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Possetto D, Pecnikaj I, Marzari G, Orlandi S, Sereno S, Cavazzini M, Pozzi G, Fungo F. Influence of Polyfluorinated Side Chains and Soft-Template Method on the Surface Morphologies and Hydrophobic Properties of Electrodeposited Films from Fluorene Bridged Dicarbazole Monomers. Chemphyschem 2023; 24:e202200371. [PMID: 36073234 PMCID: PMC10091753 DOI: 10.1002/cphc.202200371] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 09/07/2022] [Indexed: 01/20/2023]
Abstract
A clear case of relationship between the monomer molecular structure and the capability of tuning the morphology of electrodeposited gas bubbles template polymer thin films is shown. To this end, a series of fluorene-bridged dicarbazole derivatives containing either linear or terminally branched polyfluorinated side chains connected to the fluorene subunit were synthesized and their electrochemical properties were investigated. The new compounds underwent electrochemical polymerization over indium tin oxide electrodes to give hydrophobic films with nanostructural and morphological properties strongly dependent on the nature of the side chains. Gas bubbles templated electropolymerization was next achieved by the addition of tiny amounts of water to the monomer solutions, without using surfactants. Within the investigated set of molecules, the nanostructural properties of the soft-templated films obtained from monomers bearing linear side chains could be fine-tuned by adjusting electrochemical parameters, leading to superhydrophobic surfaces.
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Affiliation(s)
- David Possetto
- Instituto de Investigaciones en Tecnologías Energéticas y Materiales AvanzadosIITEMA-UNRC-CONICET) Departamento de QuímicaUniversidad Nacional de Río CuartoAgencia Postal 3X5804BYARío CuartoArgentina
| | - Ilir Pecnikaj
- University of Medicine TiranaDepartment of PharmacyRruga e Dibrës Nr. 371AL1005TiranëAlbania
| | - Gabriela Marzari
- Instituto de Investigaciones en Tecnologías Energéticas y Materiales AvanzadosIITEMA-UNRC-CONICET) Departamento de QuímicaUniversidad Nacional de Río CuartoAgencia Postal 3X5804BYARío CuartoArgentina
| | - Simonetta Orlandi
- CNR Institute of Chemical Sciences and Technologies “Giulio Natta” (CNR SCITEC)UOS Golgi, via Golgi 1920133MilanItaly
| | - Silvia Sereno
- Instituto de Investigaciones en Tecnologías Energéticas y Materiales AvanzadosIITEMA-UNRC-CONICET) Departamento de QuímicaUniversidad Nacional de Río CuartoAgencia Postal 3X5804BYARío CuartoArgentina
| | - Marco Cavazzini
- CNR Institute of Chemical Sciences and Technologies “Giulio Natta” (CNR SCITEC)UOS Golgi, via Golgi 1920133MilanItaly
| | - Gianluca Pozzi
- CNR Institute of Chemical Sciences and Technologies “Giulio Natta” (CNR SCITEC)UOS Golgi, via Golgi 1920133MilanItaly
| | - Fernando Fungo
- Instituto de Investigaciones en Tecnologías Energéticas y Materiales AvanzadosIITEMA-UNRC-CONICET) Departamento de QuímicaUniversidad Nacional de Río CuartoAgencia Postal 3X5804BYARío CuartoArgentina
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2
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Xia J, Zhang Y, Cavazzini M, Orlandi S, Ding B, Kanda H, Klipfel N, Gao X, Ul Ain Q, Jankauskas V, Rakstys K, Hu R, Qiu Z, Asiri AM, Kim H, Dyson PJ, Pozzi G, Khaja Nazeeruddin M. Asymmetrically Substituted 10
H
,10′
H
‐9,9′‐Spirobi[acridine] Derivatives as Hole‐Transporting Materials for Perovskite Solar Cells. Angew Chem Int Ed Engl 2022; 61:e202212891. [DOI: 10.1002/anie.202212891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Jianxing Xia
- Institute of Chemical Sciences and Engineering École Polytechnique Federale de Lausanne (EPFL) Lausanne 1015 Switzerland
| | - Yi Zhang
- Institute of Chemical Sciences and Engineering École Polytechnique Federale de Lausanne (EPFL) Lausanne 1015 Switzerland
| | - Marco Cavazzini
- CNR Institute of Chemical Sciences and Technologies “Giulio Natta” (CNR SCITEC), UOS Golgi via Golgi 19 20133 Milan Italy
| | - Simonetta Orlandi
- CNR Institute of Chemical Sciences and Technologies “Giulio Natta” (CNR SCITEC), UOS Golgi via Golgi 19 20133 Milan Italy
| | - Bin Ding
- Institute of Chemical Sciences and Engineering École Polytechnique Federale de Lausanne (EPFL) Lausanne 1015 Switzerland
| | - Hiroyuki Kanda
- Institute of Chemical Sciences and Engineering École Polytechnique Federale de Lausanne (EPFL) Lausanne 1015 Switzerland
| | - Nadja Klipfel
- Institute of Chemical Sciences and Engineering École Polytechnique Federale de Lausanne (EPFL) Lausanne 1015 Switzerland
| | - Xiao‐Xin Gao
- Institute of Chemical Sciences and Engineering École Polytechnique Federale de Lausanne (EPFL) Lausanne 1015 Switzerland
| | - Qurat Ul Ain
- Institute of Chemical Sciences and Engineering École Polytechnique Federale de Lausanne (EPFL) Lausanne 1015 Switzerland
| | - Vygintas Jankauskas
- Institute of Chemical Physics Vilnius University Sauletekio al. 3 Vilnius 10257 Lithuania
| | - Kasparas Rakstys
- Department of Organic Chemistry Kaunas University of Technology Radvilenu pl. 19 Kaunas 50254 Lithuania
| | - Ruiyuan Hu
- New Energy Technology Engineering Laboratory of Jiangsu Province School of Science Nanjing University of Posts and Telecommunications (NJUPT) Nanjing 210023 China
| | - Zeliang Qiu
- College of Materials and Chemistry and Chemical Engineering Chengdu University of Technology Chengdu Sichuan 610059 China
| | - Abdullah M. Asiri
- Center of Excellence for Advanced Materials Research (CEAMR) King Abdulaziz University P.O. Box 80203 21589 Jeddah Saudi Arabia
| | - Hobeom Kim
- Institute of Chemical Sciences and Engineering École Polytechnique Federale de Lausanne (EPFL) Lausanne 1015 Switzerland
- Present address: School of Materials Science and Engineering Gwangju Institute of Science and Technology (GIST) Gwangju 61005 Republic of Korea
| | - Paul J. Dyson
- Institute of Chemical Sciences and Engineering École Polytechnique Federale de Lausanne (EPFL) Lausanne 1015 Switzerland
| | - Gianluca Pozzi
- CNR Institute of Chemical Sciences and Technologies “Giulio Natta” (CNR SCITEC), UOS Golgi via Golgi 19 20133 Milan Italy
| | - Mohammad Khaja Nazeeruddin
- Institute of Chemical Sciences and Engineering École Polytechnique Federale de Lausanne (EPFL) Lausanne 1015 Switzerland
- Department of Materials Science and Engineering City University of Hong Kong, Kowloon Hong Kong
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3
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Xia J, Zhang Y, Cavazzini M, Orlandi S, Ding B, Kanda H, Klipfel N, Gao XX, Ain QU, Jankauskas V, Rakstys K, Hu R, Qiu Z, Asiri AM, Hobeom K, Pozzi G, Dyson PJ, Nazeeruddin MKK. Asymmetrically substituted 10H,10'H‐9,9'‐spirobi[acridine] derivatives as hole‐transporting materials for perovskite solar cells. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202212891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jianxing Xia
- EPFL: Ecole Polytechnique Federale de Lausanne Institute of Chemical Sciences and Engineering SWITZERLAND
| | - Yi Zhang
- EPFL: Ecole Polytechnique Federale de Lausanne Institute of Chemical Sciences and Engineering SWITZERLAND
| | - Marco Cavazzini
- CNR SCITEC CNR Institute of Chemical Sciences and Technologies "Giulio Natta" (CNR) ITALY
| | | | - Bin Ding
- EPFL: Ecole Polytechnique Federale de Lausanne Institute of Chemical Sciences and Engineering SWITZERLAND
| | - Hiroyuki Kanda
- EPFL: Ecole Polytechnique Federale de Lausanne Institute of Chemical Sciences and Engineering SWITZERLAND
| | - Nadja Klipfel
- EPFL: Ecole Polytechnique Federale de Lausanne Institute of Chemical Sciences and Engineering SWITZERLAND
| | - Xiao-Xin Gao
- EPFL: Ecole Polytechnique Federale de Lausanne Institute of Chemical Sciences and Engineering SWITZERLAND
| | - Qurat Ul Ain
- EPFL: Ecole Polytechnique Federale de Lausanne Institute of Chemical Sciences and Engineering SWITZERLAND
| | | | - Kasparas Rakstys
- Kaunas University of Technology: Kauno Technologijos Universitetas Department of Chemistry LITHUANIA
| | - Ruiyuan Hu
- Nanjing University of Information Science and Technology New Energy Technology Engineering Laboratory CHINA
| | - Zeliang Qiu
- Chengdu University College of Materials and Chemistry and Chemical Engineering CHINA
| | - Abdullah M. Asiri
- King Abdulaziz University Center of Excellence for Advanced Materials Research SAUDI ARABIA
| | - Kim Hobeom
- EPFL: Ecole Polytechnique Federale de Lausanne Institute of Chemical Sciences and Engineering SWITZERLAND
| | | | - Paul J. Dyson
- EPFL: Ecole Polytechnique Federale de Lausanne Institute of Chemical Sciences and Engineering SWITZERLAND
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4
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Rubini S, Zaghi S, Tazzari A, Lo Chiano F, Govoni G, Cavazzini M, Taddei R, Fontana MC, Barbieri S, Defilippo F. Scabies in wildlife animals, pets and humans: a re-emerging zoonosis? Eur J Public Health 2021. [DOI: 10.1093/eurpub/ckab165.623] [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] Open
Abstract
Abstract
Background
Scabies or sarcoptic mange is an infestation of the skin caused by the mite Sarcoptes scabiei. Transmission from animals to humans occurs through close contact. The most common symptoms are papules, erythema, excoriations, hyperkeratosis, and hypotrichosis. In the province of Ferrara (Emilia Romagna, Italy) mange is endemic in wild animals, mostly in foxes, which can act as vectors for domestic animals and humans.
Methods
From 2012 to 2020, 564 foxes were surveyed within the Wildlife Health Surveillance Re-gional Program, including microscopic examination in cases of skin lesions referable to scabies. In 2018, a domestic dog (10-year border collie, male), frequenting an uncultivated area colonized by foxes and located in the outskirts of Ferrara, showed scabby lesions mainly on the nose, around the eyes and on the back.
Results
11 out of 564 foxes resulted positive (1,95%), 6 cases out of 38 being in 2018 (15,8%). The parasite was detected by skin biopsy and direct microscopic examination in the domestic dog. The parasite was transmitted by the dog to the owner and the other two family members.
Conclusions
The increased density of dogs and foxes in the Ferrara province, and the attitude of foxes to live near to human settlements, increase the risk of contacts between foxes, domestic animals and humans, even though stray dogs are uncommon. This case illustrates the interdependencies between animal health, human health and environment, a synergy that can enable exacerbation of diseases of zoonotic origin as highlighted by the One Health concept. It is therefore important to increase the investigation on paths as well as vectors of diseases and to find collaborative, multi-sectorial and transversal approaches to ensure quality health outcomes. The control of the disease requires an appropriate monitoring of dogs' health being skin lesions in both, humans and animals, very similar to allergic dermatitis, which can delay the proper diagnosis of the disease.
Key messages
Sarcoptic mange is a zoonosis still present in Emilia Romagna, Italy. The One Health approach is key to control the cycle of the zoonotic sarcoptic mange.
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Affiliation(s)
- S Rubini
- Department Institute Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna, Ferrara, Italy
| | - S Zaghi
- Azienda USL Ferrara, Attività Veterinarie, Ferrara, Italy
| | - A Tazzari
- Veterinary freelance, Ferrara, Italy
| | - F Lo Chiano
- Department Institute Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna, Ferrara, Italy
| | - G Govoni
- International Committee of the Red Cross, ICRC, Nairobi, Kenya
| | | | - R Taddei
- Department Institute Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna, Bologna, Italy
| | - MC Fontana
- Department Institute Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna, Bologna, Italy
| | - S Barbieri
- Department of Urgency, Department University of Padova, Padua, Italy
| | - F Defilippo
- Department Institute Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna, Brescia, Italy
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5
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Minudri D, Orlandi S, Cavazzini M, Rossi S, Marzari G, Cavallo P, Fernandez L, Fungo F, Pozzi G. Electron Donor‐Acceptor Spirobi[cyclopenta[2,1‐
b
: 3,4‐
b′
]dithiophene] Derivatives as Precursors of Electrodeposited Regioregular Thiophene‐based Polymers. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Daniela Minudri
- IITEMA, UNRC-CONICET Departamento de Química Universidad Nacional de Río Cuarto Agencia Postal 3 X5804BYA Río Cuarto Argentina
| | - Simonetta Orlandi
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” (SCITEC) Consiglio Nazionale delle Ricerche (CNR) via C. Golgi 19 20133 Milano Italy
| | - Marco Cavazzini
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” (SCITEC) Consiglio Nazionale delle Ricerche (CNR) via C. Golgi 19 20133 Milano Italy
| | - Sergio Rossi
- Dipartimento di Chimica Università degli Studi di Milano via C. Golgi 19 20133 Milano Italy
| | - Gabriela Marzari
- IITEMA, UNRC-CONICET Departamento de Química Universidad Nacional de Río Cuarto Agencia Postal 3 X5804BYA Río Cuarto Argentina
| | - Pablo Cavallo
- IITEMA, UNRC-CONICET Departamento de Química Universidad Nacional de Río Cuarto Agencia Postal 3 X5804BYA Río Cuarto Argentina
| | - Luciana Fernandez
- IITEMA, UNRC-CONICET Departamento de Química Universidad Nacional de Río Cuarto Agencia Postal 3 X5804BYA Río Cuarto Argentina
| | - Fernando Fungo
- IITEMA, UNRC-CONICET Departamento de Química Universidad Nacional de Río Cuarto Agencia Postal 3 X5804BYA Río Cuarto Argentina
| | - Gianluca Pozzi
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” (SCITEC) Consiglio Nazionale delle Ricerche (CNR) via C. Golgi 19 20133 Milano Italy
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6
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Orlandi S, Cavazzini M, Capuani S, Ciardello A, Pozzi G. Synthesis and 19F NMR parameters of a perfluoro-tert-butoxy tagged L-DOPA analogue. J Fluor Chem 2020. [DOI: 10.1016/j.jfluchem.2020.109596] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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7
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Queloz VIE, Bouduban MEF, García‐Benito I, Fedorovskiy A, Orlandi S, Cavazzini M, Pozzi G, Trivedi H, Lupascu DC, Beljonne D, Moser J, Nazeeruddin MK, Quarti C, Grancini G. Spatial Charge Separation as the Origin of Anomalous Stark Effect in Fluorous 2D Hybrid Perovskites. Adv Funct Mater 2020; 30:2000228. [PMID: 32684906 PMCID: PMC7357595 DOI: 10.1002/adfm.202000228] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 03/30/2020] [Accepted: 04/15/2020] [Indexed: 05/29/2023]
Abstract
2D hybrid perovskites (2DP) are versatile materials, whose electronic and optical properties can be tuned through the nature of the organic cations (even when those are seemingly electronically inert). Here, it is demonstrated that fluorination of the organic ligands yields glassy 2DP materials featuring long-lived correlated electron-hole pairs. Such states have a marked charge-transfer character, as revealed by the persistent Stark effect in the form of a second derivative in electroabsorption. Modeling shows that electrostatic effects associated with fluorination, combined with the steric hindrance due to the bulky side groups, drive the formation of spatially dislocated charge pairs with reduced recombination rates. This work enriches and broadens the current knowledge of the photophysics of 2DP, which will hopefully guide synthesis efforts toward novel materials with improved functionalities.
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Affiliation(s)
- Valentin I. E. Queloz
- Group for Molecular Engineering of Functional MaterialsInstitute of Chemical Sciences and EngineeringEcole Polytéchnique Fédérale de LausanneSionCH‐1951Switzerland
| | - Marine E. F. Bouduban
- Photochemical Dynamics GroupInstitute of Chemical Sciences and Engineering and Lausanne Centre for Ultrafast Science (LACUS)École Polytéchnique Fédérale de LausanneLausanneCH‐1015Switzerland
| | - Ines García‐Benito
- Group for Molecular Engineering of Functional MaterialsInstitute of Chemical Sciences and EngineeringEcole Polytéchnique Fédérale de LausanneSionCH‐1951Switzerland
| | - Alexander Fedorovskiy
- Group for Molecular Engineering of Functional MaterialsInstitute of Chemical Sciences and EngineeringEcole Polytéchnique Fédérale de LausanneSionCH‐1951Switzerland
| | - Simonetta Orlandi
- Consiglio Nazionale delle RicercheIstituto di Scienze e Tecnologie Chimiche “Giulio Natta” (CNR‐SCITEC)Via Golgi 19MilanoI‐20133Italy
| | - Marco Cavazzini
- Consiglio Nazionale delle RicercheIstituto di Scienze e Tecnologie Chimiche “Giulio Natta” (CNR‐SCITEC)Via Golgi 19MilanoI‐20133Italy
| | - Gianluca Pozzi
- Consiglio Nazionale delle RicercheIstituto di Scienze e Tecnologie Chimiche “Giulio Natta” (CNR‐SCITEC)Via Golgi 19MilanoI‐20133Italy
| | - Harsh Trivedi
- Institute for Materials Science and Center for Nanointegration Duisburg‐Essen (CENIDE)University of Duisburg‐EssenEssen45141Germany
| | - Doru C. Lupascu
- Institute for Materials Science and Center for Nanointegration Duisburg‐Essen (CENIDE)University of Duisburg‐EssenEssen45141Germany
| | - David Beljonne
- Laboratory for Chemistry of Novel MaterialsUniversity of MonsPlace du Parc 20MonsB‐7000Belgium
| | - Jaques‐E Moser
- Photochemical Dynamics GroupInstitute of Chemical Sciences and Engineering and Lausanne Centre for Ultrafast Science (LACUS)École Polytéchnique Fédérale de LausanneLausanneCH‐1015Switzerland
| | - Mohammad Khaja Nazeeruddin
- Group for Molecular Engineering of Functional MaterialsInstitute of Chemical Sciences and EngineeringEcole Polytéchnique Fédérale de LausanneSionCH‐1951Switzerland
| | - Claudio Quarti
- Laboratory for Chemistry of Novel MaterialsUniversity of MonsPlace du Parc 20MonsB‐7000Belgium
- ENSCR, INSA Rennes, CNRSInstitut des Sciences Chimiques de Rennes (ISCR)University of RennesUMR 6226RennesF‐35000France
| | - Giulia Grancini
- Group for Molecular Engineering of Functional MaterialsInstitute of Chemical Sciences and EngineeringEcole Polytéchnique Fédérale de LausanneSionCH‐1951Switzerland
- Department of Chemistry and INSTMUniversity of PaviaVia Taramelli 14Pavia27100Italy
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8
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García-Benito I, Quarti C, Queloz VIE, Hofstetter YJ, Becker-Koch D, Caprioglio P, Neher D, Orlandi S, Cavazzini M, Pozzi G, Even J, Nazeeruddin MK, Vaynzof Y, Grancini G. Fluorination of Organic Spacer Impacts on the Structural and Optical Response of 2D Perovskites. Front Chem 2020; 7:946. [PMID: 32064245 PMCID: PMC6999157 DOI: 10.3389/fchem.2019.00946] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 11/08/2019] [Accepted: 12/31/2019] [Indexed: 11/13/2022] Open
Abstract
Low-dimensional hybrid perovskites have triggered significant research interest due to their intrinsically tunable optoelectronic properties and technologically relevant material stability. In particular, the role of the organic spacer on the inherent structural and optical features in two-dimensional (2D) perovskites is paramount for material optimization. To obtain a deeper understanding of the relationship between spacers and the corresponding 2D perovskite film properties, we explore the influence of the partial substitution of hydrogen atoms by fluorine in an alkylammonium organic cation, resulting in (Lc)2PbI4 and (Lf)2PbI4 2D perovskites, respectively. Consequently, optical analysis reveals a clear 0.2 eV blue-shift in the excitonic position at room temperature. This result can be mainly attributed to a band gap opening, with negligible effects on the exciton binding energy. According to Density Functional Theory (DFT) calculations, the band gap increases due to a larger distortion of the structure that decreases the atomic overlap of the wavefunctions and correspondingly bandwidth of the valence and conduction bands. In addition, fluorination impacts the structural rigidity of the 2D perovskite, resulting in a stable structure at room temperature and the absence of phase transitions at a low temperature, in contrast to the widely reported polymorphism in some non-fluorinated materials that exhibit such a phase transition. This indicates that a small perturbation in the material structure can strongly influence the overall structural stability and related phase transition of 2D perovskites, making them more robust to any phase change. This work provides key information on how the fluorine content in organic spacer influence the structural distortion of 2D perovskites and their optical properties which possess remarkable importance for future optoelectronic applications, for instance in the field of light-emitting devices or sensors.
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Affiliation(s)
- Inés García-Benito
- Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, EPFL Valais Wallis, Sion, Switzerland
| | - Claudio Quarti
- Laboratory for Chemistry of Novel Materials, Department of Chemistry, Université de Mons, Mons, Belgium.,Univ Rennes, ENSCR, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, Rennes, France
| | - Valentin I E Queloz
- Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, EPFL Valais Wallis, Sion, Switzerland
| | - Yvonne J Hofstetter
- Integrated Centre for Applied Physics and Photonic Materials and Centre for Advancing Electronics Dresden (CFAED), Technical University of Dresden, Dresden, Germany
| | - David Becker-Koch
- Integrated Centre for Applied Physics and Photonic Materials and Centre for Advancing Electronics Dresden (CFAED), Technical University of Dresden, Dresden, Germany
| | - Pietro Caprioglio
- Institute of Physics and Astronomy, University of Potsdam, Potsdam, Germany.,Young Investigator Group Perovskite Tandem Solar Cells, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Berlin, Germany
| | - Dieter Neher
- Institute of Physics and Astronomy, University of Potsdam, Potsdam, Germany
| | - Simonetta Orlandi
- CNR - Istituto di Scienze e Tecnologie Chimiche "G. Natta" (CNR-SCITEC), Milan, Italy
| | - Marco Cavazzini
- CNR - Istituto di Scienze e Tecnologie Chimiche "G. Natta" (CNR-SCITEC), Milan, Italy
| | - Gianluca Pozzi
- CNR - Istituto di Scienze e Tecnologie Chimiche "G. Natta" (CNR-SCITEC), Milan, Italy
| | - Jacky Even
- Univ Rennes, INSA Rennes, CNRS, Institut FOTON - UMR 6082, Rennes, France
| | - Mohammad Khaja Nazeeruddin
- Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, EPFL Valais Wallis, Sion, Switzerland
| | - Yana Vaynzof
- Integrated Centre for Applied Physics and Photonic Materials and Centre for Advancing Electronics Dresden (CFAED), Technical University of Dresden, Dresden, Germany
| | - Giulia Grancini
- Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, EPFL Valais Wallis, Sion, Switzerland.,Dipartimento di Chimica Fisica, University of Pavia, Pavia, Italy
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9
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Martinez Espinoza MI, Sori L, Pizzi A, Terraneo G, Moggio I, Arias E, Pozzi G, Orlandi S, Dichiarante V, Metrangolo P, Cavazzini M, Baldelli Bombelli F. BODIPY Dyes Bearing Multibranched Fluorinated Chains: Synthesis, Structural, and Spectroscopic Studies. Chemistry 2019; 25:9078-9087. [PMID: 31184410 DOI: 10.1002/chem.201901259] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 03/18/2019] [Revised: 05/02/2019] [Indexed: 01/28/2023]
Abstract
A small series of boron-dipyrromethene (BODIPY) dyes, characterized by the presence of multibranched fluorinated residues, were designed and synthesized. The dyes differ in both the position (para-perfluoroalkoxy-substituted phenyl ring or boron functionalization) and number of magnetically equivalent fluorine atoms (27 or 54 fluorine atoms per molecule). Photophysical and crystallographic characterization of the synthesized BODIPYs was carried out to evaluate the effect of the presence of highly fluorinated moieties on the optical and morphological properties of such compounds.
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Affiliation(s)
- Maria I Martinez Espinoza
- Laboratory of Supramolecular and Bio-Nanomaterials, (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, 20131, Milan, Italy
| | - Lorenzo Sori
- Laboratory of Supramolecular and Bio-Nanomaterials, (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, 20131, Milan, Italy
| | - Andrea Pizzi
- Laboratory of Supramolecular and Bio-Nanomaterials, (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, 20131, Milan, Italy
| | - Giancarlo Terraneo
- Laboratory of Supramolecular and Bio-Nanomaterials, (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, 20131, Milan, Italy
| | - Ivana Moggio
- Departamento de Materiales Avanzados, Centro de Investigación en Química Aplicada, 25294, Saltillo, México
| | - Eduardo Arias
- Departamento de Materiales Avanzados, Centro de Investigación en Química Aplicada, 25294, Saltillo, México
| | - Gianluca Pozzi
- Institute of Molecular Science and Technologies (ISTM), National Research Council (CNR), 20133, Milan, Italy
| | - Simonetta Orlandi
- Institute of Molecular Science and Technologies (ISTM), National Research Council (CNR), 20133, Milan, Italy
| | - Valentina Dichiarante
- Laboratory of Supramolecular and Bio-Nanomaterials, (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, 20131, Milan, Italy
| | - Pierangelo Metrangolo
- Laboratory of Supramolecular and Bio-Nanomaterials, (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, 20131, Milan, Italy
| | - Marco Cavazzini
- Institute of Molecular Science and Technologies (ISTM), National Research Council (CNR), 20133, Milan, Italy
| | - Francesca Baldelli Bombelli
- Laboratory of Supramolecular and Bio-Nanomaterials, (SupraBioNanoLab), Department of Chemistry, Materials, and Chemical Engineering "Giulio Natta", Politecnico di Milano, 20131, Milan, Italy
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10
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Cho KT, Zhang Y, Orlandi S, Cavazzini M, Zimmermann I, Lesch A, Tabet N, Pozzi G, Grancini G, Nazeeruddin MK. Water-Repellent Low-Dimensional Fluorous Perovskite as Interfacial Coating for 20% Efficient Solar Cells. Nano Lett 2018; 18:5467-5474. [PMID: 30134112 DOI: 10.1021/acs.nanolett.8b01863] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Hybrid perovskite solar cells have been capturing an enormous research interest in the energy sector due to their extraordinary performances and ease of fabrication. However, low device lifetime, mainly due to material and device degradation upon water exposure, challenges their near-future commercialization. Here, we synthesized a new fluorous organic cation used as organic spacer to form a low-dimensional perovskite (LDP) with an enhanced water-resistant character. The LDP is integrated with three-dimensional (3D) perovskite absorbers in the form of MA0.9FA0.1PbI3 (FA = NH2CH = NH2+, MA = CH3NH3+) and Cs0.1FA0.74MA0.13PbI2.48Br0.39. In both cases, a LDP layer self-assembles as a thin capping layer on the top of the 3D bulk, making the perovskite surface hydrophobic. Our easy and robust approach, validated for different perovskite compositions, limits the interface deterioration in perovskite solar cells yielding to >20% power conversion efficient solar cells with improved stability, especially pronounced in the first hours of functioning under environmental conditions. As a consequence, single and multijunction perovskite devices, such as tandem solar cells, can benefit from the use of the waterproof stabilization here demonstrated, a concept which can be further expanded in the perovskite optoelectronic industry beyond photovoltaics.
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Affiliation(s)
- Kyung Taek Cho
- Group for Molecular Engineering of Functional Materials , Ecole Polytechnique Fédérale Lausanne Valais Wallis , CH-1951 Sion , Switzerland
| | - Yi Zhang
- Group for Molecular Engineering of Functional Materials , Ecole Polytechnique Fédérale Lausanne Valais Wallis , CH-1951 Sion , Switzerland
| | - Simonetta Orlandi
- Istituto di Scienze e Tecnologie Molecolari del CNR, ISTM-CNR , via Golgi, 19 , I-20133 Milano , Italy
| | - Marco Cavazzini
- Istituto di Scienze e Tecnologie Molecolari del CNR, ISTM-CNR , via Golgi, 19 , I-20133 Milano , Italy
| | - Iwan Zimmermann
- Group for Molecular Engineering of Functional Materials , Ecole Polytechnique Fédérale Lausanne Valais Wallis , CH-1951 Sion , Switzerland
| | - Andreas Lesch
- LEPA , Ecole Polytechnique Fédérale Lausanne Valais Wallis , Sion CH-1951 , Switzerland
| | - Nouar Tabet
- Qatar Environment and Energy Research Institute , Hamad Bin Khalifa University (HBKU) , Qatar Foundation, Doha , 5825 , Qatar
| | - Gianluca Pozzi
- Istituto di Scienze e Tecnologie Molecolari del CNR, ISTM-CNR , via Golgi, 19 , I-20133 Milano , Italy
| | - Giulia Grancini
- Group for Molecular Engineering of Functional Materials , Ecole Polytechnique Fédérale Lausanne Valais Wallis , CH-1951 Sion , Switzerland
| | - Mohammad Khaja Nazeeruddin
- Group for Molecular Engineering of Functional Materials , Ecole Polytechnique Fédérale Lausanne Valais Wallis , CH-1951 Sion , Switzerland
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11
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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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12
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Milan R, Selopal GS, Cavazzini M, Orlandi S, Boaretto R, Caramori S, Concina I, Pozzi G. Dye-sensitized solar cells based on a push-pull zinc phthalocyanine bearing diphenylamine donor groups: computational predictions face experimental reality. Sci Rep 2017; 7:15675. [PMID: 29142212 PMCID: PMC5688058 DOI: 10.1038/s41598-017-15745-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [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: 06/30/2017] [Accepted: 10/26/2017] [Indexed: 11/17/2022] Open
Abstract
Computational studies have suggested that the integration of secondary amine as donor groups in the structure of unsymmetrical zinc phthalocyanine (ZnPc) should have positive effects on photovoltaic performance, once the molecule is integrated as light harvester in dye sensitized solar cells (DSSCs). Aiming at obtaining experimental confirmation, we synthesized a peripherally substituted push-pull ZnPc bearing three electron donating diphenylamine substituents and a carboxylic acid anchoring group and integrated it as sensitizer in TiO2-based DSSCs. Detailed functional characterization of solar energy converting devices resulted in ruling out the original hypothesis. The causes of this discrepancy have been highlighted, leading to a better understanding of the conditions for an effective design of push-pull diarylamino substituted ZnPcs for DSSCs.
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Affiliation(s)
- Riccardo Milan
- Department of Information Engineering, University of Brescia, Via Valotti, 9 - 25131, Brescia, Italy.,CNR-INO SENSOR Laboratory, via Branze, 45 - 25123, Brescia, Italy.,Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, 32000, Haifa, Israel
| | - Gurpreet Singh Selopal
- Department of Information Engineering, University of Brescia, Via Valotti, 9 - 25131, Brescia, Italy.,Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China.,Institut National de la Recherche Scientifique, Centre Énergie, Matériaux et Télécommunications, 1650 Boul. Lionel Boulet, Varennes, QC J3X 1S2, Canada
| | - Marco Cavazzini
- Institute of Molecular Science and Technology, ISTM-CNR, Via Golgi 19, 20133, Milano, Italy
| | - Simonetta Orlandi
- Institute of Molecular Science and Technology, ISTM-CNR, Via Golgi 19, 20133, Milano, Italy
| | - Rita Boaretto
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, Via Borsari 46, 44121, Ferrara, Italy
| | - Stefano Caramori
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, Via Borsari 46, 44121, Ferrara, Italy
| | - Isabella Concina
- Department of Information Engineering, University of Brescia, Via Valotti, 9 - 25131, Brescia, Italy. .,CNR-INO SENSOR Laboratory, via Branze, 45 - 25123, Brescia, Italy. .,Division of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, 971 87, Luleå, Sweden.
| | - Gianluca Pozzi
- Institute of Molecular Science and Technology, ISTM-CNR, Via Golgi 19, 20133, Milano, Italy.
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13
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Grancini G, Viola D, Lee Y, Saliba M, Paek S, Cho KT, Orlandi S, Cavazzini M, Fungo F, Hossain MI, Belaidi A, Tabet N, Pozzi G, Cerullo G, Nazeeruddin MK. Femtosecond Charge-Injection Dynamics at Hybrid Perovskite Interfaces. Chemphyschem 2017. [PMID: 28627744 DOI: 10.1002/cphc.201700492] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
With a power conversion efficiency (PCE) exceeding 22 %, perovskite solar cells (PSCs) have thrilled photovoltaic research. However, the interface behavior is still not understood and is a hot topic of research: different processes occur over a hierarchy of timescales, from femtoseconds to seconds, which makes perovskite interface physics intriguing. Herein, through femtosecond transient absorption spectroscopy with spectral coverage extending into the crucial IR region, the ultrafast interface-specific processes at standard and newly molecularly engineered perovskite interfaces in state-of-the-art PSCs are interrogated. Ultrafast interfacial charge injection occurs with a time constant of 100 fs, resulting in hot transfer from energetic charges and setting the timescale for the first step involved in the complex charge-transfer process. This is also true for 20 % efficient devices measured under real operation, for which the femtosecond injection is followed by a slower picosecond component. These findings provide compelling evidence for the femtosecond interfacial charge-injection step and demonstrate a robust method for the straightforward identification of interfacial non-equilibrium processes on the ultrafast timescale.
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Affiliation(s)
- Giulia Grancini
- Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1951, Sion, Switzerland
| | - Daniele Viola
- Istituto di Fotonica e Nanotecnologie del CNR, Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milano, Italy
| | - Yonghui Lee
- Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1951, Sion, Switzerland
| | - Michael Saliba
- Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1951, Sion, Switzerland
| | - Sanghyun Paek
- Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1951, Sion, Switzerland
| | - Kyung Taek Cho
- Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1951, Sion, Switzerland
| | - Simonetta Orlandi
- Istituto di Scienze e Tecnologie Molecolari del CNR, ISTM-CNR, via Golgi, 19, I-20133, Milano, Italy
| | - Marco Cavazzini
- Istituto di Scienze e Tecnologie Molecolari del CNR, ISTM-CNR, via Golgi, 19, I-20133, Milano, Italy
| | - Fernando Fungo
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal 3, X5804BYA, 5800, Río Cuarto, Argentina
| | - Mohammad I Hossain
- Qatar Environment and Energy Research Institute, Hamad Bin Khalifa University, HBKU, Qatar Foundation, Doha, 5825, Qatar
| | - Abdelhak Belaidi
- Qatar Environment and Energy Research Institute, Hamad Bin Khalifa University, HBKU, Qatar Foundation, Doha, 5825, Qatar
| | - Nouar Tabet
- Qatar Environment and Energy Research Institute, Hamad Bin Khalifa University, HBKU, Qatar Foundation, Doha, 5825, Qatar
| | - Gianluca Pozzi
- Istituto di Scienze e Tecnologie Molecolari del CNR, ISTM-CNR, via Golgi, 19, I-20133, Milano, Italy
| | - Giulio Cerullo
- Istituto di Fotonica e Nanotecnologie del CNR, Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milano, Italy
| | - Mohammad Khaja Nazeeruddin
- Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1951, Sion, Switzerland
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14
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Pecnikaj I, Minudri D, Otero L, Fungo F, Cavazzini M, Orlandi S, Pozzi G. Fluorous molecules for dye-sensitized solar cells: synthesis and properties of di-branched, di-anchoring organic sensitizers containing fluorene subunits. NEW J CHEM 2017. [DOI: 10.1039/c7nj01516j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four organic sensitizers having a di-branched molecular structure D–(π–A)2 were applied in the development of dye-sensitized solar cells (DSSCs).
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Affiliation(s)
- Ilir Pecnikaj
- Department of Chemical
- Toxicological and Pharmacological Evaluation of Drugs
- Faculty of Pharmacy
- Catholic University Our Lady of Good Counsel
- Tirana
| | - Daniela Minudri
- Departamento de Química
- Universidad Nacional de Río Cuarto. CONICET
- Río Cuarto
- Argentina
| | - Luis Otero
- Departamento de Química
- Universidad Nacional de Río Cuarto. CONICET
- Río Cuarto
- Argentina
| | - Fernando Fungo
- Departamento de Química
- Universidad Nacional de Río Cuarto. CONICET
- Río Cuarto
- Argentina
| | - Marco Cavazzini
- Istituto di Scienze e Tecnologie Molecolari del Consiglio Nazionale delle Ricerche
- ISTM-CNR
- 20133 Milano
- Italy
| | - Simonetta Orlandi
- Istituto di Scienze e Tecnologie Molecolari del Consiglio Nazionale delle Ricerche
- ISTM-CNR
- 20133 Milano
- Italy
| | - Gianluca Pozzi
- Istituto di Scienze e Tecnologie Molecolari del Consiglio Nazionale delle Ricerche
- ISTM-CNR
- 20133 Milano
- Italy
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15
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Mian F, Bottaro G, Seraglia R, Cavazzini M, Quici S, Armelao L. The Role of Ligand Topology in the Decomplexation of Luminescent Lanthanide Complexes by Dipicolinic Acid. Chemphyschem 2016; 17:3229-3236. [DOI: 10.1002/cphc.201600727] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Federica Mian
- Dipartimento di Scienze Chimiche Università di Padova and INSTM; Via F. Marzolo 1 35131 Padova Italy
| | - Gregorio Bottaro
- ICMATE-CNR and INSTM; Dipartimento di Scienze Chimiche Università di Padova; Via F. Marzolo 1 35131 Padova Italy
| | - Roberta Seraglia
- ICMATE-CNR and INSTM; Dipartimento di Scienze Chimiche Università di Padova; Via F. Marzolo 1 35131 Padova Italy
| | | | | | - Lidia Armelao
- Dipartimento di Scienze Chimiche Università di Padova and INSTM; Via F. Marzolo 1 35131 Padova Italy
- ICMATE-CNR and INSTM; Dipartimento di Scienze Chimiche Università di Padova; Via F. Marzolo 1 35131 Padova Italy
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16
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Orlandi S, Pozzi G, Cavazzini M, Minudri D, Gervaldo M, Otero L, Fungo F. Synthesis and Properties of an Electropolymer Obtained from a Dimeric Donor/Acceptor System with a 4,4′-Spirobi[cyclopenta[2,1-b:3,4-b′]dithiophene] Core. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00845] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Simonetta Orlandi
- Istituto di Scienze
e Tecnologie Molecolari
del Consiglio Nazionale delle Ricerche, ISTM-CNR, via Golgi 19, 20133 Milano, Italy
| | - Gianluca Pozzi
- Istituto di Scienze
e Tecnologie Molecolari
del Consiglio Nazionale delle Ricerche, ISTM-CNR, via Golgi 19, 20133 Milano, Italy
| | - Marco Cavazzini
- Istituto di Scienze
e Tecnologie Molecolari
del Consiglio Nazionale delle Ricerche, ISTM-CNR, via Golgi 19, 20133 Milano, Italy
| | - Daniela Minudri
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal 3 (X5804BYA), 5800 Río Cuarto, Argentina
| | - Miguel Gervaldo
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal 3 (X5804BYA), 5800 Río Cuarto, Argentina
| | - Luis Otero
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal 3 (X5804BYA), 5800 Río Cuarto, Argentina
| | - Fernando Fungo
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal 3 (X5804BYA), 5800 Río Cuarto, Argentina
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17
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Bottaro G, Rizzo F, Cavazzini M, Armelao L, Quici S. Back Cover: Efficient Luminescence from Fluorene- and Spirobifluorene-Based Lanthanide Complexes upon Near-Visible Irradiation (Chem. Eur. J. 16/2014). Chemistry 2014. [DOI: 10.1002/chem.201490066] [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]
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18
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Bottaro G, Rizzo F, Cavazzini M, Armelao L, Quici S. Efficient Luminescence from Fluorene- and Spirobifluorene-Based Lanthanide Complexes upon Near-Visible Irradiation. Chemistry 2014; 20:4598-607. [DOI: 10.1002/chem.201305029] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Revised: 02/07/2014] [Indexed: 01/05/2023]
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19
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Pozzi G, Orlandi S, Cavazzini M, Minudri D, Macor L, Otero L, Fungo F. Synthesis and Photovoltaic Applications of a 4,4′-Spirobi[cyclopenta[2,1-b;3,4-b′]dithiophene]-Bridged Donor/Acceptor Dye. Org Lett 2013; 15:4642-5. [DOI: 10.1021/ol402420w] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Gianluca Pozzi
- Istituto di Scienze e Tecnologie Molecolari del Consiglio Nazionale delle Ricerche, ISTM-CNR, via Golgi 19, 20133 Milano, Italy, and Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal No 3, X5804BYA, Río Cuarto, Argentina
| | - Simonetta Orlandi
- Istituto di Scienze e Tecnologie Molecolari del Consiglio Nazionale delle Ricerche, ISTM-CNR, via Golgi 19, 20133 Milano, Italy, and Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal No 3, X5804BYA, Río Cuarto, Argentina
| | - Marco Cavazzini
- Istituto di Scienze e Tecnologie Molecolari del Consiglio Nazionale delle Ricerche, ISTM-CNR, via Golgi 19, 20133 Milano, Italy, and Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal No 3, X5804BYA, Río Cuarto, Argentina
| | - Daniela Minudri
- Istituto di Scienze e Tecnologie Molecolari del Consiglio Nazionale delle Ricerche, ISTM-CNR, via Golgi 19, 20133 Milano, Italy, and Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal No 3, X5804BYA, Río Cuarto, Argentina
| | - Lorena Macor
- Istituto di Scienze e Tecnologie Molecolari del Consiglio Nazionale delle Ricerche, ISTM-CNR, via Golgi 19, 20133 Milano, Italy, and Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal No 3, X5804BYA, Río Cuarto, Argentina
| | - Luis Otero
- Istituto di Scienze e Tecnologie Molecolari del Consiglio Nazionale delle Ricerche, ISTM-CNR, via Golgi 19, 20133 Milano, Italy, and Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal No 3, X5804BYA, Río Cuarto, Argentina
| | - Fernando Fungo
- Istituto di Scienze e Tecnologie Molecolari del Consiglio Nazionale delle Ricerche, ISTM-CNR, via Golgi 19, 20133 Milano, Italy, and Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal No 3, X5804BYA, Río Cuarto, Argentina
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20
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Cavazzini M, Quici S, Orlandi S, Sissa C, Terenziani F, Painelli A. Intimately bound coumarin and bis(alkylaminostyryl)benzene fragments: synthesis and energy transfer. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.01.075] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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Martín Rodríguez E, Bogdan N, Capobianco JA, Orlandi S, Cavazzini M, Scalera C, Quici S. A highly sensitive luminescent lectin sensor based on an α-d-mannose substituted Tb3+ antenna complex. Dalton Trans 2013; 42:9453-61. [DOI: 10.1039/c3dt33023k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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22
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Sissa C, Calabrese V, Cavazzini M, Grisanti L, Terenziani F, Quici S, Painelli A. Tuning the Nature of the Fluorescent State: A Substituted Polycondensed Dye as a Case Study. Chemistry 2012. [DOI: 10.1002/chem.201202154] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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23
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Colombo A, Locatelli D, Roberto D, Tessore F, Ugo R, Cavazzini M, Quici S, De Angelis F, Fantacci S, Ledoux-Rak I, Tancrez N, Zyss J. New [(D-terpyridine)-Ru-(D or A-terpyridine)][4-EtPhCO2]2 complexes (D = electron donor group; A = electron acceptor group) as active second-order non linear optical chromophores. Dalton Trans 2012; 41:6707-14. [DOI: 10.1039/c2dt30183k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [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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24
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Campagna S, Cavazzini M, Cusumano M, Di Pietro ML, Giannetto A, Puntoriero F, Quici S. Luminescent Ir(III) complex exclusively made of polypyridine ligands capable of intercalating into calf-thymus DNA. Inorg Chem 2011; 50:10667-72. [PMID: 21958310 DOI: 10.1021/ic2010437] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Efficient intercalation of a luminescent Ir(III) complex exclusively made of polypyridine ligands in natural and synthetic biopolymers is reported for the first time. The emission of the complex is largely enhanced in the presence of [poly(dA-dT)(2)] and strongly quenched in the presence of [poly(dG-dC)(2)]. By comparing the emission decays in DNA and in synthetic polynucleotides, it is proposed that the emission quenching of the title compound by guanine residues in DNA is no longer effective over a distance of four dA-dT base pairs.
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Affiliation(s)
- Sebastiano Campagna
- Dipartimento di Chimica Inorganica, Chimica Analitica e Chimica Fisica, Università di Messina, Via F. Stagno D'Alcontres 31, 98166 Messina, Italy.
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25
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Grisanti L, Terenziani F, Sissa C, Cavazzini M, Rizzo F, Orlandi S, Painelli A. Polar Fluorenes and Spirobifluorenes: Fluorescence and Fluorescence Anisotropy Spectra. J Phys Chem B 2011; 115:11420-30. [DOI: 10.1021/jp206592s] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Luca Grisanti
- Dipartimento di Chimica GIAF and INSTM-UdR Parma, Università degli studi di Parma, Parco Area delle Scienze 17/a, 43124 Parma, Italy
| | - Francesca Terenziani
- Dipartimento di Chimica GIAF and INSTM-UdR Parma, Università degli studi di Parma, Parco Area delle Scienze 17/a, 43124 Parma, Italy
| | - Cristina Sissa
- Dipartimento di Chimica GIAF and INSTM-UdR Parma, Università degli studi di Parma, Parco Area delle Scienze 17/a, 43124 Parma, Italy
| | - Marco Cavazzini
- Istituto di Scienze e Tecnologie Molecolari (ISTM), Consiglio Nazionale delle Ricerche (CNR), Via C. Golgi, 19, 20133 Milano, Italy
- Polo Scientifico e Tecnologico (PTS), Consiglio Nazionale delle Ricerche (CNR), via Fantoli, 16/15, 20138 Milano, Italy
| | - Fabio Rizzo
- Istituto di Scienze e Tecnologie Molecolari (ISTM), Consiglio Nazionale delle Ricerche (CNR), Via C. Golgi, 19, 20133 Milano, Italy
- Polo Scientifico e Tecnologico (PTS), Consiglio Nazionale delle Ricerche (CNR), via Fantoli, 16/15, 20138 Milano, Italy
| | - Simonetta Orlandi
- Istituto di Scienze e Tecnologie Molecolari (ISTM), Consiglio Nazionale delle Ricerche (CNR), Via C. Golgi, 19, 20133 Milano, Italy
- Polo Scientifico e Tecnologico (PTS), Consiglio Nazionale delle Ricerche (CNR), via Fantoli, 16/15, 20138 Milano, Italy
| | - Anna Painelli
- Dipartimento di Chimica GIAF and INSTM-UdR Parma, Università degli studi di Parma, Parco Area delle Scienze 17/a, 43124 Parma, Italy
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Armelao L, Bottaro G, Quici S, Cavazzini M, Scalera C, Accorsi G. Synthesis and photophysical characterization of highly luminescent silica films doped with substituted 2-hydroxyphthalamide (IAM) terbium complexes. Dalton Trans 2011; 40:11530-8. [DOI: 10.1039/c1dt11131k] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Armelao L, Quici S, Barigelletti F, Accorsi G, Bottaro G, Cavazzini M, Tondello E. Reply to “Luminescent lanthanide complexes: Selection rules and design”. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2010.05.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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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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Rizzo F, Cavazzini M, Righetto S, De Angelis F, Fantacci S, Quici S. A Joint Experimental and Theoretical Investigation on Nonlinear Optical (NLO) Properties of a New Class of Push-Pull Spirobifluorene Compounds. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000335] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Armelao L, Quici S, Barigelletti F, Accorsi G, Bottaro G, Cavazzini M, Tondello E. Design of luminescent lanthanide complexes: From molecules to highly efficient photo-emitting materials. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.07.025] [Citation(s) in RCA: 765] [Impact Index Per Article: 54.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Cavazzini M, Quici S, Scalera C, Puntoriero F, La Ganga G, Campagna S. Synthesis, Characterization, Absorption Spectra, and Luminescence Properties of Multinuclear Species Made of Ru(II) and Ir(III) Chromophores. Inorg Chem 2009; 48:8578-92. [DOI: 10.1021/ic9006108] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Tuccitto N, Ferri V, Cavazzini M, Quici S, Zhavnerko G, Licciardello A, Rampi MA. Highly conductive approximately 40-nm-long molecular wires assembled by stepwise incorporation of metal centres. Nat Mater 2009; 8:41-46. [PMID: 19011616 DOI: 10.1038/nmat2332] [Citation(s) in RCA: 192] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2008] [Accepted: 10/17/2008] [Indexed: 05/27/2023]
Abstract
One of the main goals of molecular electronics is to achieve electronic functions from devices consisting of tailored organic molecules connecting two metal electrodes. The fabrication of nanometre-scale spaced electrodes still results in expensive, and often scarcely reproducible, devices. On the other hand, the 'conductance' of long organic molecules--generally dominated by the tunnelling mechanism--is very poor. Here, we show that by incorporating a large number of metal centres into rigid molecular backbones we can obtain very long (up to 40 nm) and highly 'conductive' molecular wires. The metal-centre molecular wires are assembled in situ on metal surfaces via a sequential stepwise coordination of metal ions by terpyridine-based ligands. They form highly ordered molecular films of elevated mechanical robustness. The electrical properties, characterized by a junction based on Hg electrodes, indicate that the 'conductance' of these metal-centre molecular wires does not decrease significantly even for very long molecular wires, and depends on the nature of the incorporated redox centre. The outstanding electrical and mechanical characteristics of these easy-to-assemble molecular systems open the door to a new generation of molecular wires, able to bridge large-gap electrodes, and to form robust films for organic electronics.
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Affiliation(s)
- Nunzio Tuccitto
- Dipartimento di Chimica, Università degli Studi di Catania, 95125, Catania, Italy
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Morotti T, Calabrese V, Cavazzini M, Pedron D, Cozzuol M, Licciardello A, Tuccitto N, Quici S. Zirconium phosphate/phosphonate multilayered films based on push–pull stilbazolium salt: synthesis, characterization and second harmonic generation. Dalton Trans 2008:2974-82. [DOI: 10.1039/b801194j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [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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Quici S, Cavazzini M, Raffo MC, Botta M, Giovenzana GB, Ventura B, Accorsi G, Barigelletti F. Luminescence properties and solution dynamics of lanthanide complexes composed by a macrocycle hosting site and naphthalene or quinoline appended chromophore. Inorganica Chim Acta 2007. [DOI: 10.1016/j.ica.2006.12.040] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Tuccitto N, Torrisi V, Cavazzini M, Morotti T, Puntoriero F, Quici S, Campagna S, Licciardello A. Stepwise Formation of Ruthenium(II) Complexes by Direct Reaction on Organized Assemblies of Thiol-Terpyridine Species on Gold. Chemphyschem 2007; 8:227-30. [PMID: 17253653 DOI: 10.1002/cphc.200600573] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Nunzio Tuccitto
- Dipartimento di Scienze Chimiche, Università di Catania, Viale A. Doria 6, 95125 Catania, Italy
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Puntoriero F, Nastasi F, Cavazzini M, Quici S, Campagna S. Coupling synthetic antenna and electron donor species: A tetranuclear mixed-metal Os(II)–Ru(II) dendrimer containing six phenothiazine donor subunits at the periphery. Coord Chem Rev 2007. [DOI: 10.1016/j.ccr.2006.04.005] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Armelao L, Bottaro G, Quici S, Cavazzini M, Raffo MC, Barigelletti F, Accorsi G. Photophysical properties and tunable colour changes of silica single layers doped with lanthanide(iii) complexes. Chem Commun (Camb) 2007:2911-3. [PMID: 17622428 DOI: 10.1039/b702238g] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [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
Highly stable Eu(III) and Tb(III) complexes, emitting in the red and green visible regions, respectively, have been anchored onto a single SiO(2) transparent layer, yielding ca. 40 nm thick films; this allows high loading of tailored proportions of the red and green emitters within the films and results in highly uniform and easily colour-tunable luminescent layers.
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Affiliation(s)
- Lidia Armelao
- Istituto di Scienze e Tecnologie Molecolari, Consiglio Nazionale delle Ricerche e Consorzio Interuniversitario per la Scienza e Tecnologia dei Materiali, Dipartimento di Scienze Chimiche, Università di Padova, Padova, Italy.
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Quici S, Cavazzini M, Raffo MC, Armelao L, Bottaro G, Accorsi G, Sabatini C, Barigelletti F. Highly homogeneous, transparent and luminescent SiO2glassy layers containing a covalently bound tetraazacyclododecane–triacetic acid–Eu(iii)–acetophenone complex. ACTA ACUST UNITED AC 2006. [DOI: 10.1039/b514409d] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [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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Tessore F, Roberto D, Ugo R, Pizzotti M, Quici S, Cavazzini M, Bruni S, De Angelis F. Terpyridine Zn(II), Ru(III), and Ir(III) Complexes: The Relevant Role of the Nature of the Metal Ion and of the Ancillary Ligands on the Second-Order Nonlinear Response of Terpyridines Carrying Electron Donor or Electron Acceptor Groups. Inorg Chem 2005; 44:8967-78. [PMID: 16296852 DOI: 10.1021/ic050975q] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Coordination of 4'-(C6H4-p-X)-2,2':6',2''-terpyridines [X = NO2, NBu2, (E)-CH=CH-C6H4-p-NBu2, (E,E)-(CH=CH)2-C6H4-p-NMe2] to Zn(II), Ru(III), and Ir(III) metal centers induces a significant enhancement of the absolute value of the second-order nonlinear optical (NLO) response of the terpyridine, measured by means of both electric field induced second harmonic generation and solvatochromic methods. By varying the nature of the metal center, the enhanced second-order NLO response shifts from positive to negative. Such a shift is controlled by electronic charge-transfer transitions, such as metal-to-ligand or ligand-to-metal transitions, in addition to the intraligand charge transfer. The enhancement generated by coordination is also controlled by the chelation effect and by fine-tuning of the ancillary ligands.
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Affiliation(s)
- Francesca Tessore
- Dipartimento di Chimica Inorganica, Metallorganica e Analitica dell'Università di Milano, Centro di Eccellenza CIMAINA, Unità di Ricerca di Milano dell'INSTM e Istituto di Scienze e Tecnologie Molecolari del CNR, Milano, Italy.
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Abstract
A new tetranuclear compound containing Ru(II) and Ir(III) polypyridine subunits exhibits two independent emissions at room temperature, as a consequence of weak interchromophoric coupling; in contrast, at 77 K energy transfer from Ir-based chromophores to the Ru-based ones is quantitative.
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Affiliation(s)
- Marco Cavazzini
- Istituto ISTM-CNR Dipartimento di Chimica Organica e Industriale dell'Università, Via Golgi 19, I-20133 Milan, Italy
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Holczknecht O, Cavazzini M, Quici S, Shepperson I, Pozzi G. Selective Oxidation of Alcohols to Carbonyl Compounds Mediated by Fluorous-Tagged TEMPO Radicals. Adv Synth Catal 2005. [DOI: 10.1002/adsc.200404343] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Quici S, Cavazzini M, Marzanni G, Accorsi G, Armaroli N, Ventura B, Barigelletti F. Visible and near-infrared intense luminescence from water-soluble lanthanide [Tb(III), Eu(III), Sm(III), Dy(III), Pr(III), Ho(III), Yb(III), Nd(III), Er(III)] complexes. Inorg Chem 2005; 44:529-37. [PMID: 15679381 DOI: 10.1021/ic0486466] [Citation(s) in RCA: 336] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The synthesis of a new ligand (1) containing a single phenanthroline (phen) chromophore and a flexibly connected diethylenetriamine tetracarboxylic acid unit (DTTA) as a lanthanide (Ln) coordination site is reported [1 is 4-[(9-methyl-1,10-phenantrol-2-yl)methyl]-1,4,7-triazaheptane-1,1,7,7-tetraacetic acid]. From 1, an extended series of water-soluble Ln.1 complexes was obtained, where Ln is Eu(III), Tb(III), Gd(III), Sm(III), Dy(III), Pr(III), Ho(III), Yb(III), Nd(III), and Er(III). The stoichiometry for the association was found 1:1, with an association constant K(A) > or = 10(7) s(-1) as determined by employing luminescence spectroscopy. The luminescence and photophysical properties of the series of lanthanide complexes were investigated in both H2O and D2O solutions. High efficiencies for the sensitized emission, phi(se), in air-equilibrated water were observed for the Ln.1 complexes of Eu(III) and Tb(III) in the visible region (phi(se) = 0.24 and 0.15, respectively) and of Sm(III), Dy(III), Pr(III), Ho(III), Yb(III), Nd(III), and Er(III) in the vis and/or near-infrared region [phi(se) = 2.5 x 10(-3), 5 x 10(-4), 3 x 10(-5), 2 x 10(-5), 2 x 10(-4), 4 x 10(-5), and (in D2O) 4 x 10(-5), respectively]. For Eu.1 and Tb.1, luminescence data for water and deuterated water allowed us to estimate that no solvent molecules (q) are bound to the ion centers (q = 0). Luminescence quenching by oxygen was investigated in selected cases.
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Affiliation(s)
- Silvio Quici
- Istituto ISTM-CNR and Dipartimento di Chimica Organica e Industriale dell'Università, Via Golgi 19, I-20133 Milan, Italy.
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Loiseau F, Pietro CD, Campagna S, Cavazzini M, Marzanni G, Quici S. Proton-assisted interaction between luminescent species containing diazacrown ethers and anthryl chromophores. ACTA ACUST UNITED AC 2005. [DOI: 10.1039/b500918a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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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Pozzi G, Cavazzini M, Quici S, Benaglia M, Dell'Anna G. Poly(ethylene glycol)-Supported TEMPO: An Efficient, Recoverable Metal-Free Catalyst for the Selective Oxidation of Alcohols. Org Lett 2004; 6:441-3. [PMID: 14748613 DOI: 10.1021/ol036398w] [Citation(s) in RCA: 117] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[structure: see text] Poly(ethylene glycol)-supported TEMPO (PEG-TEMPO) has been prepared, and its catalytic activity in the chemoselective oxidation of alcohols with stoichiometric amounts of organic or inorganic oxidants has been investigated. The new metal-free catalyst exhibits high activity and is easily removed from the reaction mixture by filtration. Recycling experiments showed that PEG-TEMPO can be reused up to six times with no loss of catalytic activity.
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Affiliation(s)
- Gianluca Pozzi
- CNR-Istituto di Scienze e Tecnologie Molecolari, Via Golgi 19, I-20133 Milano, Italy.
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Quici S, Marzanni G, Cavazzini M, Anelli PL, Botta M, Gianolio E, Accorsi G, Armaroli N, Barigelletti F. Highly luminescent Eu(3+) and Tb(3+) macrocyclic complexes bearing an appended phenanthroline chromophore. Inorg Chem 2002; 41:2777-84. [PMID: 12005503 DOI: 10.1021/ic025543j] [Citation(s) in RCA: 97] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A two-component ligand system (1) containing 1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid (DO3A) as the hosting unit for the lanthanide cations and an appended asymmetrically functionalized 1,10-phenanthroline (phen) as the chromophore was synthesized. The 1:1 complexes with Eu(3+), Gd(3+), Tb(3+), and Yb(3+) have been prepared and studied in aqueous solution. For Gd.1, a relaxivity value of 2.4 mM(-1) s(-1) has been measured at 20 MHz and 25 degrees C, which indicates that there are no water molecules in the first coordination sphere of the metal ion. The analysis of high resolution (1)H NMR spectra of Yb.1 supports this view and suggests the direct involvement of the phen moiety in the coordination of the metal ion. For Eu.1 and Tb.1, the absorption and luminescence spectra, the overall luminescence efficiencies, and the metal-centered (MC) lifetimes were obtained; coordination features were also determined by comparing luminescence properties in water and deuterated water. For Eu.1 and Tb.1, the overall emission sensitization (se) process in air-equilibrated water was found to be notably effective with phi(se) = 0.21 and 0.11, respectively. A detailed study of the steps originating from light absorption at the phen unit and leading to MC sensitized emission was performed.
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Affiliation(s)
- Silvio Quici
- Istituto ISTM-CNR and Dipartimento di Chimica Organica e Industriale dell'Università, Via C. Golgi 19, I-20133 Milano, Italy.
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Cavazzini M, Manfredi A, Montanari F, Quici S, Pozzi G. Asymmetric Epoxidation of Alkenes in Fluorinated Media, Catalyzed by Second-Generation Fluorous Chiral (Salen)manganese Complexes. European J Org Chem 2001. [DOI: 10.1002/1099-0690(200112)2001:24<4639::aid-ejoc4639>3.0.co;2-w] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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