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Proceedings Paper

Liquid crystalline light-emitting thermally stable readily processable substituted polyacetylenes
Author(s): Ben Zhong Tang; Jacky W.Y. Lam; Jingdong Luo; Yuping Dong; Kevin K.L. Cheuk; Zhiliang Xie; HoiSing Kwok
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Paper Abstract

Mesomorphic and luminescent poly(propiolates) with different skeleton structures (-{(R)CequalsC[CO2(CH2)6OCO-Biph- OC7H15]}n-; R equals H (1), CH3 (2), C6H5 (3), Biph equals biphenylyl} are synthesized. The backbone absorption in 2 and 3 are weak but upon photoexcitation, the polymers emit strong violet light of 369 nm, whose intensities are higher than that from poly(l-phenyl-l-octyne), a well-known highly-fluorescent polyacetylene. The main chain of 3 absorbs strongly at 380 nm, and the polymer is completely nonluminescent. All the polymers are thermally stable and form enantiotropic monolayer SmA phase, with 1 adopting well-ordered packing arrangements.

Paper Details

Date Published: 11 December 2001
PDF: 7 pages
Proc. SPIE 4463, Liquid Crystals V, (11 December 2001); doi: 10.1117/12.449942
Show Author Affiliations
Ben Zhong Tang, Hong Kong Univ. of Science and Technology (Hong Kong)
Jacky W.Y. Lam, Hong Kong Univ. of Science and Technology (Hong Kong)
Jingdong Luo, Hong Kong Univ. of Science and Technology (China)
Yuping Dong, Hong Kong Univ. of Science and Technology (Hong Kong)
Kevin K.L. Cheuk, Hong Kong Univ. of Science and Technology (Hong Kong)
Zhiliang Xie, Hong Kong Univ. of Science and Technology (Hong Kong)
HoiSing Kwok, Hong Kong Univ. of Science and Technology (Hong Kong)


Published in SPIE Proceedings Vol. 4463:
Liquid Crystals V
Iam-Choon Khoo, Editor(s)

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