Synthesis and Solid-State Polymerization of L-Alanine Derivatives with a (1-Pyrenyl)butadiynyl Group

Yoko Tatewaki Department of Organic Device Engineering, Graduate School of Science and Engineering, Yamagata University, Yonezawa, Japan

Akinori Sato Department of Organic Device Engineering, Graduate School of Science and Engineering, Yamagata University, Yonezawa, Japan

Shoya Ito Department of Organic Device Engineering, Graduate School of Science and Engineering, Yamagata University, Yonezawa, Japan

Satoshi Inayama Department of Organic Device Engineering, Graduate School of Science and Engineering, Yamagata University, Yonezawa, Japan

Shuji Okada Department of Organic Device Engineering, Graduate School of Science and Engineering, Yamagata University, Yonezawa, Japan

Abstract

(1-Pyrenyl)butadiyne derivatives 5 and 6 with a methylene chain and a L-alanine moiety as a chiral group were synthesized, and the end group of 5 and 6 was ethyl ester and carboxylic acid, respectively. These compounds could be polymerized in the crystals by UV irradiation at 365 nm. The regular solid-state polymerization was confirmed for 5 although 6 showed irregular polymerization. Their nanoaggregate water dispersions were obtained by the reprecipitation method. Morphology of their nanoaggregates was studied by SEM, and helical nanoribbons and circle domains were observed for 5 and 6, respectively.

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Synthesis and Solid-State Polymerization of L-Alanine Derivatives with a (1-Pyrenyl)butadiynyl Group

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Synthesis and Solid-State Polymerization of L-Alanine Derivatives with a (1-Pyrenyl)butadiynyl Group

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