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Synthesis and Characterization of pi-Conjugated Multi-branched Molecules Bearing Carbazole and Phenothiazine Peripheral Groups

Authors
Cho, Min JuLee, Tae WanJin, Jung-IlJu, Byeong-KwonChoi, Dong Hoon
Issue Date
2008
Publisher
TAYLOR & FRANCIS LTD
Keywords
absorption; electroluminescence; energy transfer; multi-branched molecule; photoluminescence
Citation
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.491, pp.80 - 87
Indexed
SCIE
SCOPUS
Journal Title
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
Volume
491
Start Page
80
End Page
87
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/125579
DOI
10.1080/15421400802329236
ISSN
1542-1406
Abstract
A novel class of conjugated multi-branched molecules bearing N-hexyl substituted carbazoles and phenothiazine as peripheral groups and [2,4,5-Tris-(diethoxyphosphorylmethyl)benzyl]phosphonic acid diethyl ester core has been synthesized through Horner-Emmons reaction in moderate to good yield. 8HCz-Den and 8HPTz-Den molecules have absorption maxima at 349 and 381 nm in solution states and maximum PL intensities were observed at 434 and 506 nm, respectively. They exhibited good self-film forming properties by solution casting and spin coating. In particular, by doping [2,6-bis(2-(5-(dibutylamino)phenyl)vinyl)-4H-pyran-4-ylidene]propanedinitrile, red emission could be achieved through complete Forster energy transfer process from the light harvesting host to the guest molecule.
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