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Aggregation-Induced and Polymorphism-Dependent Thermally Activated Delayed Fluorescence (TADF) Characteristics of an Oligothiophene: Applications in Time-Dependent Live Cell Multicolour Imaging

Sarkar, Samir Kumar and Pegu, Meenakshi and Behera, Santosh Kumar and Narra, Siva Krishna and Thilagar, Pakkirisamy (2019) Aggregation-Induced and Polymorphism-Dependent Thermally Activated Delayed Fluorescence (TADF) Characteristics of an Oligothiophene: Applications in Time-Dependent Live Cell Multicolour Imaging. In: CHEMISTRY-AN ASIAN JOURNAL .

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Official URL: https://dx.doi.org/10.1002/asia.201901138

Abstract

Typically, molecules with a twisted donor-acceptor (D-A) architecture have been exploited for constructing thermally activated delayed fluorescence (TADF) materials. Herein, we report the first example of a thiophene-based thermally activated delayed fluorescent molecule without a D-A architecture. Compound 1 (2,5-bis(2,2-di(thiophen-2-yl)vinyl)thiophene) is conformationally flexible and shows weak fluorescence in the solution state but displays bright TADFin both condensed and solid states. Compound 1 crystallized in two different polymorphs (1 a and 1 b). Interestingly, both polymorphs show distinctly different TADF features. The broad spectral features and the TADF characteristics of 1 have been explored for the time-dependent multicolor (green, yellow and red) imaging of living cells.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to WILEY-V C H VERLAG GMBH
Keywords: Fluorescent Nanoparticles (FNPs); Multicolor Cell Imaging; Polymorphism; Thermally Activated Delayed Fluorescence (TADF); Thiophene
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Depositing User: Id for Latest eprints
Date Deposited: 13 Dec 2019 09:59
Last Modified: 13 Dec 2019 09:59
URI: http://eprints.iisc.ac.in/id/eprint/63892

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