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Effect of the change of heteroatom on phenyl capped benzazole: Photophysical and electrochemical properties from the structural viewpoint
Indian Inst Sci Educ & Res IISER Kolkata, Dept Chem Sci, Mohanpur 741246, India..
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry. Indian Inst Sci Educ & Res IISER Kolkata, Dept Chem Sci, Mohanpur 741246, India..
Indian Inst Sci Educ & Res IISER Kolkata, Dept Chem Sci, Mohanpur 741246, India..
2018 (English)In: Journal of Luminescence, ISSN 0022-2313, E-ISSN 1872-7883, Vol. 194, p. 164-169Article in journal (Refereed) Published
Abstract [en]

Donor-acceptor-donor type phenyl capped benzazoles were synthesized and their photophysical properties were studied. By changing the heteroatom (N, O, S and Se) of central acceptor benzazole unit, the emission color was varied from blue to green. Phenyl capped benzotriazole (1) and benzooxadiazole (2) were characterized by single crystal X-ray crystallography. The absolute solid state fluorescence quantum yields of these compounds were obtained in the range of 0.05-0.93 by a calibrated integrating sphere method. High solid state quantum yield can be attributed to the non-planarity and absence of strong intermolecular interactions in the solid state. Except phenyl capped benzotriazole (1), all compounds showed reversible reduction peak in cyclic voltammetry experiments which reflects the considerable n-type nature.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV , 2018. Vol. 194, p. 164-169
Keywords [en]
Donor-acceptor-donor, Benzazole, Solid-state fluorescence, Oligomer, Quantum yield
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:uu:diva-343549DOI: 10.1016/j.jlumin.2017.10.029ISI: 000415292500025OAI: oai:DiVA.org:uu-343549DiVA, id: diva2:1187261
Available from: 2018-03-02 Created: 2018-03-02 Last updated: 2018-03-02Bibliographically approved

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Pati, Palas Baran

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