Synthesis and Properties of New Laser Dyes Containing 4-(2-Thienyl)Pyridine Skeleton |
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| Authors: | Riichiro Nakajima Takashi Ise Yoshiyuki Takahashi Hideo Yoneda Kanya Tanaka Tadashi Hara |
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| Affiliation: | Department of Chemical Engineering , Faculty of Engineering, Doshisha University , Kamigyo-ku, Kyoto, 602, Japan |
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| Abstract: | Abstract Three 4-(oligothienyl)pyridines and four α,ω-di(4-pyridyl)oligo-thiophenes were prepared and the effect of conjugated thiophene rings on their fluorescence properties were examined. 4-(2,2′-Bithienyl-5-yl)pyridine and 2,5-di(4-pyridyl)thiophene exhibited laser dye emission upon pumping with a nitrogen laser and the conversion efficiency of the latter was 1.5 times as great as that of a commercial laser dye PBBO at 400 nm. |
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