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Proceedings Paper

Glassy 2-(1-benzyl-2-styryl-6-methylpyridin-4(1H)-ylidene) fragment containing 1H-indene-1,3(2H)-dione and pyrimidine-2,4,6(1H,3H,5H)-trione derivatives with light-emitting and amplified spontaneous emission properties
Author(s): Elmars Zarins; Julija Pervenecka; Elina Misina; Kristine Lazdovica; Karlis Balodis; Aivars Vembris; Valdis Kokars
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Paper Abstract

A series of 2-(1-benzyl-2-(styryl)-6-methylpyridin-4(1H)-ylidene) fragment containing glassy organic compounds have been synthesized from relevant luminescent 4H-pyran-4-ylidene derivatives and investigated as potential solution processable emitters. Glass transition temperatures of synthesized 1H-pyridine compounds are above 100°C with thermal stabilities higher than 260°C. In the solutions of dichloromethane their absorption bands are in the range from 350 nm to 500 nm with photoluminescence from 500 nm to 650 nm. In a contrary to the 4H-pyran-4-ylidene derivatives, the incorporation of various electron acceptor fragments within the 1H-pyridine fragment containing molecules only slightly influenced absorption and photoluminescence band shifts. Based on these compounds, neat spin-cast films were obtained and investigated as light-emitting mediums which show amplified spontaneous emission (ASE) with λmax in the range from 603 nm to 615 nm with ASE threshold values as low as 46 μJ/cm2. Synthesized 1H-pyridine derivatives show perspective to be applied as solution-processable components for light-amplification studies.

Paper Details

Date Published: 1 April 2020
PDF: 9 pages
Proc. SPIE 11357, Fiber Lasers and Glass Photonics: Materials through Applications II, 113571K (1 April 2020); doi: 10.1117/12.2553687
Show Author Affiliations
Elmars Zarins, Riga Technical Univ. (Latvia)
Julija Pervenecka, Univ. of Latvia (Latvia)
Elina Misina, Riga Technical Univ. (Latvia)
Kristine Lazdovica, Riga Technical Univ. (Latvia)
Karlis Balodis, Riga Technical Univ. (Latvia)
Aivars Vembris, Univ. of Latvia (Latvia)
Valdis Kokars, Riga Technical Univ. (Latvia)

Published in SPIE Proceedings Vol. 11357:
Fiber Lasers and Glass Photonics: Materials through Applications II
Maurizio Ferrari; Jacob I. Mackenzie; Stefano Taccheo, Editor(s)

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