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Shoaib AGM, Van HT, Tran DT, El Sikaily A, Hassaan MA, El Nemr A. Green algae Ulva lactuca-derived biochar-sulfur improves the adsorption of methylene blue from water. Sci Rep 2024; 14:11583. [PMID: 38773106 PMCID: PMC11109274 DOI: 10.1038/s41598-024-61868-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Accepted: 05/10/2024] [Indexed: 05/23/2024] Open
Abstract
The present investigation explores the efficacy of green algae Ulva lactuca biochar-sulfur (GABS) modified with H2SO4 and NaHCO3 in adsorbing methylene blue (MB) dye from aqueous solutions. The impact of solution pH, contact duration, GABS dosage, and initial MB dye concentration on the adsorption process are all methodically investigated in this work. To obtain a thorough understanding of the adsorption dynamics, the study makes use of several kinetic models, including pseudo-first order and pseudo-second order models, in addition to isotherm models like Langmuir, Freundlich, Tempkin, and Dubinin-Radushkevich. The findings of the study reveal that the adsorption capacity at equilibrium (qe) reaches 303.78 mg/g for a GABS dose of 0.5 g/L and an initial MB dye concentration of 200 mg/L. Notably, the Langmuir isotherm model consistently fits the experimental data across different GABS doses, suggesting homogeneous adsorption onto a monolayer surface. The potential of GABS as an efficient adsorbent for the extraction of MB dye from aqueous solutions is highlighted by this discovery. The study's use of kinetic and isotherm models provides a robust framework for understanding the intricacies of MB adsorption onto GABS. By elucidating the impact of various variables on the adsorption process, the research contributes valuable insights that can inform the design of efficient wastewater treatment solutions. The comprehensive analysis presented in this study serves as a solid foundation for further research and development in the field of adsorption-based water treatment technologies.
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Affiliation(s)
- Amany G M Shoaib
- Environment Division, National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, Elanfoushy, Alexandria, Egypt
| | - Huu-Tap Van
- Center for Advanced Technology Development, Thai Nguyen University, Tan Thinh Ward, Thai Nguyen City, 25000, Vietnam
| | - Dinh-Trinh Tran
- VNU Key Lab. of Advanced Materials for Green Growth, University of Science, Vietnam National University, No. 19 Le Thanh Tong Street, Hoan Kiem, Hanoi, 120000, Vietnam
| | - Amany El Sikaily
- Environment Division, National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, Elanfoushy, Alexandria, Egypt
| | - Mohamed A Hassaan
- Environment Division, National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, Elanfoushy, Alexandria, Egypt
| | - Ahmed El Nemr
- Environment Division, National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, Elanfoushy, Alexandria, Egypt.
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Rodrigues CH, Silva BP, Silva MLR, Gouveia DC, Fontes A, Macêdo DPC, Santos BS. Methylene blue@silver nanoprisms conjugates as a strategy against Candida albicans isolated from balanoposthitis using photodynamic inactivation. Photodiagnosis Photodyn Ther 2024; 46:104066. [PMID: 38552814 DOI: 10.1016/j.pdpdt.2024.104066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 03/06/2024] [Accepted: 03/22/2024] [Indexed: 04/12/2024]
Abstract
Balanoposthitis can affect men in immunocompromised situations, such as HIV infection and diabetes. The main associated microorganism is Candida albicans, which can cause local lesions, such as the development of skin cracks associated with itching. As an alternative to conventional treatment, there is a growing interest in the photodynamic inactivation (PDI). It has been shown that the association of photosensitizers with metallic nanoparticles may improve the effectiveness of PDI via plasmonic effect. We have recently shown that the association of methylene blue (MB), a very known photosensitizer, with silver prismatic nanoplatelets (AgNPrs) improved PDI of a resistant strain of Staphylococcus aureus. To further investigate the experimental conditions involved in PDI improvement, in the present study, we studied the effect of MB concentration associated with AgNPrs exploring spectral analysis, zeta potential measurements, and biological assays, testing the conjugated system against C. albicans isolated from a resistant strain of balanoposthitis. The AgNPrs were synthesized through silver anisotropic seed growth induced by the anionic stabilizing agent poly(sodium 4-styrenesulfonate) and showed a plasmon band fully overlapping the MB absorption band. MB and AgNPrs were conjugated through electrostatic association and three different MB concentrations were tested in the nanosystems. Inactivation using red LED light (660 nm) showed a dose dependency in respect to the MB concentration in the conjugates. Using the highest MB concentration (100 µmol⋅L-1) with AgNPr, it was possible to completely inactivate the microorganisms upon a 2 min irradiation exposure. Analyzing optical changes in the conjugates we suggest that these results indicate that AgNPrs are enhancers of MB photodynamic action probably by a combined mechanism of plasmonic effect and reduction of MB dimerization. Therefore, MBAgNPrs can be considered a suitable choice to be applied in PDI of resistant microorganisms.
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Affiliation(s)
- Cláudio H Rodrigues
- Departamento de Ciências Farmacêuticas, Universidade Federal de Pernambuco, Recife 50670-901, PE, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Pernambuco, Recife 50670-901, PE, Brazil
| | - Bruna Pereira Silva
- Departamento de Ciências Farmacêuticas, Universidade Federal de Pernambuco, Recife 50670-901, PE, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Pernambuco, Recife 50670-901, PE, Brazil
| | - Marques L R Silva
- Departamento de Ciências Farmacêuticas, Universidade Federal de Pernambuco, Recife 50670-901, PE, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Pernambuco, Recife 50670-901, PE, Brazil
| | - Dimitri C Gouveia
- Departamento de Ciências Farmacêuticas, Universidade Federal de Pernambuco, Recife 50670-901, PE, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Pernambuco, Recife 50670-901, PE, Brazil
| | - Adriana Fontes
- Departamento de Biofísica e Radiobiologia, Universidade Federal de Pernambuco, Recife 50670-901, PE, Brazil
| | - Danielle P C Macêdo
- Departamento de Ciências Farmacêuticas, Universidade Federal de Pernambuco, Recife 50670-901, PE, Brazil
| | - Beate S Santos
- Departamento de Ciências Farmacêuticas, Universidade Federal de Pernambuco, Recife 50670-901, PE, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Pernambuco, Recife 50670-901, PE, Brazil.
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Hannan MN, Sharma AK, Baran TM. First in human measurements of abscess cavity optical properties and methylene blue uptake prior to photodynamic therapy by in vivo diffuse reflectance spectroscopy. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.10.16.23297088. [PMID: 37905076 PMCID: PMC10615020 DOI: 10.1101/2023.10.16.23297088] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2023]
Abstract
Significance Efficacious photodynamic therapy (PDT) of abscess cavities requires personalized treatment planning. This relies on knowledge of abscess wall optical properties, which we report for the first time in human subjects. Aim The objective was to extract optical properties and photosensitizer concentration from spatially-resolved diffuse reflectance measurements of abscess cavities prior to methylene blue (MB) PDT, as part of a Phase 1 clinical trial. Approach Diffuse reflectance spectra were collected at the abscess wall of 13 human subjects using a custom fiber-optic probe and optical spectroscopy system, before and after MB administration. A Monte Carlo lookup table was used to extract optical properties. Results Pre-MB abscess wall absorption coefficients at 665 nm were 0.15±0.1 cm -1 (0.03-0.36 cm -1 ) and 10.74±15.81 cm -1 (0.08-49.3 cm -1 ) post-MB. Reduced scattering coefficients at 665 nm were 8.45±2.37 cm -1 (4.8-13.2 cm -1 ) and 5.6±2.26 cm -1 (1.6-9.9 cm -1 ) for pre-MB and post-MB, respectively. Oxygen saturations were found to be 58.83±35.78% (5.6-100%) pre-MB and 36.29±25.1% (0.0001-76.4%) post-MB. Determined MB concentrations were 71.83±108.22 µM (0-311 µM). Conclusions We observed substantial inter-subject variation in both native wall optical properties and methylene blue uptake. This underscores the importance of making these measurements for patient-specific treatment planning.
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Bujdák J. Controversial Issues Related to Dye Adsorption on Clay Minerals: A Critical Review. Molecules 2023; 28:6951. [PMID: 37836793 PMCID: PMC10574638 DOI: 10.3390/molecules28196951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/30/2023] [Accepted: 10/04/2023] [Indexed: 10/15/2023] Open
Abstract
This critical review points out the most serious and problematic issues to be found in the literature on the adsorption of dyes on clay minerals. The introduction draws attention to the fundamental problems, namely the insufficient characterization of adsorbents, the influence of impurities on the adsorption of dyes, and the choice of inappropriate models for the description of the very complex systems that clay minerals and their systems represent. This paper discusses the main processes accompanying adsorption in colloidal systems of clay minerals. The relationship between the stability of the colloidal systems and the adsorption of dye molecules is analyzed. The usual methodological procedures for determining and evaluating the adsorption of dyes are critically reviewed. A brief overview and examples of modified clay minerals and complex systems for the adsorption of organic dyes are summarized. This review is a guide for avoiding some faults in characterizing the adsorption of organic dyes on clay minerals, to improve the procedure for determining adsorption, to evaluate results correctly, and to find an appropriate theoretical interpretation. The main message of this article is a critical analysis of the current state of the research in this field, but at the same time, it is a guide on how to avoid the most common problems and mistakes.
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Affiliation(s)
- Juraj Bujdák
- Department of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, 842 15 Bratislava, Slovakia; ; Tel.: +421-2-9014-9602
- Institute of Inorganic Chemistry, Slovak Academy of Sciences, 845 36 Bratislava, Slovakia
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5
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Chino M, La Gatta S, Leone L, De Fenza M, Lombardi A, Pavone V, Maglio O. Dye Decolorization by a Miniaturized Peroxidase Fe-MimochromeVI*a. Int J Mol Sci 2023; 24:11070. [PMID: 37446248 DOI: 10.3390/ijms241311070] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 06/23/2023] [Accepted: 07/01/2023] [Indexed: 07/15/2023] Open
Abstract
Oxidases and peroxidases have found application in the field of chlorine-free organic dye degradation in the paper, toothpaste, and detergent industries. Nevertheless, their widespread use is somehow hindered because of their cost, availability, and batch-to-batch reproducibility. Here, we report the catalytic proficiency of a miniaturized synthetic peroxidase, Fe-Mimochrome VI*a, in the decolorization of four organic dyes, as representatives of either the heterocyclic or triarylmethane class of dyes. Fe-Mimochrome VI*a performed over 130 turnovers in less than five minutes in an aqueous buffer at a neutral pH under mild conditions.
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Affiliation(s)
- Marco Chino
- Department of Chemical Sciences, University of Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Salvatore La Gatta
- Department of Chemical Sciences, University of Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Linda Leone
- Department of Chemical Sciences, University of Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Maria De Fenza
- Department of Chemical Sciences, University of Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Angela Lombardi
- Department of Chemical Sciences, University of Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Vincenzo Pavone
- Department of Chemical Sciences, University of Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Ornella Maglio
- Department of Chemical Sciences, University of Napoli Federico II, Via Cintia, 80126 Napoli, Italy
- Institute of Biostructures and Bioimaging (IBB), National Research Council (CNR), Via Pietro Castellino 111, 80131 Napoli, Italy
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Patil V, Hardikar H, Joshi S, Tembe S. Optical detection of total cholesterol based on a dye-displacement method. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 293:122425. [PMID: 36773424 DOI: 10.1016/j.saa.2023.122425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 01/10/2023] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
In the present study, the dye methylene blue (MB) was entrapped in an agarose gel and used as a sensing probe for the detection of total cholesterol. When methylene blue-entrapped agarose cubes were added to the cholesterol solution, methylene blue was displaced by cholesterol and released into the solution. A calibration curve was prepared by plotting the rate of release of methylene blue at 664 nm against varying cholesterol concentrations. A linear response was observed in the concentration range of 1 to 5 mM (40 mg/dL to 200 mg/dL) which covers normal and elevated cholesterol levels in humans. Optical detection of cholesterol using this dye-replacement method is simple, economical, and non-toxic. Characterisation of the system was carried out by FT-IR spectroscopy and cyclic voltammetry. The optical method was validated to determine total cholesterol in serum samples with reasonable accuracy.
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Affiliation(s)
- Vikas Patil
- Department of Biotechnology, Fergusson College (Autonomous), Fergusson College Road, Shivajinagar, Pune 411004, Maharashtra, India
| | - Hrishikesh Hardikar
- Department of Biotechnology, Fergusson College (Autonomous), Fergusson College Road, Shivajinagar, Pune 411004, Maharashtra, India
| | - Sonali Joshi
- Department of Biotechnology, Fergusson College (Autonomous), Fergusson College Road, Shivajinagar, Pune 411004, Maharashtra, India
| | - Sanket Tembe
- Department of Biotechnology, Fergusson College (Autonomous), Fergusson College Road, Shivajinagar, Pune 411004, Maharashtra, India.
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Schade AH, Mei L. Applications of red light photoredox catalysis in organic synthesis. Org Biomol Chem 2023; 21:2472-2485. [PMID: 36880439 DOI: 10.1039/d3ob00107e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
Photoredox catalysis has emerged as an efficient and versatile approach for developing novel synthetic methodologies. Particularly, red light photocatalysis has attracted more attention due to its intrinsic advantages of low energy, few health risks, few side reactions, and high penetration depth through various media. Impressive progress has been made in this field. In this review, we outline the applications of different photoredox catalysts in a wide range of red light-mediated reactions including direct red light photoredox catalysis, red light photoredox catalysis through upconversion, and dual red light photoredox catalysis. Due to the similarities between near-infrared (NIR) and red light, an overview of NIR-induced reactions is also presented. Lastly, current evidence showing the advantages of red light and NIR photoredox catalysis is also described.
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Affiliation(s)
- Alexander H Schade
- Department of Chemistry, Colgate University, 13 Oak Dr, Hamilton, NY 13346, USA.
| | - Liangyong Mei
- Department of Chemistry, Colgate University, 13 Oak Dr, Hamilton, NY 13346, USA.
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8
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Vardevanyan PO, Antonyan AP, Movsisyan ZH, Parsadanyan MA, Shahinyan MA, Grigoryan KR, Shilajyan HA. Study of complexation of single-stranded poly(rA) and poly(rU) with methylene blue. J Biomol Struct Dyn 2023; 41:15320-15327. [PMID: 36919567 DOI: 10.1080/07391102.2023.2189475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 02/27/2023] [Indexed: 03/16/2023]
Abstract
To reveal the effect of DNA- or RNA-specific low-molecular compounds on cellular processes on the molecular level, we have carried out the studies with the application of spectroscopic methods. It is necessary for the understanding of structural-functional properties of nucleic acids in cell. In this work the interaction of DNA-specific thiazine dye methylene blue (MB) with synthetic polynucleotides poly(rA) and poly(rU) was studied. The interaction of MB with synthetic polyribonucleotides poly(rA) and poly(rU) was examined in the solution with high ionic strength in a wide phosphate-to-dye (P/D) range, using the absorption and fluorescence spectroscopies, as well as the fluorescence 2D spectra and 3D spectra analyses were given. Values of the fluorescence quenching constants for the complexes of MB with poly(rA) and poly(rU) were calculated (KSV is the Stern-Volmer quenching constant). Two different modes of MB binding to single-stranded (ss-) poly(rA) and poly(rU) and to their hybrid double-stranded (ds-) structure - poly(rA)-poly(rU) were identified. This ligand binds to ss-poly(rA) and poly(rA)-poly(rU) by semi-intercalation and electrostatic modes, but to ss-poly(rU) the prevailing mode is the electrostatic interaction.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Poghos O Vardevanyan
- Department of Biophysics, Faculty of Biology, Yerevan State University, Yerevan, Armenia
| | - Ara P Antonyan
- Department of Biophysics, Faculty of Biology, Yerevan State University, Yerevan, Armenia
| | - Zvart H Movsisyan
- Department of Biophysics, Faculty of Biology, Yerevan State University, Yerevan, Armenia
| | - Marine A Parsadanyan
- Department of Biophysics, Faculty of Biology, Yerevan State University, Yerevan, Armenia
| | - Mariam A Shahinyan
- Department of Biophysics, Faculty of Biology, Yerevan State University, Yerevan, Armenia
| | - Karine R Grigoryan
- Laboratory of Physical Chemistry, Research Institute of Chemistry, Yerevan State University, Yerevan, Armenia
| | - Hasmik A Shilajyan
- Laboratory of Physical Chemistry, Research Institute of Chemistry, Yerevan State University, Yerevan, Armenia
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Piksa M, Lian C, Samuel IC, Pawlik KJ, Samuel IDW, Matczyszyn K. The role of the light source in antimicrobial photodynamic therapy. Chem Soc Rev 2023; 52:1697-1722. [PMID: 36779328 DOI: 10.1039/d0cs01051k] [Citation(s) in RCA: 66] [Impact Index Per Article: 66.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Antimicrobial photodynamic therapy (APDT) is a promising approach to fight the growing problem of antimicrobial resistance that threatens health care, food security and agriculture. APDT uses light to excite a light-activated chemical (photosensitiser), leading to the generation of reactive oxygen species (ROS). Many APDT studies confirm its efficacy in vitro and in vivo against bacteria, fungi, viruses and parasites. However, the development of the field is focused on exploring potential targets and developing new photosensitisers. The role of light, a crucial element for ROS production, has been neglected. What are the main parameters essential for effective photosensitiser activation? Does an optimal light radiant exposure exist? And finally, which light source is best? Many reports have described the promising antibacterial effects of APDT in vitro, however, its application in vivo, especially in clinical settings remains very limited. The restricted availability may partially be due to a lack of standard conditions or protocols, arising from the diversity of selected photosensitising agents (PS), variable testing conditions including light sources used for PS activation and methods of measuring anti-bacterial activity and their effectiveness in treating bacterial infections. We thus sought to systematically review and examine the evidence from existing studies on APDT associated with the light source used. We show how the reduction of pathogens depends on the light source applied, radiant exposure and irradiance of light used, and type of pathogen, and so critically appraise the current state of development of APDT and areas to be addressed in future studies. We anticipate that further standardisation of the experimental conditions will help the field advance, and suggest key optical and biological parameters that should be reported in all APDT studies. More in vivo and clinical studies are needed and are expected to be facilitated by advances in light sources, leading to APDT becoming a sustainable, alternative therapeutic option for bacterial and other microbial infections in the future.
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Affiliation(s)
- Marta Piksa
- Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Science, Weigla 12, 53-114, Wroclaw, Poland
| | - Cheng Lian
- Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St Andrews, Fife, KY16 9SS, UK.
| | - Imogen C Samuel
- School of Medicine, University of Manchester, Manchester, M13 9PL, UK
| | - Krzysztof J Pawlik
- Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Science, Weigla 12, 53-114, Wroclaw, Poland
| | - Ifor D W Samuel
- Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St Andrews, Fife, KY16 9SS, UK.
| | - Katarzyna Matczyszyn
- Institute of Advanced Materials, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland.
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L Torad N, Tsuji Y, Alowasheeir A, Momotake M, Okazawa K, Yoshizawa K, Matsumoto M, Yamato M, Yamauchi Y, Eguchi M. Extraordinary Acceleration of an Electrophilic Reaction Driven by the Polar Surface of 2D Aluminosilicate Nanosheets. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2205857. [PMID: 36623935 DOI: 10.1002/smll.202205857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 11/11/2022] [Indexed: 06/17/2023]
Abstract
To increase chemical reaction rates, general solutions include increasing the concentration/temperature and introducing catalysts. In this study, the rate constant of an electrophilic metal coordination reaction is accelerated 23-fold on the surface of layered aluminosilicate (LAS), where the reaction substrate (ligand molecule) induces dielectric polarization owing to the polar and anionic surface. According to the Arrhenius plot, the frequency factor (A) is increased by almost three orders of magnitude on the surface. This leads to the conclusion that the collision efficiency between the ligands and metal ions is enhanced on the surface due to the dielectric polarization. This is surprising because one side of the ligand is obscured by the surface, so the collision efficiency is expected to be decreased. This unique method to accelerate the chemical reaction is expected to expand the range of utilization of LASs, which are chemically inert, abundant, and environmentally friendly. The concept is also applicable to other metal oxides which have polar surfaces, which will be useful for various chemical reactions in the future.
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Affiliation(s)
- Nagy L Torad
- International Center for Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
- JST-ERATO Yamauchi Materials Space-Tectonics Project, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
- Chemistry Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Yuta Tsuji
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, 819-0395, Fukuoka, Japan
- Faculty of Engineering Sciences, Kyushu University, 6-1, Kasuga-koen, Kasuga, 816-8580, Fukuoka, Japan
| | - Azhar Alowasheeir
- International Center for Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Masako Momotake
- International Center for Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Kazuki Okazawa
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, 819-0395, Fukuoka, Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, 819-0395, Fukuoka, Japan
| | - Michio Matsumoto
- International Center for Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Masafumi Yamato
- Department of Applied Chemistry for Environment, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, 192-0397, Tokyo, Japan
| | - Yusuke Yamauchi
- International Center for Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
- JST-ERATO Yamauchi Materials Space-Tectonics Project, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
- Australian Institute for Bioengineering and Nanotechnology (AIBN) and School of Chemical Engineering, The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Miharu Eguchi
- International Center for Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
- JST-ERATO Yamauchi Materials Space-Tectonics Project, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
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11
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Wani HA, Shaikh VR, More DH, Patil KJ. Applications of spectroscopic techniques to the study of monomer-dimer equilibria for methylene blue in aqueous solutions containing ionic liquid: Probing the structural interactions involving water and ionic liquids. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 287:122058. [PMID: 36347164 DOI: 10.1016/j.saa.2022.122058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 10/08/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
An understanding of the nature of interaction and bonding in dye aggregation process is important for such diverse problems and applications such as stacking interactions in biomolecules, staining properties, photodynamic therapy for cancer, energy transfer in lasing technology and energy transfer and electron transfer processes. In present communication we report visible absorption spectrums and their analysis for the dye methylene blue (MB) in concentration range of 1∙10-6 - 1∙10-4 M in aqueous solutions containing ionic liquids namely, 1-ethyl-3-methyl-imidazolium bromide, 1-butyl-3-methyl-imidazolium bromide and 1-hexyl-3-methyl-imidazolium bromide at 298 ± 1. In this concentration range of MB only Monomer ⇌ Dimer equilibria for the dye exist and hence the spectral characteristics in the visible range of 550-700 nm have been examined. The spectrums obtained are compared with those obtained in aqueous solutions of NaCl. Using suitable developed method of estimating molar absorption extinction coefficient values, the equilibrium constant values are obtained at various ionic strengths of imidazolium ions. It has been found that monomer and dimer absorption maximum occur at 665 and ≈605/610 nm, respectively, do not get much altered on addition of imidazolium ions. The extent of interaction between the MB and imidazolium cations varies with the concentration of imidazolium cations as well as the nature of imidazolium cations, that is, the chain length of the substituents. The dimer dissociation constant values extrapolated to zero ionic strength of ionic liquids exhibit systematic alteration with respect to alteration of chain length in imidazolium cations. The different interactional phenomena such as the formation of ion-pairs, ion-pair complexes, dimer dissociation, solubilization of monomers and binding of MB with imidazolium cations have been examined. The transfer standard free energy changes have been calculated for the transfer of dimers from aqueous solutions to aqueous solutions containing ionic liquids. The changes in dimer geometry from sandwich type and end-on-end types also have been studied. It is observed that the contribution to the interaction energy is mainly from van der Waals type and dispersion forces, in addition to short range forces involving multipoles. The binding of monomers with imidazolium cations is also examined in terms of formation of micellar type aggregates in solution phase. It is proposed that the water structural interaction and hydrophobic interactions are the major factors in the formation and dissociation of aggregates.
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Affiliation(s)
- Hemlata A Wani
- School of Chemical Sciences, Kavayitri Bahinabai Chaudhari North Maharashtra University, Jalgaon 425001, Maharashtra, India
| | - Vasim R Shaikh
- School of Chemical Sciences, K. C. E. Society's Moolji Jaitha College (Autonomous), Jalgaon 425001, Maharashtra, India
| | - Dhananjay H More
- School of Chemical Sciences, Kavayitri Bahinabai Chaudhari North Maharashtra University, Jalgaon 425001, Maharashtra, India
| | - Kesharsingh J Patil
- School of Chemical Sciences, Kavayitri Bahinabai Chaudhari North Maharashtra University, Jalgaon 425001, Maharashtra, India
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12
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Shahi N, Kumar Shah S, Prasad Yadav A, Bhattarai A. Micellization pattern of cationic surfactants in presence of azo dye in methanol mixed media. RESULTS IN CHEMISTRY 2023. [DOI: 10.1016/j.rechem.2023.100906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023] Open
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13
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Apostolina LP, Bosveli A, Profyllidou A, Montagnon T, Tsopanakis V, Kaloumenou M, Kalaitzakis D, Vassilikogiannakis G. Multiphotocatalyst Cascades: From Furans to Fused Butyrolactones and Substituted Cyclopentanones. Org Lett 2022; 24:8786-8790. [PMID: 36417313 DOI: 10.1021/acs.orglett.2c03513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
High value oxygenated polycycles have been rapidly and efficiently accessed from simple precursors in one pot processes. The reported methodology relies on a new and mild method for butenolide synthesis mediated by thiols. The initial photooxygenation and butenolide synthesis have been merged with subsequent photoredox reactions to achieve rare dual-photocatalyst cascades affording various fused butyrolactones. Ground state Lewis acid activity for methylene blue has been unveiled and then exploited in the synthesis of substituted cyclopentanones.
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Affiliation(s)
| | - Artemis Bosveli
- Department of Chemistry, University of Crete, Vasilika Vouton, 71003 Iraklion, Crete, Greece
| | - Antonia Profyllidou
- Department of Chemistry, University of Crete, Vasilika Vouton, 71003 Iraklion, Crete, Greece
| | - Tamsyn Montagnon
- Department of Chemistry, University of Crete, Vasilika Vouton, 71003 Iraklion, Crete, Greece
| | - Vasileios Tsopanakis
- Department of Chemistry, University of Crete, Vasilika Vouton, 71003 Iraklion, Crete, Greece
| | - Maria Kaloumenou
- Department of Chemistry, University of Crete, Vasilika Vouton, 71003 Iraklion, Crete, Greece
| | - Dimitris Kalaitzakis
- Department of Chemistry, University of Crete, Vasilika Vouton, 71003 Iraklion, Crete, Greece
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Applications of
Peristrophe paniculata
Derived Plasmonic Nanoparticles for DNA Binding and Photocatalytic Degradation of Cationic Dyes. ChemistrySelect 2022. [DOI: 10.1002/slct.202202769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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15
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Amjad S, Shaukat S, Muhammad Abd Ur Rahman H, Usman M, Farooqi ZH, Faizan Nazar M. Application of anionic-nonionic mixed micellar system for solubilization of methylene blue dye. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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16
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Fortunato A, Mba M. A Peptide-Based Hydrogel for Adsorption of Dyes and Pharmaceuticals in Water Remediation. Gels 2022; 8:672. [PMID: 36286173 PMCID: PMC9601570 DOI: 10.3390/gels8100672] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/12/2022] [Accepted: 10/17/2022] [Indexed: 08/26/2023] Open
Abstract
The removal of dyes and pharmaceuticals from water has become a major issue in recent years due to the shortage of freshwater resources. The adsorption of these pollutants through nontoxic, easy-to-make, and environmentally friendly adsorbents has become a popular topic. In this work, a tetrapeptide-pyrene conjugate was rationally designed to form hydrogels under controlled acidic conditions. The hydrogels were thoroughly characterized, and their performance in the adsorption of various dyes and pharmaceuticals from water was investigated. The supramolecular hydrogel efficiently adsorbed methylene blue (MB) and diclofenac (DCF) from water. The effect of concentration in the adsorption efficiency was studied, and results indicated that while the adsorption of MB is governed by the availability of adsorption sites, in the case of DCF, concentration is the driving force of the process. In the case of MB, the nature of the dye-hydrogel interactions and the mechanism of the adsorption process were investigated through UV-Vis absorption spectroscopy. The studies proved how this dye is first adsorbed as a monomer, probably through electrostatic interactions; successively, at increasing concentrations as the electrostatic adsorption sites are depleted, dimerization on the hydrogel surface occurs.
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Affiliation(s)
| | - Miriam Mba
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via Marzolo 1, 35131 Padova, Italy
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17
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Studies related to changes in ionic strength due to addition of sodium chloride to an aqueous solution of cationic dye methylene blue (MB): Electronic spectra analysis for dimerization equilibria. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119614] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Ali IO, Salama TM, A. Gawad A, El‐Henawy AA, Ghazy M, Bakr MF. Silver nanoparticles @ titanate nanotubes composite: Synthesis, characterization, applications and docking. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2021.109187] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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19
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Modulated photoluminescence and photodynamic efficiency of hydroxyapatite-methylene blue@carbon-ions by ion-π coupling interactions. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Solar Heterogenous Photocatalytic Degradation of Methylthionine Chloride on a Flat Plate Reactor: Effect of pH and H2O2 Addition. Catalysts 2022. [DOI: 10.3390/catal12020132] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Methylthionine chloride (MTC) is a compound with several applications both in the clinical and medical industries. Nevertheless, such compounds can become an environmental problem, as they are not properly treated by wastewater treatment plants. This objective of this work was to study MTC degradation in a flat plate reactor through solar photolysis and heterogeneous photocatalysis processes with TiO2 as a catalyst. In addition to the processes, three pH (3.5, 6.5, and 9) and the effect of H2O2 addition (no dose, 0.5, and 1 mM/L) were tested. The results show that acidic pH is the most appropriate for MTC degradation, which ranged between 56% and 68.7% for photolysis and between 76% and 86.7% in photocatalysis. The H2O2 addition resulted in lower degradation in all cases, leading the authors to conclude that the presence of peroxide actually hinders degradation in solar photolysis and photocatalysis processes. Statistical analysis showed that the constant rate reactions calculated for every process, under the same conditions of pH and H2O2 addition, are significantly different from one another, and the three factors considered for experimental design (process, pH, and H2O2) have a statistically significant effect on MTC degradation. The collector area per order confirmed higher efficiency for photocatalysis when compared to photolysis processes.
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21
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Digby EM, Ma T, Zipfel WR, Milstein JN, Beharry AA. Highly Potent Photoinactivation of Bacteria Using a Water-Soluble, Cell-Permeable, DNA-Binding Photosensitizer. ACS Infect Dis 2021; 7:3052-3061. [PMID: 34617443 DOI: 10.1021/acsinfecdis.1c00313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Antimicrobial photodynamic therapy (APDT) employs a photosensitizer, light, and molecular oxygen to treat infectious diseases via oxidative damage, with a low likelihood for the development of resistance. For optimal APDT efficacy, photosensitizers with cationic charges that can permeate bacteria cells and bind intracellular targets are desired to not limit oxidative damage to the outer bacterial structure. Here we report the application of brominated DAPI (Br-DAPI), a water-soluble, DNA-binding photosensitizer for the eradication of both Gram-negative and Gram-positive bacteria (as demonstrated on N99 Escherichia coli and Bacillus subtilis, respectively). We observe intracellular uptake of Br-DAPI, ROS-mediated bacterial cell death via one- and two-photon excitation, and selective photocytotoxicity of bacteria over mammalian cells. Photocytotoxicity of both N99 E. coli and B. subtilis occurred at submicromolar concentrations (IC50 = 0.2-0.4 μM) and low light doses (5 min irradiation times, 4.5 J cm-2 dose), making it superior to commonly employed APDT phenothiazinium photosensitizers such as methylene blue. Given its high potency and two-photon excitability, Br-DAPI is a promising novel photosensitizer for in vivo APDT applications.
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Affiliation(s)
- Elyse M. Digby
- Department of Chemical & Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario L5L 1C6, Canada
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Tianyi Ma
- Department of Chemical & Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario L5L 1C6, Canada
- Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario M5S 1A7, Canada
| | - Warren R. Zipfel
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Joshua N. Milstein
- Department of Chemical & Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario L5L 1C6, Canada
- Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario M5S 1A7, Canada
| | - Andrew A. Beharry
- Department of Chemical & Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario L5L 1C6, Canada
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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22
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Tan GR, Hsu CYS, Zhang Y. pH-Responsive Hybrid Nanoparticles for Imaging Spatiotemporal pH Changes in Biofilm-Dentin Microenvironments. ACS APPLIED MATERIALS & INTERFACES 2021; 13:46247-46259. [PMID: 34570460 DOI: 10.1021/acsami.1c11162] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Engineering highly sensitive nanomaterials to monitor spatiotemporal pH changes has rather broad applications in studying various biological systems. Intraoral/biofilm-tooth pH is the single parameter that has demonstrated accurate assessment of dental caries risk, reflecting the summative integrated outcome of the complicated interactions between three etiological factors, namely, microorganisms/biofilm, diet/carbohydrates, and tooth/saliva/host. However, there is little to no technology/system capable of accurately probing simultaneously both the micro-pH profiles in dentin tissues and acidogenic oral biofilms and examining the pathophysiologic acid attacks with high spatial/temporal resolution. Therefore, a highly sensitive pH-responsive hybrid nanoparticle (pH-NP) is developed and coupled with an ex vivo tooth-biofilm caries model to simulate and study the key cariogenic determinants/steps. The pH-NP emits two distinct fluorescences with mutually inversely proportional intensities that vary accordingly to the proximity pH and with a ratiometric output sensitivity of 13.4-fold across a broad clinically relevant pH range of 3.0-8.0. Using [H+], in addition to pH, to calculate the "area-under-curve" corroborates the "minimum-pH" in semiquantifying the demineralizing potential in each biofilm-dentin zones/depth. The data mechanistically elucidates a two-pronged cariogenic effect of a popular-acidic-sweet-drink, in inundating the biofilm/tooth-system with H+ ions from both the drink and the metabolic byproducts of the biofilm.
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Affiliation(s)
- Guang-Rong Tan
- Faculty of Dentistry, National University of Singapore, 9 Lower Kent Ridge Road, Singapore 119085, Singapore
| | - Chin-Ying Stephen Hsu
- Faculty of Dentistry, National University of Singapore, 9 Lower Kent Ridge Road, Singapore 119085, Singapore
| | - Yong Zhang
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, Singapore 117583, Singapore
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23
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Spectrophotometric study of the sodium dodecyl sulfate in the presence of methylene blue in the methanol–water mixed solvent system. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117200] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Increased photoluminescence and photodynamic therapy efficiency of hydroxyapatite-β-cyclodextrin-methylene blue@carbon powders with the favor of hydrogen bonding effect. Photochem Photobiol Sci 2021; 20:1323-1331. [PMID: 34562235 DOI: 10.1007/s43630-021-00109-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 09/16/2021] [Indexed: 10/20/2022]
Abstract
To meet the requirements of theranostics with diagnosis and treatment, photodynamic-based therapy is simultaneously enabled with the incorporation of methylene blue (MB) as imaging agent and photosensitizer in core-shell structured drug vehicles. Citrate-modified hydroxyapatite (HAp) powders are first grafted with β-cyclodextrin (CD), then combined with MB molecules through electrostatic interactions, and finally encapsulated with carbon shells through hydro-thermal carbonization of glucose to prepare HAp-CD-MB@C powders. Processing parameters of carbonization temperature, glucose addition, reaction time and CD addition are varied to prepare drug carriers with modulated crystallite degrees and photo-physical properties. Increased crystallite sizes of HAp are accompanied with the formation of C=O, C=C and C-OH groups in carbon shell, endowing sustainable release behaviors of MB through carbonous structures. High photoluminescence intensities are fairly related with red-shifted vibration peaks of groups in tightly combined MB molecules through hydrogen bonds. This hydrogen bonding effect is significantly increased for HAp-CD-MB@C140 with the splitting of CH3-involved vibration peaks in infrared spectra, which causes increase in photoluminescence intensity and four-fold increase in generation ratio of singlet oxygen. The present studies shed light on preparation of core-shell structured drug carriers, modulation of aggregate states of MB molecules, enhancement of photo-physical properties and improvement of generation ratio of singlet oxygen during photodynamic-based therapy.
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Šimonová Baranyaiová T, Mészáros R, Sebechlebská T, Bujdák J. Non-Arrhenius kinetics and slowed-diffusion mechanism of molecular aggregation of a rhodamine dye on colloidal particles. Phys Chem Chem Phys 2021; 23:17177-17185. [PMID: 34346441 DOI: 10.1039/d1cp02762j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The non-covalent association is important for many fields of science, including processes in living systems. This work elucidates the mechanism of rhodamine 123 molecular aggregation in dispersions of a layered silicate and explains the mystery of the slow kinetics of this process. Chemometric analysis of thousands of spectra recorded by stopped-flow visible spectroscopy identified two parallel diffusion processes described by a two-phase exponential function. The slow and fast processes followed the super-Arrhenius kinetics and were assigned to lateral (surface) diffusion and inter-particle diffusion of dye cations, respectively. This work, supported by a large amount of data and their in-depth analysis, provides the first evidence of how these processes coexist together and provides quantitative analysis of their dependence on the reaction conditions. The implications of this work can be crucial for understanding the mechanism of the non-covalent association of adsorbed molecules in nature.
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Affiliation(s)
- Tímea Šimonová Baranyaiová
- Department of Hydrosilicates, Institute of Inorganic Chemistry, Slovak Academy of Sciences, 845 36 Bratislava, Slovakia.
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Kostjukova LO, Leontieva SV, Kostjukov VV. Vibronic absorption spectrum and electronic properties of methylene blue in aqueous solution: TD-DFT study. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116369] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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27
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Su L, Zhang H, Oh K, Liu N, Luo Y, Cheng H, Zhang G, He X. Activated biochar derived from spent Auricularia auricula substrate for the efficient adsorption of cationic azo dyes from single and binary adsorptive systems. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2021; 84:101-121. [PMID: 34280158 DOI: 10.2166/wst.2021.222] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this study, spent Auricularia auricula substrate (AS)-derived biochar (ASBCs) and activated biochar with NaOH (A-ASBC) were evaluated for the adsorption of cationic azo dyes, including methylene blue (MB), rhodamine B (RB), and crystal violet (CV), from single and binary adsorptive systems. A-ASBC showed a higher maximum adsorption capacity for these dyes (MB: 53.62 mg·g-1, RB: 32.33 mg·g-1, CV: 735.73 mg·g-1) than ASBCs in a single system because it had a greater specific surface area and more oxygen containing-functional groups on the surface. The adsorption process of the three dyes onto the adsorbents was in good agreement with the Freundlich adsorption isotherm and fit the pseudo-second-order kinetic model, which revealed sorbate polymolecular layer formation over the adsorbent surface and the involvement of chemisorption. The adsorption mechanism showed that the adsorption of three dyes on adsorbents could be postulated as a multistep process with extraordinary affinity-induced adsorption in terms of both physisorption and chemisorption. In the binary adsorptive system, the results showed that all MB, RB, and CV had antagonistic/competitive effects on each other's adsorption (QBinary/QSingle < 1). Furthermore, a phytotoxic assay affirmed the effectiveness of the adsorbent in adsorbing dye species from aqueous solutions using Brassica pekinensis L. seeds as the model. Therefore, activated biochar prepared from AS can be used as a potentially economical and effective adsorbent for treating printing and dyeing wastewater.
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Affiliation(s)
- Long Su
- College of Resources and Environment, Shanxi Agricultural University, Shanxi Taigu 030801, China
| | - Haibo Zhang
- College of Resources and Environment, Shanxi Agricultural University, Shanxi Taigu 030801, China
| | - Kokyo Oh
- Center for Environmental Science in Saitama, Kazo City, Saitama 347-0115, Japan
| | - Na Liu
- College of Resources and Environment, Shanxi Agricultural University, Shanxi Taigu 030801, China
| | - Yuan Luo
- College of Resources and Environment, Shanxi Agricultural University, Shanxi Taigu 030801, China
| | - Hongyan Cheng
- College of Resources and Environment, Shanxi Agricultural University, Shanxi Taigu 030801, China
| | - Guosheng Zhang
- College of Resources and Environment, Shanxi Agricultural University, Shanxi Taigu 030801, China
| | - Xiaofang He
- College of Resources and Environment, Shanxi Agricultural University, Shanxi Taigu 030801, China
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Eguchi M, Nugraha AS, Rowan AE, Shapter J, Yamauchi Y. Adsorchromism: Molecular Nanoarchitectonics at 2D Nanosheets-Old Chemistry for Advanced Chromism. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2100539. [PMID: 34306979 PMCID: PMC8292911 DOI: 10.1002/advs.202100539] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Indexed: 05/11/2023]
Abstract
Chromism induced by changes in the electronic states of dye molecules due to surface adsorption is termed "adsorchromism" in this article. These changes of molecular electronic states are induced by protonation, aggregation, intramolecular structural changes, and other processes, depending on the surface environment. Intramolecular structural changes, such as co-planarization and decreased molecular motion are the most characteristic and interesting behavior of dye molecules at the surfaces, resulting in spectral shift and/or emission enhancement. In this review, adsorchromism at the surfaces of layered materials are summarized since their flexibility of interlayer distance, surface flatness, and transparency is suitable for a detailed observation. By understanding the relationship between adsorchromism and the electronic states of molecules on the surfaces, it will be possible to induce some desired functions which can be realized simply by adsorption, instead of complicated organic syntheses. Thus, adsorchromism has potential applications such as effective solar energy harvesting systems, or biological/chemical sensors to visualize environmental changes.
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Affiliation(s)
- Miharu Eguchi
- International Center for Materials Nanoarchitectonics (WPI‐MANA)National Institute for Materials Science1‐1 NamikiTsukubaIbaraki305‐0044Japan
- Australian Institute for Bioengineering and Nanotechnology (AIBN)The University of QueenslandBrisbaneQLD4072Australia
- JST‐ERATO Yamauchi Materials Space‐Tectonics ProjectNational Institute for Materials Science (NIMS)1‐1 NamikiTsukubaIbaraki305‐0044Japan
| | - Asep Sugih Nugraha
- Australian Institute for Bioengineering and Nanotechnology (AIBN)The University of QueenslandBrisbaneQLD4072Australia
| | - Alan E. Rowan
- Australian Institute for Bioengineering and Nanotechnology (AIBN)The University of QueenslandBrisbaneQLD4072Australia
| | - Joe Shapter
- Australian Institute for Bioengineering and Nanotechnology (AIBN)The University of QueenslandBrisbaneQLD4072Australia
| | - Yusuke Yamauchi
- Australian Institute for Bioengineering and Nanotechnology (AIBN)The University of QueenslandBrisbaneQLD4072Australia
- JST‐ERATO Yamauchi Materials Space‐Tectonics ProjectNational Institute for Materials Science (NIMS)1‐1 NamikiTsukubaIbaraki305‐0044Japan
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Co-Encapsulation of Methylene Blue and PARP-Inhibitor into Poly(Lactic-Co-Glycolic Acid) Nanoparticles for Enhanced PDT of Cancer. NANOMATERIALS 2021; 11:nano11061514. [PMID: 34201069 PMCID: PMC8227603 DOI: 10.3390/nano11061514] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/16/2021] [Accepted: 03/22/2021] [Indexed: 12/12/2022]
Abstract
The development of resistance against photodamage triggered by photodynamic therapy (PDT) is ascribed mainly to the cellular redox defenses and repair. If the tumor tissue is not promptly eliminated by the first few PDT sessions, PDT-resistance can be favored, challenging the efficacy of the treatment. Although the mechanism of PDT resistance is still unclear, in vitro assays have evidenced that it can be developed through the PARP damage-repair signaling pathway. Therefore, inhibition of poly(adenosine diphosphate (ADP)-ribose) polymerase (PARP) has the potential to increase PDT efficacy. This work reports on the synthesis of a controlled release system of a photosensitizer, methylene blue (MB) and a PARP-inhibitor, the veliparib. MB and veliparib were co-encapsulated in poly(lactic-co-glycolic acid) (PLGA) nanoparticles (VMB-NPs). A colloidal stable aqueous suspension of nanoparticles was obtained. The average hydrodynamic diameter was 90 nm and a narrow size distribution was obtained, with a polydispersity index (PDI) of 0.08. The release kinetics of MB and veliparib from VMB-NPs showed an initial burst of 8.7% and 58.3% release of the total amounts of MB and veliparib respectively, in the first 6 h, and a delayed release of up to 11.3% and 70%, in 19 days, for MB and veliparib, respectively. The VMB-NPs showed no cytotoxicity in the dark but the viability of B16F10-Nex2 cells decreased by 36% when the cells were irradiated (102 J/cm2, 660 nm) and treated with VMB-NPs containing 1.0 µM of MB and 8.3 µM of veliparib. Considering the increased photoactivity even at low MB and veliparib concentrations and the absence of cytotoxicity in dark, the co-encapsulation of MB and veliparib was shown to be a promising strategy to improve the PDT efficacy.
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Enhanced photophysical properties of silica-methylene blue@amorphous carbon as fluorochromes with modulated Raman-active vibration modes. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.112987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Kumar V, Pandey S, Behera K. Aggregation behavior of a model carbocyanine dye: Polar organic solvent versus ionic liquid mixture. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114985] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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32
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Narayanam PK, Major S. Langmuir-Blodgett based growth of rGO wrapped TiO2 nanostructures and their photocatalytic performance. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125652] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Improved adsorption and photocatalytic removal of methylene blue by MoO3 thin films: Role of the sputtering power, film thickness, and sputtering working pressure. Catal Today 2021. [DOI: 10.1016/j.cattod.2019.06.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Physicochemical Studies on the Interaction between Sodium Dodecyl Sulfate and Methylene Blue in Methanol-Water Mixed Solvent Media. J CHEM-NY 2020. [DOI: 10.1155/2020/5292385] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The surface activity and the process of micellization of sodium dodecyl sulfate (SDS) with methylene blue (MB) in a methanol-water mixed solvent system were investigated by tensiometry and conductometry at 298.15 K. The measurements of surface tension and conductivity of SDS-MB complex were carried up to 0.3 volume fractions of methanol because the resulting complex appeared turbid above 0.3 volume fractions of methanol. The critical micelle concentration (CMC) of the SDS was determined from both tensiometry and conductometry. The CMC of SDS increased with the increasing volume fraction of methanol due to the inclusion of methanol in the micelles and decreased in the presence of methylene blue due to the reduction of electrostatic repulsion within the anionic moiety of SDS by the positive charge of the added dye. Different properties like surface excess concentration
, minimum surface area
, Gibbs free energy of micellization
, surface pressure (
), efficiency of a surfactant (
), packing parameter
, and standard free energy interfacial adsorption
of SDS in the absence/presence of MB were calculated. On the basis of
values, it was noticed that the increasing volume fraction of methanol disfavors the micellization of SDS, while the presence of MB increased the efficiency of SDS making the micellization process more spontaneous.
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Fernández-Pérez A, Marbán G. Visible Light Spectroscopic Analysis of Methylene Blue in Water; What Comes after Dimer? ACS OMEGA 2020; 5:29801-29815. [PMID: 33251415 PMCID: PMC7689667 DOI: 10.1021/acsomega.0c03830] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 10/15/2020] [Indexed: 05/10/2023]
Abstract
As in our previous work, most attempts to study the self-aggregation of methylene blue (MB) in water have been limited to the dimer. In the present work, we have analyzed the self-aggregation of MB in water beyond the dimeric form. For this purpose, the visible light absorption spectra of a large number of aqueous solutions of MB (1.1 × 10-6 to 3.4 × 10-3 M) and NaCl (0.0-0.15 M) at different temperatures (282-333 K) have been fed to a mathematical routine in order to determine the potential existence of a unique higher-order aggregate without any preconception about the aggregation order or about the need of counterions, such as chloride, for compensating the positive charge of the aggregates. Contrary to the common belief that the trimer is the dominant aggregate at high MB concentration, to our surprise we found that the tetramer acting alone, and without any counterion, is the higher-order aggregate that yields the best fitting to all the experimental absorbance spectra, with a very low average relative error of 0.04 ± 0.34%. Also contrary to previous assumptions, it has emerged quite evidently that this aggregate is present in the solution at MB concentrations below 3.4 × 10-5 M (11 ppm), though to a rather low extent. This has brought the need for the recalculation of the visible light absorption spectrum and the thermodynamic parameters for the dimer, which along with those for the tetramer are the main contributions of the present work.
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Veljović DN, Gurešić DM, Jokić AB, Vasić VM, Laban BB. Solid‐State Synthesis of Silver Nanoparticles and Their Catalytic Application in Methylene Blue Reduction. ChemistrySelect 2020. [DOI: 10.1002/slct.202001829] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Djordje N. Veljović
- Faculty of Technology and Metallurgy University of Belgrade Karnegijeva 4 11000 Belgrade Serbia
| | - Dejan M. Gurešić
- Faculty of Technical Sciences University of Priština, Knjaza Miloša 7 38220 Kosovska Mitrovica Serbia
| | - Anja B. Jokić
- Faculty of Sciences, University of Priština-Kosovska Mitrovica Department of Chemistry, 38220 Kosovska Mitrovica, Serbia Lole Ribara 29 38220 Kosovska Mitrovica Serbia
| | - Vesna M. Vasić
- Vinča Institute of Nuclear Sciences University of Belgrade P.O. Box 522 Belgrade Serbia
| | - Bojana B. Laban
- Faculty of Sciences, University of Priština-Kosovska Mitrovica Department of Chemistry, 38220 Kosovska Mitrovica, Serbia Lole Ribara 29 38220 Kosovska Mitrovica Serbia
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Tetracycline Photocatalytic Degradation under CdS Treatment. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2020. [DOI: 10.3390/jmse8070483] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Industrialization and the growing consumption of medicines leads to global aquatic contamination. One of the antibiotics widely used against bacterial infections in both human and veterinary medicine is tetracycline. Despite its positive antibiotic action, tetracycline is resistant against degradation, and therefore it accumulates in the environment, including the aquatic environment, creating great health hazards, possibly stimulating antibiotic resistance of pathogenic organisms. In this research, aqueous suspensions of semiconductor nanoparticles CdS were used for photocatalytic activity studies in the presence of methylene blue as a model compound, and finally, in the presence of tetracycline, a broad-spectrum antibiotic widely used against bacterial infections, as well as a live-stock food additive. The mechanism and kinetic rate constants of photocatalytic degradation processes of methylene blue and tetracycline were described in correlation with the energy diagram of CdS nanoparticles.
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Yamaguchi S, Minbuta S, Matsui K. Adsorption of the Cationic Dye Methylene Blue on Anodic Porous Alumina in Sodium Dodecyl Sulfate Solutions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:4592-4599. [PMID: 32320252 DOI: 10.1021/acs.langmuir.0c00182] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Dyeing of anodic porous alumina (APA) prepared by aluminum anodization is generally achieved by dipping the positively charged APA surface into a negatively charged dye solution. We have proposed a new method to adsorb dyes and molecules onto APA using negatively charged sodium dodecyl sulfate (SDS). In this study, we found that cationic methylene blue (MB) can be adsorbed onto the positively charged APA surface using SDS aqueous solutions. We investigated two adsorption methods: dipping APA into aqueous solutions containing both MB and SDS (method 1) and successive dipping of APA into SDS and then MB aqueous solutions (method 2). The two methods produced different adsorption characteristics. Method 1 adsorption profile reflected formation of dye-rich induced micelles below the critical micellar concentration (CMC) and electrostatic interaction of micelles with MB above CMC. Method 2 adsorption was explained by electrostatic interaction of preadsorbed SDS with APA and MB.
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Affiliation(s)
- Shohei Yamaguchi
- Institute of Science and Technology, Kanto Gakuin University, 1-50-1, Mutsuurahigashi, Yokohama 236-8501, Japan
| | - Satoshi Minbuta
- Graduate School of Engineering, Kanto Gakuin University, 1-50-1, Mutsuurahigashi, Yokohama 236-8501, Japan
| | - Kazunori Matsui
- Graduate School of Engineering, Kanto Gakuin University, 1-50-1, Mutsuurahigashi, Yokohama 236-8501, Japan
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Alves da Collina G, Freire F, da Silva Barbosa V, Bento Correa C, Reis Nascimento H, Ratto Tempestini Horliana AC, Teixeira da Silva DDF, Araujo Prates R, Pavani C. Photodynamic antimicrobial chemotherapy action of phenothiazinium dyes in planktonic Candida albicans is increased in sodium dodecyl sulfate. Photodiagnosis Photodyn Ther 2020; 29:101612. [DOI: 10.1016/j.pdpdt.2019.101612] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 11/19/2019] [Accepted: 12/02/2019] [Indexed: 12/18/2022]
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40
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Wang C, Rosenfeldt E, Li Y, Hofmann R. External Standard Calibration Method To Measure the Hydroxyl Radical Scavenging Capacity of Water Samples. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:1929-1937. [PMID: 31880146 DOI: 10.1021/acs.est.9b06273] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The hydroxyl radical (•OH) scavenging capacity is a useful parameter for the design and operation of an advanced oxidation process (AOP) in water treatment. The scavenging capacity may change with time, and it would be useful to continuously measure this change to be able to optimize AOP doses. In this study, we first reviewed current methods for scavenging capacity measurement to identify strengths and weaknesses of each method. This information helped guide the design of an external calibration method to allow straightforward laboratory and field measurement of •OH scavenging capacity. The method used low-pressure UV/H2O2 as the •OH generation system, methylene blue (MB) as the probe compound, and isopropyl alcohol (IPA) as the standard. By monitoring, offline, the color decay of MB in a series of IPA solutions with different scavenging capacity, a calibration curve was established between the color decay rate and the scavenging capacity. The measured color decay in real water samples can then be used with this external calibration to estimate their scavenging capacity. Work was undertaken to ensure that the process would be robust under a wide range of water quality conditions. Parallel tests using this method compared with the benchmark methods confirmed its robustness and accuracy.
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Affiliation(s)
- Chengjin Wang
- Department of Civil and Mineral Engineering , University of Toronto , 35 St. George Street , Toronto , Ontario M5S 1A4 , Canada
| | - Erik Rosenfeldt
- Hazen and Sawyer , 1555 Roseneath Road , Richmond , Virginia 23230 , United States
| | - Yi Li
- Department of Civil and Mineral Engineering , University of Toronto , 35 St. George Street , Toronto , Ontario M5S 1A4 , Canada
| | - Ron Hofmann
- Department of Civil and Mineral Engineering , University of Toronto , 35 St. George Street , Toronto , Ontario M5S 1A4 , Canada
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41
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Fujisawa JI, Murai K, Hanaya M. Photoinduced H-aggregation of cationic dyes on metal-oxide surfaces via light activated molecular migration. Chem Commun (Camb) 2019; 55:14641-14644. [PMID: 31746847 DOI: 10.1039/c9cc05951b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Molecular transport by use of light energy is a new photofunction for light powered molecular carriers and light induced nano-structure formation on a substrate. However, this research field has not been cultivated yet. In order to understand the basic mechanism and potentialities, experimental observations of photoactivated molecular migration and its functions in various systems are required. Here, we report visible light induced H-aggregation of cationic dyes (methylene blue and toluidine blue) on metal-oxide surfaces (TiO2 and ZnO) via photoactivated surface migration of these dyes. Our research widely expands the scope of photoinduced surface molecular migration to the conventional dyes and metal-oxide surfaces, and also demonstrates that the photoinduced molecular assembly provides a photochromic function. It is noteworthy that high aggregates, which are difficult to form in the dark, can be formed by the photoinduced surface migration of excited dyes.
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Affiliation(s)
- Jun-Ichi Fujisawa
- Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
| | - Karin Murai
- Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
| | - Minoru Hanaya
- Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
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42
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Photo-curing kinetics of hydroxyethyl acrylate (HEA): synergetic effect of dye/amine photoinitiator systems. INTERNATIONAL JOURNAL OF INDUSTRIAL CHEMISTRY 2019. [DOI: 10.1007/s40090-019-00197-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AbstractThe aim of this study is to examine and evaluate several dye/amine systems as photoinitiators for photopolymerization of 2-hydroxyethyl acrylate (HEA) monomer under visible light conditions. For this purpose, a series of dye/amine photoinitiators were formed using methylene blue (MB) or acridine orange (AO) as photosensitizers, and triethanolamine (TEOA), ethyl 4-(dimethylamino) benzoate (EDMAB), trioctylamine (TOA), and N,N-diméthylallylamine (DMAA) as co-initiators. The photopolymerization kinetic of the HEA monomer in the presence of proposed dye/amine systems was performed using Fourier-transform infrared spectroscopy (FTIR) analysis and the synergetic effect of the dye/amine photoinitiators systems on the photopolymerization efficiency was examined. Interestingly, (MB/EDMAB) system shows the better reactivity with a total conversion of HEA monomer.
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43
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Zhang W, Zhang G, Wang W, Sun H, Du Q, Li X, Ge X, Li C. Modulation of release mechanisms of methylene blue (MB) monomers and dimers from silica-MB@shellac synthesized by antisolvent crystallization. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 107:110309. [PMID: 31761185 DOI: 10.1016/j.msec.2019.110309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 10/02/2019] [Accepted: 10/11/2019] [Indexed: 12/01/2022]
Abstract
Release behaviors of drugs from drug deliveries are crucial for the enhancement of therapy efficiency, reduction of toxicity and patient compliance. Herein, antisolvent crystallization is employed to coat methlyene blue (MB)-loaded silica by shellac precipitation (silica-MB@shellac), which is simultaneously induced by outward diffusion of H+ ions from particular silica-MB. The encapsulation of shellac shell on silica-MB modulates the aggregation state of MB, which endows silica-MB@shellac a decreased MB's thermal stability, enhanced photoluminescence intensity, improved stability against in vitro reduction by ascorbic acid and retained photodynamic therapy activity. From the absorbance of MB supernatant obtained during incubation, the concentrations of MB monomers and dimers are determined via a non-linear regression analysis to investigate the influence of shellac coating on MB's release mechanisms from silica-MB@shellac. According to the simulated models, small diffusion constants of MB are caused by limited diffusion through shellac shells with high compaction degrees. These are observed for samples synthesized under high supersaturation degree during antisolvent crystallization. High degree of supersaturation is achieved through increasing shellac concentration, additive amount and dropping rate of antisolvent, as well as decreasing pH values of aqueous buffers as antisolvent. Furthermore, a combined mechanism of Fickian diffusion and Case-IΙ relaxation is proposed to describe the release behaviors of MB monomer and dimers from silica-MB@shellac. Therefore, this work may shed light on the encapsulation method of polymer on drug-loaded powders and the control of aggregation states of photosensitizers to promote the photoluminescence intensity, photodynamic therapy efficiency and controlled release behaviors.
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Affiliation(s)
- Wei Zhang
- School of Materials Science and Engineering, Shandong University of Technology, 255049, Shandong, PR China
| | - Guangli Zhang
- School of Materials Science and Engineering, Shandong University of Technology, 255049, Shandong, PR China
| | - Wenhao Wang
- School of Materials Science and Engineering, Shandong University of Technology, 255049, Shandong, PR China
| | - Haibin Sun
- School of Materials Science and Engineering, Shandong University of Technology, 255049, Shandong, PR China
| | - Qingyang Du
- School of Materials Science and Engineering, Shandong University of Technology, 255049, Shandong, PR China
| | - Xiaowei Li
- School of Materials Science and Engineering, Shandong University of Technology, 255049, Shandong, PR China
| | - Xiaolu Ge
- School of Physics and Optoelectronic Engineering, Shandong University of Technology, 255049, PR China
| | - Chengfeng Li
- School of Materials Science and Engineering, Shandong University of Technology, 255049, Shandong, PR China.
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44
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The transition from locally excited states to twisted intramolecular charge transfer states for fluorescence methylene blue labeled in biodegradable silica particles. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111312] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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45
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Methylene Blue Adsorption Study on Microcline Particles in the Function of Particle Size Range and Temperature. MINERALS 2019. [DOI: 10.3390/min9090555] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In this paper, the adsorption process of methylene blue has been investigated on microcline particles as a function of particle size and temperature. The characterization of microcline in the particle size ranges of 1−71 μm and 71−315 μm gained by sieving was proved using X-ray diffraction (XRD) and scanning electron microscopy combined with energy-dispersive detector (SEM-EDS) in powder form, over laser diffraction measurements in aqueous suspension. The optimum dosage of adsorbent was 13.5 g/L in dye adsorption and the adsorption isotherms on both microcline size fractions were determined at this adsorbent concentration. The maximum adsorption capacities were in the range of 1.5–3.1 mg g−1 on microcline particles with supplementing evaluation of isotherms using the Langmuir model. Considering the problems of linearization of equations, the non-linear least-squares estimation can be strongly recommended for modeling adsorption-equilibrium. The adsorption isotherm determined at elevated temperature of 60−65 °C represents a breakpoint at around 20 mg L−1 of equilibrated dye concentration due to performing of a potential process of dye self-association. According to our experiments, the increase in temperature has an adverse effect on adsorption.
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46
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Nassar SJM, Wills C, Harriman A. Inhibition of the Photobleaching of Methylene Blue by Association with Urea. CHEMPHOTOCHEM 2019. [DOI: 10.1002/cptc.201900141] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Sulafa Jamal M. Nassar
- Molecular Photonics Laboratory, SNES- ChemistryNewcastle University Newcastle upon Tyne NE1 7RU UK
| | - Corinne Wills
- NMR Laboratory School of Natural and Environmental ScienceNewcastle University Newcastle upon Tyne NE1 7RU UK
| | - Anthony Harriman
- Molecular Photonics Laboratory, SNES- ChemistryNewcastle University Newcastle upon Tyne NE1 7RU UK
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Singh N, Kumar P, Kumar R, Riaz U. Ultrasound-Assisted Polymerization of Dyes with Phenylenediamines: Facile Method To Design Polymeric Photosensitizers with Enhanced Singlet Oxygen Generation Characteristics and Anticancer Activity. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b01275] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Neetika Singh
- Materials Research Laboratory Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
| | | | | | - Ufana Riaz
- Materials Research Laboratory Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
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48
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Haouzi P, McCann M, Tubbs N, Judenherc-Haouzi A, Cheung J, Bouillaud F. Antidotal Effects of the Phenothiazine Chromophore Methylene Blue Following Cyanide Intoxication. Toxicol Sci 2019; 170:82-94. [PMID: 30907955 PMCID: PMC6592189 DOI: 10.1093/toxsci/kfz081] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Our study was aimed at (1) determining the efficacy of the dye methylene blue (MB), following a rapidly lethal cyanide (CN) intoxication in un-sedated rats; (2) clarifying some of the mechanisms responsible for the antidotal properties produced by this potent cyclic redox dye. Sixty-nine awake rats acutely intoxicated by CN (IP, KCN 7 mg/kg) received saline, MB (20 mg/kg) or hydroxocobalamin (HyCo, 150 mg/kg) when in deep coma. Survival in this model was very low, reaching 9% at 60 min without any treatment. Methylene blue significantly increased survival (59%, p < .001) at 60 min, versus 37% with HyCo (p < .01). In addition, 8 urethane-anesthetized rats were exposed to a sublethal CN intoxication (KCN, 0.75 mg/kg/min IV for 4 min); they received MB (20 mg/kg, IV) or saline, 5 min after the end of CN exposure. All MB-treated rats displayed a significant reduction in hyperlactacidemia, a restoration of pyruvate/lactate ratio-a marker of NAD/NADH ratio-and an increase in CO2 production, a marker of the activity of the TCA cycle. These changes were also associated with a 2-fold increase in the pool of CN in red cells. Based on series of in vitro experiments, looking at the effects of MB on NADH, as well as the redox effects of MB on hemoglobin and cytochrome c, we hypothesize that the antidotal properties of MB can in large part be accounted for by its ability to readily restore NAD/NADH ratio and to cyclically re-oxidize then reduce the iron in hemoglobin and the electron chain complexes. All of these effects can account for the rapid antidotal properties of this dye following CN poisoning.
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Affiliation(s)
- Philippe Haouzi
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | - Marissa McCann
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | - Nicole Tubbs
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | - Annick Judenherc-Haouzi
- Heart and Vascular Institute, Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Joseph Cheung
- Center of Translational Medicine and Department of Medicine, Lewis Katz School of Medicine of Temple University, Philadelphia, Pennsylvania
| | - Frederic Bouillaud
- Institut Cochin, INSERM U1016-CNRS UMR8104, Université Paris Descartes, Paris, France
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Tiravia M, Sabuzi F, Cirulli M, Pezzola S, Di Carmine G, Cicero DO, Floris B, Conte V, Galloni P. 3,7-Bis(N
-methyl-N
-phenylamino)phenothiazinium Salt: Improved Synthesis and Aggregation Behavior in Solution. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900504] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Martina Tiravia
- Department of Chemical Science and Technologies; University of Rome Tor Vergata; Via della Ricerca Scientifica snc 00133 Rome Italy
| | - Federica Sabuzi
- Department of Chemical Science and Technologies; University of Rome Tor Vergata; Via della Ricerca Scientifica snc 00133 Rome Italy
| | - Martina Cirulli
- Department of Chemical Science and Technologies; University of Rome Tor Vergata; Via della Ricerca Scientifica snc 00133 Rome Italy
- School of Biological and Chemical Sciences; Queen Mary University of London; Mile End Road E1 4NS London United Kingdom
| | - Silvia Pezzola
- BT-InnoVaChem srl; Via della Ricerca Scientifica snc 00133 Rome Italy
| | - Graziano Di Carmine
- Department of Chemical and Pharmaceutical Sciences; University of Ferrara; Via L. Borsari 4 44121 Ferrara Italy
| | - Daniel Oscar Cicero
- Department of Chemical Science and Technologies; University of Rome Tor Vergata; Via della Ricerca Scientifica snc 00133 Rome Italy
| | - Barbara Floris
- Department of Chemical Science and Technologies; University of Rome Tor Vergata; Via della Ricerca Scientifica snc 00133 Rome Italy
| | - Valeria Conte
- Department of Chemical Science and Technologies; University of Rome Tor Vergata; Via della Ricerca Scientifica snc 00133 Rome Italy
| | - Pierluca Galloni
- Department of Chemical Science and Technologies; University of Rome Tor Vergata; Via della Ricerca Scientifica snc 00133 Rome Italy
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Schalch TO, Palmieri M, Longo PL, Braz-Silva PH, Tortamano IP, Michel-Crosato E, Mayer MPA, Jorge WA, Bussadori SK, Pavani C, Negreiros RM, Horliana ACRT. Evaluation of photodynamic therapy in pericoronitis: Protocol of randomized, controlled, double-blind study. Medicine (Baltimore) 2019; 98:e15312. [PMID: 31027098 PMCID: PMC6831272 DOI: 10.1097/md.0000000000015312] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Accepted: 03/27/2019] [Indexed: 11/25/2022] Open
Abstract
INTRODUCTION Pericoronitis is a common disease in the eruption phase of third molars, sometimes debilitating, with an impact on the quality of life. The most indicated treatment in the initial phase is the irrigation for cleanliness of the region. In order to reduce the chances of systemic dissemination of the infection and antibiotics use, it is mandatory to test effective treatments in the initial phase of pericoronitis avoiding the evolution of the infectious disease. Photodynamic therapy (PDT) is an interesting alternative because it is an effective antimicrobial treatment that is easy to perform and does not select bacterial resistance. The methylene blue (MB) used in PDT has been studied in an oral formulation, which optimizes the formation of monomers increasing its antimicrobial action. OBJECTIVE The aim of this study is to evaluate the effectiveness of PDT with MB in an astringent vehicle in pericoronitis on the initial phase in healthy patients through microbiological, clinical, and immune response. The impact of pericoronitis on oral health-related quality of life (OHRQoL) of these patients will also be evaluated. METHOD In this randomized, controlled, double-blind clinical bioequivalence protocol, 64 healthy patients with pericoronitis will be evaluated. Patients will be randomized into the positive control group (G1) (n = 32): irrigation with sterile saline and PDT (conventional MB at 0.005% concentration and irradiation with low intensity laser λ = 660 nm, 9J per point and radiant exposure of 318 J/cm), and the experimental group (G2) (n = 32): treatment identical to G1, however, MB will be delivered in a new formulation for oral use. Microbiological analysis will be performed by RT-PCR for the bacterium Tannerella forsythia. Gingival crevicular fluid and saliva will be collected to evaluate cytokines by Luminex assay (Luminex Corporation, Austin, TX). The pain (visual analogue scale), swelling and buccal opening (digital caliper), and OHRQoL will also be evaluated through the OHIP-14 questionnaire. The variables will be evaluated in T1 (baseline), T2 (immediately after PDT), and T3 (4th day after PDT). Registration: clinicaltrials.gov NCT03576105. Registered in July 2018.
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Affiliation(s)
- Tânia Oppido Schalch
- Postgraduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho, UNINOVE
| | - Michelle Palmieri
- Department of Stomatology, School of Dentistry, University of São Paulo
| | | | - Paulo Henrique Braz-Silva
- Department of Stomatology, School of Dentistry, University of São Paulo
- Laboratory of Virology, Institute of Tropical Medicine of São Paulo
| | | | | | | | | | - Sandra Kalil Bussadori
- Postgraduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho, UNINOVE
| | - Christiane Pavani
- Postgraduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho, UNINOVE
| | - Renata Matalon Negreiros
- Postgraduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho, UNINOVE
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