Synthesis and characterization of unsymmetrical phenylene–ethynylene trimers and tetramers with different chromophores as blue-light-emitters

Autor:	Xinyan Bai, Jerry Ray Dias, T. C. Sandreczki, Xueyi Chen
Rok vydání:	2013
Předmět:	Tetramer Chemistry Phenylene Organic Chemistry Drug Discovery Sonogashira coupling Trimer Chromophore Photochemistry Biochemistry Fluorescence Characterization (materials science) Blue light
Zdroj:	Tetrahedron Letters. 54:1711-1713
ISSN:	0040-4039
DOI:	10.1016/j.tetlet.2013.01.076
Popis:	A series of highly fluorescent p -phenylene–ethynylene π-conjugated oligomers (trimers and tetramers) with different chromophore substituents have been synthesized stepwise under oxygen-free Sonogashira conditions. The emission wavelengths range from 400 to 455 nm for the series. All four trimers and tetramers have visible blue emission under sunlight especially for the case of the pyrene-substituted trimer and tetramer. All oligomers also exhibit very high quantum yields (0.9–1.1), which suggest that these types of compounds could be used as blue-light-emitters.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b122a9da34b89b6bedbc704160e2696f https://doi.org/10.1016/j.tetlet.2013.01.076 Zobrazit plný text záznamu Full Text from ScienceDirect