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Publikācija: Synthesis

Publication Type Scientific article indexed in SCOPUS or WOS database
Funding for basic activity Unknown
Defending: ,
Publication language English (en)
Title in original language Synthesis, Optical and Thermal Properties of Glassy Trityl Group Containing Luminescent Derivatives of 2-Tert-Butyl-6-Methyl-4H-Pyran- 4-One
Field of research 1. Natural sciences
Sub-field of research 1.4 Chemical sciences
Authors Elmārs Zariņš
Karīna Siltāne
Elīna Misiņa
Valdis Kokars
Kristīne Lazdoviča
Aivars Vembris
Valdis Kampars
Inta Muzikante
Mārtiņš Rutkis
Keywords OLED, organic glass forming compounds, 2-tert-butyl-6-methyl-4H-pyran-4-one, fluorescent dye
Abstract In this work we present simple preparation of original trityl group containing glassy luminescent 6-styryl substituted derivatives of 2-(2-tert-butyl-4H-pyran-4-ylidene)malononitrile (DWK-1TB), 2-(2-tert-butyl-4H-pyran-4-ylidene)-2- ethyl-2-cyanoacetate (KWK-1TB), 2-(2-tert-butyl-4H-pyran-4-ylidene)-1H-indene-1,3(2H)-dione (ZWK-1TB) and 5-(2- tert-butyl-4H-pyran-4-ylidene)pyrimidine-2,4,6(1H,3H,5H)-trione (JWK-1TB). Their optical properties have been investigated. The absorption maxima of synthesized glasses is in region from 425 nm to 515 nm and emission maxima is from 470 nm to 625 nm in solution of dichloromethane. But absorption maxima of their solid films is from 425 nm to 500 nm and emission maxima is in range from 570 nm to 710 nm. Incorporation of bulky trityloxy ethyl groups combining with existing tert-butyl groups results in thin solid films formation of synthesized glasses from volatile organic solvents (chloroform, dichloromethane) without them being doped in any polymer. This makes them perspective for potential applications in organic light-emitting diodes and organic lasers by simple luminescent layer composition with cheap wet-casting approaches. All glasses show good thermal stability with thermal decomposition temperatures from 264o to 318oC and glass transition values up to 158oC for DWK-1TB. These thermal properties of synthesized glasses could make them also useful for potential applications in other optical materials such as materials for nonlinear optics.
DOI: 10.1117/12.921996
Hyperlink: http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1316477 
Reference Zariņš, E., Siltāne, K., Misiņa, E., Kokars, V., Lazdoviča, K., Vembris, A., Kampars, V., Muzikante, I., Rutkis, M. Synthesis, Optical and Thermal Properties of Glassy Trityl Group Containing Luminescent Derivatives of 2-Tert-Butyl-6-Methyl-4H-Pyran- 4-One. Proceedings of SPIE, 2012, Vol.8435: Organic Photonics V, pp.843511-843517. ISSN 0277-786X. e-ISSN 1996-756X. Available from: doi:10.1117/12.921996
Additional information Citation count:
ID 15007