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Optical properties of 1-(4,5-diphenyl-1-p-tolyl-1H-imidazol-2-yl)naphthalen-2-ol--ESIPT process.
- Source :
-
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy [Spectrochim Acta A Mol Biomol Spectrosc] 2014; Vol. 120, pp. 389-94. Date of Electronic Publication: 2013 Oct 21. - Publication Year :
- 2014
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Abstract
- This article presents optical, electrochemical, and thermal properties of novel class of green fluorescent 1-(4,5-diphenyl-1-p-tolyl-1H-imidazol-2-yl)naphthalen-2-ol. Detailed photo physical and quantum chemical studies have been performed to elucidate the excited state intramolecular proton transfer (ESIPT) reaction leading a large stokes shifted fluorescence emission from the phototautomer. The results of quantum chemical investigations confirmed the intramolecular charge transfer characteristics of the ESIPT tautomers. The high photoluminescence quantum yield is ascribed to twisted chromophores due to phenyl substituents at 1,2-position of the imidazole ring which restricted intramolecular motion, leading to an optically allowed lowest optical transition without self quenching.<br /> (Copyright © 2013 Elsevier B.V. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1873-3557
- Volume :
- 120
- Database :
- MEDLINE
- Journal :
- Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
- Publication Type :
- Academic Journal
- Accession number :
- 24211620
- Full Text :
- https://doi.org/10.1016/j.saa.2013.10.017