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Optical, Electrochemical, Third-Order Nonlinear Optical Investigations of 3,4,5-Trimethoxy Phenyl Substituted Non-Aqueous Phthalocyanines

A new series of non-aqueous phthalocyanines having 3,4,5-trimethoxy phenyl group at peripheral positions in which the central cavity possessing Cu(II), Zn(II), and without metals has been synthesized, and its absorption, fluorescence (steady-state and excited state lifetimes), electrochemical, and t...

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Autores principales: Srivishnu, K. S., Banerjee, Dipanjan, Ramnagar, Ramya Athira, Rathod, Jagannath, Giribabu, Lingamallu, Soma, Venugopal Rao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8458761/
https://www.ncbi.nlm.nih.gov/pubmed/34568277
http://dx.doi.org/10.3389/fchem.2021.713939
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author Srivishnu, K. S.
Banerjee, Dipanjan
Ramnagar, Ramya Athira
Rathod, Jagannath
Giribabu, Lingamallu
Soma, Venugopal Rao
author_facet Srivishnu, K. S.
Banerjee, Dipanjan
Ramnagar, Ramya Athira
Rathod, Jagannath
Giribabu, Lingamallu
Soma, Venugopal Rao
author_sort Srivishnu, K. S.
collection PubMed
description A new series of non-aqueous phthalocyanines having 3,4,5-trimethoxy phenyl group at peripheral positions in which the central cavity possessing Cu(II), Zn(II), and without metals has been synthesized, and its absorption, fluorescence (steady-state and excited state lifetimes), electrochemical, and third-order nonlinear optical (NLO) properties were evaluated. Absorption studies data suggest that all three phthalocyanines obey Beer–Lambert’s law, and the redox properties indicate that both oxidation and reduction reactions are macrocyclic centered. The singlet quantum yields were measured in different solvents and were found to be in the range of 0.2–0.5 in the case of free-base, whereas it was in the range of 0.1–0.5 in zinc derivative, while the time-resolved fluorescence data revealed lifetimes of typically a few ns. The third-order NLO properties were investigated using the Z-scan technique with kilohertz (for retrieving true electronic nonlinearities) and megahertz repetition rate femtosecond pulses at 800 nm. Intensity-dependent Z-scan studies revealed robust NLO coefficients for solutions and thin films (two-photon absorption cross-sections of 9,300–57,000 GM) of these molecules suggesting a strong potential for optical switching, imaging, and optical limiting applications.
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spelling pubmed-84587612021-09-24 Optical, Electrochemical, Third-Order Nonlinear Optical Investigations of 3,4,5-Trimethoxy Phenyl Substituted Non-Aqueous Phthalocyanines Srivishnu, K. S. Banerjee, Dipanjan Ramnagar, Ramya Athira Rathod, Jagannath Giribabu, Lingamallu Soma, Venugopal Rao Front Chem Chemistry A new series of non-aqueous phthalocyanines having 3,4,5-trimethoxy phenyl group at peripheral positions in which the central cavity possessing Cu(II), Zn(II), and without metals has been synthesized, and its absorption, fluorescence (steady-state and excited state lifetimes), electrochemical, and third-order nonlinear optical (NLO) properties were evaluated. Absorption studies data suggest that all three phthalocyanines obey Beer–Lambert’s law, and the redox properties indicate that both oxidation and reduction reactions are macrocyclic centered. The singlet quantum yields were measured in different solvents and were found to be in the range of 0.2–0.5 in the case of free-base, whereas it was in the range of 0.1–0.5 in zinc derivative, while the time-resolved fluorescence data revealed lifetimes of typically a few ns. The third-order NLO properties were investigated using the Z-scan technique with kilohertz (for retrieving true electronic nonlinearities) and megahertz repetition rate femtosecond pulses at 800 nm. Intensity-dependent Z-scan studies revealed robust NLO coefficients for solutions and thin films (two-photon absorption cross-sections of 9,300–57,000 GM) of these molecules suggesting a strong potential for optical switching, imaging, and optical limiting applications. Frontiers Media S.A. 2021-09-09 /pmc/articles/PMC8458761/ /pubmed/34568277 http://dx.doi.org/10.3389/fchem.2021.713939 Text en Copyright © 2021 Srivishnu, Banerjee, Ramnagar, Rathod, Giribabu and Soma. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Chemistry
Srivishnu, K. S.
Banerjee, Dipanjan
Ramnagar, Ramya Athira
Rathod, Jagannath
Giribabu, Lingamallu
Soma, Venugopal Rao
Optical, Electrochemical, Third-Order Nonlinear Optical Investigations of 3,4,5-Trimethoxy Phenyl Substituted Non-Aqueous Phthalocyanines
title Optical, Electrochemical, Third-Order Nonlinear Optical Investigations of 3,4,5-Trimethoxy Phenyl Substituted Non-Aqueous Phthalocyanines
title_full Optical, Electrochemical, Third-Order Nonlinear Optical Investigations of 3,4,5-Trimethoxy Phenyl Substituted Non-Aqueous Phthalocyanines
title_fullStr Optical, Electrochemical, Third-Order Nonlinear Optical Investigations of 3,4,5-Trimethoxy Phenyl Substituted Non-Aqueous Phthalocyanines
title_full_unstemmed Optical, Electrochemical, Third-Order Nonlinear Optical Investigations of 3,4,5-Trimethoxy Phenyl Substituted Non-Aqueous Phthalocyanines
title_short Optical, Electrochemical, Third-Order Nonlinear Optical Investigations of 3,4,5-Trimethoxy Phenyl Substituted Non-Aqueous Phthalocyanines
title_sort optical, electrochemical, third-order nonlinear optical investigations of 3,4,5-trimethoxy phenyl substituted non-aqueous phthalocyanines
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8458761/
https://www.ncbi.nlm.nih.gov/pubmed/34568277
http://dx.doi.org/10.3389/fchem.2021.713939
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