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Fluorescence in “Nonfluorescent” Polymers

[Image: see text] Recently, a great deal of research has been started on generating fairly strong photoluminescence from organic molecules without having any conjugated π-system or fluorophore. Discrete chromophores or auxochromophores termed as “subfluorophores” may undergo “space conjugation” via...

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Autores principales: Chatterjee, Dhruba P., Pakhira, Mahuya, Nandi, Arun K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7726791/
https://www.ncbi.nlm.nih.gov/pubmed/33324785
http://dx.doi.org/10.1021/acsomega.0c04700
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author Chatterjee, Dhruba P.
Pakhira, Mahuya
Nandi, Arun K.
author_facet Chatterjee, Dhruba P.
Pakhira, Mahuya
Nandi, Arun K.
author_sort Chatterjee, Dhruba P.
collection PubMed
description [Image: see text] Recently, a great deal of research has been started on generating fairly strong photoluminescence from organic molecules without having any conjugated π-system or fluorophore. Discrete chromophores or auxochromophores termed as “subfluorophores” may undergo “space conjugation” via co-operative intramolecular conformation followed by intermolecular aggregation to generate fluorescence or sometimes phosphorescence emission. Polymeric materials are important in this regard as nonconjugated polymers self-assemble/aggregate in a moderately concentrated solution and also in the solid state, producing membranes, films, and so forth with good physical and mechanical properties. Therefore, promoting fluorescence in these commodity polymers is very much useful for sensing, organic light emitting diodes (OLED), and biological applications. In this perspective, we have discussed the aggregation-induced emission from four different types of architectures, for example, (i) dendrimers or hyperbranched polymers, (ii) entrapped polymeric micellar self-assembly, (iii) cluster formation, and (iv) stretching-induced aggregation, begining with the genesis of fluorescence from aggregation of propeller-shaped small organic molecules. The mechanism of induced fluorescence of polymers with subfluorophoric groups is also discussed from the theoretical calculations of the energy bands in the aggregated state. Also, an attempt has been made to highlight some useful applications in the sensing of surfactants, bacteria, cell imaging, drug delivery, gene delivery, OLED, and so forth.
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spelling pubmed-77267912020-12-14 Fluorescence in “Nonfluorescent” Polymers Chatterjee, Dhruba P. Pakhira, Mahuya Nandi, Arun K. ACS Omega [Image: see text] Recently, a great deal of research has been started on generating fairly strong photoluminescence from organic molecules without having any conjugated π-system or fluorophore. Discrete chromophores or auxochromophores termed as “subfluorophores” may undergo “space conjugation” via co-operative intramolecular conformation followed by intermolecular aggregation to generate fluorescence or sometimes phosphorescence emission. Polymeric materials are important in this regard as nonconjugated polymers self-assemble/aggregate in a moderately concentrated solution and also in the solid state, producing membranes, films, and so forth with good physical and mechanical properties. Therefore, promoting fluorescence in these commodity polymers is very much useful for sensing, organic light emitting diodes (OLED), and biological applications. In this perspective, we have discussed the aggregation-induced emission from four different types of architectures, for example, (i) dendrimers or hyperbranched polymers, (ii) entrapped polymeric micellar self-assembly, (iii) cluster formation, and (iv) stretching-induced aggregation, begining with the genesis of fluorescence from aggregation of propeller-shaped small organic molecules. The mechanism of induced fluorescence of polymers with subfluorophoric groups is also discussed from the theoretical calculations of the energy bands in the aggregated state. Also, an attempt has been made to highlight some useful applications in the sensing of surfactants, bacteria, cell imaging, drug delivery, gene delivery, OLED, and so forth. American Chemical Society 2020-11-25 /pmc/articles/PMC7726791/ /pubmed/33324785 http://dx.doi.org/10.1021/acsomega.0c04700 Text en © 2020 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Chatterjee, Dhruba P.
Pakhira, Mahuya
Nandi, Arun K.
Fluorescence in “Nonfluorescent” Polymers
title Fluorescence in “Nonfluorescent” Polymers
title_full Fluorescence in “Nonfluorescent” Polymers
title_fullStr Fluorescence in “Nonfluorescent” Polymers
title_full_unstemmed Fluorescence in “Nonfluorescent” Polymers
title_short Fluorescence in “Nonfluorescent” Polymers
title_sort fluorescence in “nonfluorescent” polymers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7726791/
https://www.ncbi.nlm.nih.gov/pubmed/33324785
http://dx.doi.org/10.1021/acsomega.0c04700
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