Pandey, UP and Nandi, RP and Thilagar, P (2020) Design, Synthesis, and Temperature-Driven Molecular Conformation-Dependent Delayed Fluorescence Characteristics of Dianthrylboron-Based Donor�Acceptor Systems. In: Frontiers in Chemistry, 8 .
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Abstract
We report a simple and novel molecular design strategy to enhance rISC in boron-based donor�acceptor systems to achieve improved delayed fluorescence characteristics. Dianthrylboryl ((An)2B)-based aryl aminoboranes 1 (donor: phenothiazine) and 2 (donor: N,N-diphenylamine) were synthesized by a simple one-pot procedure. The energy of the electronic excited states in 1 and 2 were modulated by varying the arylamine donor strength and electronic coupling between D and A moieties. The presence of a large �-system (anthryl moiety) on boron enhances the electronic communication between donor arylamine and acceptor boryl moieties, and hence, both 1 and 2 exhibit delayed fluorescence characteristics in a broad range of temperatures (80�300 K). Single crystal X-ray analysis and temperature-dependent photophysical studies together with theoretical studies were carried out to rationalize the observed intriguing optical signatures of 1 and 2. © Copyright © 2020 Pandey, Nandi and Thilagar.
| Item Type: | Journal Article |
|---|---|
| Publication: | Frontiers in Chemistry |
| Publisher: | Frontiers Media S.A. |
| Additional Information: | The copyright of this article belongs to Authors |
| Department/Centre: | Division of Chemical Sciences > Inorganic & Physical Chemistry |
| Date Deposited: | 28 Jul 2021 10:54 |
| Last Modified: | 28 Jul 2021 10:54 |
| URI: | http://eprints.iisc.ac.in/id/eprint/67364 |
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