Carbazole-Based Donor−Acceptor Compounds:  Highly Fluorescent Organic Nanoparticles

Carbazole-based donor−acceptor compounds 1,2-dicyano-trans-1,2-bis-4-(carbazolyl)phenylethylene (1) and 1,2-dicyano-trans-1,2-bis-4-(3,6-di-tert-butylcarbazolyl)phenylethylene (2) were synthesized. 1 and 2 show negative solvatochromic absorption behavior, but show both positive and negative solvatoc...

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Bibliographic Details
Published inOrganic letters Vol. 10; no. 2; pp. 281 - 284
Main Authors Palayangoda, Sujeewa S, Cai, Xichen, Adhikari, Ravi M, Neckers, Douglas C
Format Journal Article
LanguageEnglish
Published WASHINGTON American Chemical Society 17.01.2008
Amer Chemical Soc
Subjects
Chemistry
Chemistry, Organic
Physical Sciences
Science & Technology
LIGHT-EMITTING-DIODES
DYES
MICROCRYSTALS
STATE
CRYSTAL
PHOTOPHYSICAL PROPERTIES
EMISSION
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Summary:Carbazole-based donor−acceptor compounds 1,2-dicyano-trans-1,2-bis-4-(carbazolyl)phenylethylene (1) and 1,2-dicyano-trans-1,2-bis-4-(3,6-di-tert-butylcarbazolyl)phenylethylene (2) were synthesized. 1 and 2 show negative solvatochromic absorption behavior, but show both positive and negative solvatochromic behavior in the fluorescence spectra. In a water/THF mixture, 1 as well as 2 aggregate into 50−150 nm nanoparticles. The emission of nanoparticles of the new types of fluorescent organic nanoparticles (FONs) 1 and 2 is much higher than that of either 1 or 2 in solution
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ISSN:1523-7060
1523-7052
DOI:10.1021/ol702666g