Journal
OPTICAL MATERIALS
Volume 46, Issue -, Pages 605-613Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optmat.2015.05.045
Keywords
Optical materials; Semiconducting pyrazoline; Highly fluorescent; Optoelectronics; HOMO and LUMO energy
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Funding
- Meritorious UGC-BSR fellowship, New Delhi
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An investigation has been made to synthesize small organic materials possessing longer wavelength emission in a simple manner. Three novel pyrazoline compounds were synthesized and characterized by appropriate approaches. The effect of thiophene, furan and pyridine substitution on pyrazoline skeleton was studied and explained systematically. Green, blue and violet emission was obtained with respect to different substituent groups. The fluorescence decay time and quantum yield of the synthesized materials I, II and III are found to be 3.42, 2.65, 2.83 ns and 0.83, 0.76, 0.78 respectively. The theoretical quantum calculation was used to optimize the spatial distribution of ground state geometry (HOMO) and excited state geometry (LUMO) levels of the molecules. The materials performance and bandgap energies (E-g) of all the three compounds revealed that they belong to a semiconductor materials category. (C) 2015 ElseVier B.V. All rights reserved.
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