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

Elmars Zarins; Julija Pervenecka; Elina Misina; Kristine Lazdovica; Karlis Balodis; Aivars Vembris; Valdis Kokars

doi:10.1117/12.2553687

1 April 2020 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

Elmars Zarins, Julija Pervenecka, Elina Misina, Kristine Lazdovica, Karlis Balodis, Aivars Vembris, Valdis Kokars

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Proceedings Volume 11357, Fiber Lasers and Glass Photonics: Materials through Applications II; 113571K (2020) https://doi.org/10.1117/12.2553687
Event: SPIE Photonics Europe, 2020, Online Only

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 λ_max 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.

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Elmars Zarins, Julija Pervenecka, Elina Misina, Kristine Lazdovica, Karlis Balodis, Aivars Vembris, and Valdis Kokars "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", Proc. SPIE 11357, Fiber Lasers and Glass Photonics: Materials through Applications II, 113571K (1 April 2020); https://doi.org/10.1117/12.2553687

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