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http://dx.doi.org/10.5012/bkcs.2007.28.7.1175

Synthesis and Properties of Hexyl End-Capped Thiophene Oligomers Containing Anthracene Moiety in the Center  

Choi, Jung-Hei (Department of Chemistry and the Center for Plastic Information System, Pusan National University)
Cho, Dae-Won (Department of Chemistry, Chosun University)
Jin, Sung-Ho (Department of Chemistry Education and the Center for Plastic Information System, Pusan National University)
Yoon, Ung-Chan (Department of Chemistry and the Center for Plastic Information System, Pusan National University)
Publication Information
Bulletin of the Korean Chemical Society / v.28, no.7, 2007 , pp. 1175-1182 More about this Journal
Abstract
A series of new organic semiconductors hexyl end-capped thiophene-anthracene oligomers containing the anthracene moiety in the center of the oligomers are synthesized. The target oligomers have been obtained by Stille coupling reactions as key step reactions. The synthesized thiophene-anthracene oligomers were characterized by 1H-NMR, 13C-NMR and high-resolution mass spectroscopy, respectively. All of the oligomers are soluble in chlorinated solvents. Their optical, thermal and electrochemical properties were measured. The hexyl end-capped oligomers and their unsubstituted oligomers exhibit the same absorption behavior in dilute toluene solution. Hexyl end-capped bis-terthienylanthracene oligomer is observed to show liquid crystalline mesophase at 166 oC in heating process. The thermal analyses as well as the electrochemical measurement data indicate that the designed materials show better thermal and oxidation stability than the corresponding oligothiophenes without anthracene core. Fluorescence lifetimes and fluorescence quantum yields of the thiophene-anthracene oligomers are measured to be 10-14 ps and 3.4-9.9 × 10?3 which are much shorter and lower than those of oligothiophenes respectively.
Keywords
Thiophene oligomer; Anthracene; Stille reaction; Thiophene-anthracene oligomer;
Citations & Related Records
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Times Cited By Web Of Science : 5  (Related Records In Web of Science)
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