Excimers in Multichromophoric Assemblies: Boon or Bane?

Abstract Exciton dynamics in organic semiconductors is a subject of great significance from the standpoint of light emission, as well as light harvesting. As transient excited state species, excimers are expected to play a significant role in the dynamics and the fate of...

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Main Author: Debangshu Chaudhuri
Format: Article
Language:English
Published: Georg Thieme Verlag 2021-09-01
Series:Organic Materials
Subjects:
Online Access:http://www.thieme-connect.de/DOI/DOI?10.1055/a-1578-0960
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author Debangshu Chaudhuri
author_facet Debangshu Chaudhuri
author_sort Debangshu Chaudhuri
collection DOAJ
description Abstract Exciton dynamics in organic semiconductors is a subject of great significance from the standpoint of light emission, as well as light harvesting. As transient excited state species, excimers are expected to play a significant role in the dynamics and the fate of the excited state. Till recently, the discourse on excimers in organic systems revolved around their role in aggregation-induced fluorescence quenching, or utilizing their characteristic red-shifted emission to report local interactions. But in the last decade, research in the area of organic multichromophoric systems has brought the spotlight back on this fascinating species. This review focuses on recent developments that highlight the importance of excimers in various processes involving multichromophoric systems, such as circularly polarized emission, exciton migration, and singlet fission. The review also attempts to address the question of whether excimers are useful or detrimental to various photophysical and photochemical processes of importance. Table of content: Introduction Excimers in Multichromophoric Assemblies Excimer Luminescence Excimers in Light Harvesting Conclusions and Outlook
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spelling doaj.art-e934529b8d5840e3aa6b40f683252ca02022-12-22T02:33:53ZengGeorg Thieme VerlagOrganic Materials2625-18252021-09-0130345546810.1055/a-1578-0960Excimers in Multichromophoric Assemblies: Boon or Bane?Debangshu Chaudhuri0Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur 741246, India.Abstract Exciton dynamics in organic semiconductors is a subject of great significance from the standpoint of light emission, as well as light harvesting. As transient excited state species, excimers are expected to play a significant role in the dynamics and the fate of the excited state. Till recently, the discourse on excimers in organic systems revolved around their role in aggregation-induced fluorescence quenching, or utilizing their characteristic red-shifted emission to report local interactions. But in the last decade, research in the area of organic multichromophoric systems has brought the spotlight back on this fascinating species. This review focuses on recent developments that highlight the importance of excimers in various processes involving multichromophoric systems, such as circularly polarized emission, exciton migration, and singlet fission. The review also attempts to address the question of whether excimers are useful or detrimental to various photophysical and photochemical processes of importance. Table of content: Introduction Excimers in Multichromophoric Assemblies Excimer Luminescence Excimers in Light Harvesting Conclusions and Outlookhttp://www.thieme-connect.de/DOI/DOI?10.1055/a-1578-0960excimersmultichromophoric assemblycircularly polarized luminescenceexciton migrationsinglet fissionsymmetry-breaking charge separation
spellingShingle Debangshu Chaudhuri
Excimers in Multichromophoric Assemblies: Boon or Bane?
Organic Materials
excimers
multichromophoric assembly
circularly polarized luminescence
exciton migration
singlet fission
symmetry-breaking charge separation
title Excimers in Multichromophoric Assemblies: Boon or Bane?
title_full Excimers in Multichromophoric Assemblies: Boon or Bane?
title_fullStr Excimers in Multichromophoric Assemblies: Boon or Bane?
title_full_unstemmed Excimers in Multichromophoric Assemblies: Boon or Bane?
title_short Excimers in Multichromophoric Assemblies: Boon or Bane?
title_sort excimers in multichromophoric assemblies boon or bane
topic excimers
multichromophoric assembly
circularly polarized luminescence
exciton migration
singlet fission
symmetry-breaking charge separation
url http://www.thieme-connect.de/DOI/DOI?10.1055/a-1578-0960
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