal fall until air temperature remained greater than 16 degrees C. During this period, the incidence of fruit that developed symptoms was closely related to the number of favorable events and the total wetness duration during such events.
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Coutard B, Gorbalenya AE, Snijder EJ, Leontovich AM, Poupon A, De Lamballerie X, Charrel R, Gould EA, Gunther S, Norder H, Klempa B, Bourhy H, Rohayem J, L'hermite E, Nordlund P, Stuart DI, Owens RJ, Grimes JM, Tucker PA, Bolognesi M, Mattevi A, Coll M, Jones TA, Aqvist J, Unge T, Hilgenfeld R, Bricogne G, Neyts J, La Colla P, Puerstinger G, Gonzalez JP, Leroy E, Cambillau C, Romette JL, Canard B. The VIZIER project: preparedness against pathogenic RNA viruses. Antiviral Res 2007; 78:37-46. [PMID: 18083241 PMCID: PMC7114271 DOI: 10.1016/j.antiviral.2007.10.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2007] [Revised: 10/15/2007] [Accepted: 10/16/2007] [Indexed: 01/07/2023]
Abstract
Life-threatening RNA viruses emerge regularly, and often in an unpredictable manner. Yet, the very few drugs available against known RNA viruses have sometimes required decades of research for development. Can we generate preparedness for outbreaks of the, as yet, unknown viruses? The VIZIER (VIral enZymes InvolvEd in Replication) (http://www.vizier-europe.org/) project has been set-up to develop the scientific foundations for countering this challenge to society. VIZIER studies the most conserved viral enzymes (that of the replication machinery, or replicases) that constitute attractive targets for drug-design. The aim of VIZIER is to determine as many replicase crystal structures as possible from a carefully selected list of viruses in order to comprehensively cover the diversity of the RNA virus universe, and generate critical knowledge that could be efficiently utilized to jump-start research on any emerging RNA virus. VIZIER is a multidisciplinary project involving (i) bioinformatics to define functional domains, (ii) viral genomics to increase the number of characterized viral genomes and prepare defined targets, (iii) proteomics to express, purify, and characterize targets, (iv) structural biology to solve their crystal structures, and (v) pre-lead discovery to propose active scaffolds of antiviral molecules.
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Affiliation(s)
- B Coutard
- Architecture et Fonction des Macromolécules Biologiques, CNRS, and Universités d'Aix-Marseille I et II, UMR 6098, ESIL Case 925, 13288 Marseille Cedex 09, France
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Milani M, Mastrangelo E, Bollati M, Sorrentino G, Bolognesi M. MTases and helicases: a medium-throughput approach to viral protein structures. Acta Crystallogr A 2007. [DOI: 10.1107/s0108767307099424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Mastrangelo E, Milani M, Bollati M, Sorrentino G, Canard B, Svergun DI, Bolognesi M. Structure and activity of Kunjin virus NS3 helicase domain. Acta Crystallogr A 2007. [DOI: 10.1107/s0108767307093427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Abstract
Portal vein thrombosis (PVT) is a rare cause of portal hypertension. Its diagnosis has been facilitated by improvements in imaging techniques, in particular Doppler sonography. The prevalence is about 1% in the general population, but much higher rates are observed in patients with hepatic cirrhosis (7%, range 0.6-17%), particularly those who also have hepatocellular carcinoma (HCC) (35%). The most common causes of PVT are myeloproliferative disorders, deficiencies of anticoagulant proteins, prothrombotic gene mutations, cirrhosis with portal hypertension, and HCC. Its development often requires the presence of two or more risk factors (local and/or systemic), e.g., a genetically determined thrombophilic state plus an infectious episode or abdominal surgery. It is clinically useful to distinguish between cirrhotic and noncirrhotic forms. Portal vein thrombosis is also traditionally classified as acute or chronic, but this distinction is often difficult. Color Doppler ultrasound is the first-line imaging study for diagnosis of PVT; magnetic resonance angiography and CT angiography are valid alternatives. The main complications are ischemic intestinal necrosis (in acute PVT) and esophageal varices (in chronic cases); the natural history of the latter differs depending on whether or not the thrombosis is associated with cirrhosis. The treatment of choice for PVT has never been adequately investigated. It is currently based on the use of anticoagulants associated, in some cases, with thrombolytics, but experience with the latter agents is too limited to draw any definite conclusions. In chronic thrombosis (even forms associated with cirrhosis), anticoagulant therapy is recommended and possibly, beta-blockers as well. Naturally, treatment of the underlying pathology is essential.
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Affiliation(s)
- D Sacerdoti
- Department of Clinical and Experimental Medicine, Clinica Medica 5, University of Padova, Italy
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Abstract
ABSTRACT The dynamics of the inoculum of Taphrina deformans were studied during a 4-year period by (i) inspecting curled leaves for the presence of asci, (ii) placing deposition spore samplers within the tree canopies, and (iii) exposing potted peach plants (trap plants). These three approaches produced consistent results. Four main periods characterized the dynamics of the inoculum: the first period coincides with the parasitic stage of the pathogen's life cycle and the other periods with the saprophytic stage. Mid- to late spring (first period) was characterized by the presence of asci on infected leaves which produced and ejected large quantities of ascospores in 96% of the samplings. Rainfall was not necessary for ascospore dispersal, which was favored by air temperature <20 degrees C and relative humidity >/=80% or wetness duration >8 h. In summer and autumn (second period), blastospores were trapped in 54 and 24% of samplings, respectively, with low spore numbers. In the winter (third period), blasto-spores were trapped in the lowest numbers and in only 6% of samplings. In late winter to early spring (fourth period), blastospores were found in 56% of samples, with increasing numbers. Rainfall significantly influenced blastospore dispersal and temperature was correlated with the seasonality found during the saprophytic stage.
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P. Rossi G, Bolognesi M, Rizzoni D, Piva A, Porteri E, Bernante P, Pitter G, Agabiti-Rosei E, C. Pessina A. Vascular Remodelling and Duration of Hypertension Predicts Blood Pressure Response to Adrenalectomy in Aldosterone-Producing Adenoma Patients. High Blood Press Cardiovasc Prev 2007. [DOI: 10.2165/00151642-200714030-00183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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Bolognesi M, Nardini M, Pesce A, Guertin M. Structure of a group III truncated hemoglobin from Camphylobacter jejuni. Acta Crystallogr A 2006. [DOI: 10.1107/s0108767306096796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Rossi V, Bolognesi M, Languasco L, Giosuè S. Influence of Environmental Conditions on Infection of Peach Shoots by Taphrina deformans. Phytopathology 2006; 96:155-163. [PMID: 18943918 DOI: 10.1094/phyto-96-0155] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
ABSTRACT The effect of weather conditions on the infection of peach shoots by Taphrina deformans was investigated both under orchard conditions and in controlled-environment experiments. Leaf curl incidence and severity were related to rainfall, length of wet periods, and temperature during wetness and during the incubation period, as well as to the development stage of shoots. Surface wetness was more important than rainfall for infection to occur. Minimum rainfall for infection was 3 mm, with a wet period of at least 12.5 h; higher amounts of rainfall did not cause infection when the wet period they triggered was shorter. Wet periods initiated by dew or fog were too short for infection to occur. Infection occurred only when air temperature was <16 degrees C during the wet period and <19 degrees C during incubation. Logistic equations relating relative disease incidence and either duration of wetness or temperature were developed under controlled-environment conditions, with asymptotes at >/=48 h of wetness and </=8 degrees C for temperature, respectively. Rate of shoot and leaf development during the season influenced disease development, so that three different periods of susceptibility were defined, maximum susceptibility being between bud break and petal fall due to a low development rate of shoots.
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Bolognesi M, Sacerdoti D, Di Pascoli M, Angeli P, Quarta S, Sticca A, Pontisso P, Merkel C, Gatta A. Haeme oxygenase mediates hyporeactivity to phenylephrine in the mesenteric vessels of cirrhotic rats with ascites. Gut 2005; 54:1630-6. [PMID: 16227362 PMCID: PMC1774733 DOI: 10.1136/gut.2004.063735] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS Haeme oxygenase could play a role in the pathogenesis of arterial vasodilation in cirrhosis. The aim of this study was to verify the role of haeme oxygenase in the hyporesponsiveness to phenylephrine of small mesenteric arteries in rats with CCl(4) induced cirrhosis, with and without ascites. METHODS Pressurised small resistance mesenteric arteries were challenged with increasing doses of phenylephrine. Dose-response curves were evaluated under basal conditions, after inhibition of haeme oxygenase with chromium-mesoporphyrin, after inhibition of nitric oxide synthase (NOS) with N(G)-nitro-L-arginine-methyl-ester (L-NAME), and then after inhibition of both NOS and haeme oxygenase. Haeme oxygenase protein expression was also analysed. RESULTS Twenty six control rats and 35 rats with cirrhosis (17 with and 18 without ascites) were studied. Response to phenylephrine was lower in non-ascitic and ascitic cirrhosis than in controls. Chromium-mesoporphyrin increased the response to phenylephrine only in ascitic cirrhosis (p<0.001). L-NAME increased the response to phenylephrine in controls (p<0.001) and in ascitic and non-ascitic cirrhosis (p = 0.002, p<0.001, respectively) but the final response in non-ascitic cirrhosis was similar to that of control rats while it remained impaired in ascitic cirrhosis. Addition of chromium-mesoporphyrin to L-NAME improved the response to phenylephrine in ascitic cirrhosis (p<0.01), with final values not different from those of the other two groups. Protein expression of the inducible isoform of haeme oxygenase was increased in the mesenteric vessels of cirrhotic rats. CONCLUSION Haeme oxygenase mediates hyporeactivity to phenylephrine in the mesenteric vessels of experimental cirrhosis with ascites. NOS plays a major role only in the first stage of the disease.
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Affiliation(s)
- M Bolognesi
- Clinica Medica 5, Dipartimento di Medicina Clinica e Sperimentale, Policlinico Universitario, Via Giustiniani 2, 35128 Padova, Italy.
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Sacerdoti D, Colombrita C, Ghattas MH, Ismaeil EF, Scapagnini G, Bolognesi M, Li Volti G, Abraham NG. Heme oxygenase-1 transduction in endothelial cells causes downregulation of monocyte chemoattractant protein-1 and of genes involved in inflammation and growth. Cell Mol Biol (Noisy-le-grand) 2005; 51:363-70. [PMID: 16309586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2005] [Accepted: 06/29/2005] [Indexed: 05/05/2023]
Abstract
Heme oxygenase (HO-1) has been implicated as an anti-inflammatory gene. HO-1 overexpression, transiently and chronically, affects heme protein expression, attenuates TNF-mediated cell death, and decreases adhesion molecules. We assessed the effect of oxidant-mediated agents such as glucose and heme on 8-epi-isoprostane PGF2alpha (8-epi-PGF2alpha) and monocyte chemoattractant protein-1 (MCP-1). Glucose and heme increased both 8-epi-PGF2alpha and MCP-1. Overexpression of HO-1 decreased both 8-epi-PGF2alpha and MCP-1. To identify target genes involved in HO-1-mediated regulation of inflammation, a serial analysis of gene expression mRNA profile was performed in endothelial cells (EC) overexpressing the human HO-1 gene by transduction of a retrovirus carrying the HO-1 gene. Gene arrays (differential displays among 2400 genes) were used to identify known and novel differentially expressed genes. The levels of expression for several genes were confirmed by real time PCR in cells overexpressing the HO-1 gene. In HO-1 overexpressing cells, VEGF and the prostaglandin transporter were greatly increased while MCP-1 levels were decreased by 2.5-fold. The data from this study are relevant to understanding the mechanisms underlying the pathophysiological effects of HO-1 deficiency on endothelial cell injury and inflammation.
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Affiliation(s)
- D Sacerdoti
- Department of Clinical and Experimental Medicine, Clinica Medica 5, University of Padova, Via Giustiniani 2, 35100 Padova, Italy.
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Merkel C, Bolognesi M, Sacerdoti D, Bombonato G, Cavasin L, Gatta A. Disagreement between acute and chronic haemodynamic effects of nadolol in cirrhosis: a pathophysiological interpretation. Aliment Pharmacol Ther 2005; 22:433-9. [PMID: 16128681 DOI: 10.1111/j.1365-2036.2005.02585.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND The acute effects of beta-blockers may be different from chronic; mechanisms underlying this difference are poorly elucidated. AIM To assess portal pressure and its pathophysiological determinants after acute and chronic administration of nadolol. METHODS In 24 patients with cirrhosis and portal hypertension hepatic venous pressure gradient, portal blood flow and resistance to portal blood flow were measured before, 60-90 min after acute administration of nadolol, and after 1 month. Patients were good-responders if hepatic venous pressure gradient was < or =12 mmHg, or decreased by at least 20%. RESULTS Eleven and 13 patients were good- and poor-responders to acute administration, respectively. Acute poor-responders showed a lower decrease in portal blood flow (P = 0.04) and a less evident decrease in mean arterial pressure (P < 0.001). Eleven and 13 patients were good- and poor-responders to chronic administration, respectively. Chronic poor-responders showed a larger increase in resistance to portal blood flow compared with good-responders (P = 0.01). Disagreement between acute and chronic effects was seen in 12 patients: six were acute good-responders chronic poor-responders and six were acute poor-responders chronic good-responders. Acute good-responders chronic poor-responders patients had the smallest decreases in portal blood flow and in mean arterial pressure after acute administration, while acute poor-responders chronic good-responders showed the largest (P = 0.05 and 0.01). CONCLUSIONS Disagreement between acute and chronic effects of nadolol on hepatic venous pressure gradient is common. The mechanism responsible is complex, the acute effect being mainly modulated by arterial hypotension and the chronic effect by changes in portal resistance.
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Affiliation(s)
- C Merkel
- Department of Clinical and Experimental Medicine, University of Padua, Padua, Italy.
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Kitadokoro K, Ponassi M, Galli G, Petracca R, Falugi F, Grandi G, Bolognesi M. Structural studies of human CD81 extracellular domain. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305090173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Bordo D, Spallarossa A, Pagani S, Larson T, Bolognesi M. Structural studies on sulfurtransferase/phosphatase enzymes. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305091361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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46
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Bolognesi M, Nardini M. Structure and recognition in the BARS/CtBP-dependent transcription regulation. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305099988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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47
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Milani M, Leoni L, Rampioni G, Zennaro E, Ascenzi P, Bolognesi M. The 'active-like' structure of the unphosphorylated response regulator StyR. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305090069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Nardini M, Pesce A, Dewilde S, Moens L, Bolognesi M. Structural studies on Cerebratulus lacteusmini-Hb K(E10)W and L(G12)A mutants. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305090975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Abstract
The expression of nerve hemoglobins in invertebrates is a well-established fact, but this occurrence is uncommon. In the species where nerve globins occur, they probably function as an oxygen store for sustaining activity of the nerves during anoxic conditions. Although invertebrate nerve globins are functionally similar with respect to O2 affinity, they are by no means uniform in structure and can differ in size, cellular localization and heme-coordination. The best-studied nerve globin is the mini-globin of Cerebratulus lacteus, which belongs to a class of globins containing the polar TyrB10/GlnE7 pair in the distal pocket. The amide and phenol side chains normally cause low rates of O2 dissociation and ultra-high O2 affinity by forming strong hydrogen bonds with bound ligands. Cerebratulus hemoglobin, however, has a moderate O2 affinity, due to the presence of a third polar amino-acid in its active site, ThrE11, which inhibits hydrogen bonding to bound oxygen by the B10 tyrosine side chain.
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Affiliation(s)
- E Geuens
- Department of Biomedical Sciences, University of Antwerp, Belgium
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Bertozzi N, Bakken E, Bolognesi M, Castoldi F, Massarini M, Palazzi M, Pietrantoni L, Righi F, Vitali P. [Promoting physical activity in overweight and obese patients: counseling in primary care from Italy (Cesena, 2002--2003)]. Ann Ig 2004; 16:745-51. [PMID: 15697004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Lack of physical activity and obesity represent important public health problems. The objectives of the current study is to evaluate the effects of a counseling intervention (the PACE protocol) conducted by general practitioners and designed to motivate persons who are overweight or obese to increase their levels of physical activity. The counseling was offered 145 patients with a BMI > or =27 who were seen between May 2002 and April 2003 in the offices of 10 general practioners. The intervention, which lasted 3-5 minutes, was conducted during routine visits, based on the Prochaska-DiClemente model of behavioral change. Changes in the motivation of the patients to engage in physical activity and actual changes in levels of activity were measured, as were BMI and abdominal circumference. The median followup was 9 months. Among the 145 eligible patients, 103 (71%) agreed to particpate. Six months following the counselling, there was a significant change in both the motivational status and physical activity of the group, and they experienced significant decreases in BMI and abdominal circumference. Counseling using the PACE model appears to positively influence levels motivation and of physical activity in those patients who agreed to participate. Further studies should be conducted to evaluate the effectiveness of this strategy in other settings and the public health benefits of such counseling.
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Affiliation(s)
- N Bertozzi
- Dipartimento di Sanità Pubblica Azienda Sanitaria di Cesena.
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