Glycoconjugated polymer 6. Synthesis of poly[styrene-block-(styrene-graft-amylose)] via potato phosphorylase-catalyzed polymerization |
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| Authors: | Atsushi Narumi Kosei Kawasaki Harumi Kaga Toshifumi Satoh Naoya Sugimoto Toyoji Kakuchi |
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| Affiliation: | (1) Division of Molecular Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, 060-8628, Japan E-mail: kakuchi@poly-mc.eng.hokudai.ac.jp, Tel(Fax): 81-11-706-6602, JP;(2) National Institute of Advanced Industrial Science and Technology (AIST): Sapporo 062-8517, Japan, JP |
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| Abstract: | Summary The potato phosphorylase-catalyzed polymerization of α-D-glucose-1-phosphate (G-1-P) onto poly[styrene-block-(4-vinylbenzyl maltohexaoside)] (1) was performed at the molar ratios of [G-l-P]0 and [maltohexaose]0 of 35, 80, and 250. The product was found to be soluble in dimethyl sulfoxide, which was a good solvent for amylose, and showed the complex-formation with iodine, indicating that the product was assignable to poly[styrene-block-(styrene-graft-amylose)] (2). The quantitative analysis of the liberated phosphoric acid gave the average degree of polymerization o f the glucose unit (n) as 27, 5 1, and 180 for 2-I, 2-II, and 2-III, respectively. Received: 29 November 2002/Accepted: 22 December 2002 Correspondence to Toyoji Kakuchi |
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