Concentration- and time-dependent eccentric changes in circular dichroism of saccharide-linked ethynylpyridine oligomer with copper(II) ions

Hajime Abe; Yuki Ohishi; Masahiko Inouye

doi:10.1021/jo300735j

Concentration- and time-dependent eccentric changes in circular dichroism of saccharide-linked ethynylpyridine oligomer with copper(II) ions

Hajime Abe^*, Yuki Ohishi, Masahiko Inouye

^*この論文の責任著者

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

13 被引用数 (Scopus)

抄録

We studied the preparation and circular dichroism (CD) behavior of 2,6-pyridylene ethynylene octameric oligomer linked to a β-d-glucoside moiety with a C20-alkylene chain. The addition of Cu(OTf)₂ salt led to a remarkable enhancement of the first CD band of the oligomer, and an unexpected concentration and time dependency were observed. For example, when 1.0 × 10^-3 M of Cu(OTf)₂ was added to a 1,2-dichloroethane solution of the oligomer (5.0 × 10^-4 M, unit concentration), the CD band appeared in the positive at first and gradually inverted into the negative with time.

本文言語	英語
ページ（範囲）	5209-5214
ページ数	6
ジャーナル	Journal of Organic Chemistry
巻	77
号	11
DOI	https://doi.org/10.1021/jo300735j
出版ステータス	出版済み - 2012/06/01

ASJC Scopus 主題領域

有機化学

文献へのアクセス

10.1021/jo300735j

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引用スタイル

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title = "Concentration- and time-dependent eccentric changes in circular dichroism of saccharide-linked ethynylpyridine oligomer with copper(II) ions",

abstract = "We studied the preparation and circular dichroism (CD) behavior of 2,6-pyridylene ethynylene octameric oligomer linked to a β-d-glucoside moiety with a C20-alkylene chain. The addition of Cu(OTf)2 salt led to a remarkable enhancement of the first CD band of the oligomer, and an unexpected concentration and time dependency were observed. For example, when 1.0 × 10-3 M of Cu(OTf)2 was added to a 1,2-dichloroethane solution of the oligomer (5.0 × 10-4 M, unit concentration), the CD band appeared in the positive at first and gradually inverted into the negative with time.",

author = "Hajime Abe and Yuki Ohishi and Masahiko Inouye",

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T1 - Concentration- and time-dependent eccentric changes in circular dichroism of saccharide-linked ethynylpyridine oligomer with copper(II) ions

AU - Abe, Hajime

AU - Ohishi, Yuki

AU - Inouye, Masahiko

PY - 2012/6/1

Y1 - 2012/6/1

N2 - We studied the preparation and circular dichroism (CD) behavior of 2,6-pyridylene ethynylene octameric oligomer linked to a β-d-glucoside moiety with a C20-alkylene chain. The addition of Cu(OTf)2 salt led to a remarkable enhancement of the first CD band of the oligomer, and an unexpected concentration and time dependency were observed. For example, when 1.0 × 10-3 M of Cu(OTf)2 was added to a 1,2-dichloroethane solution of the oligomer (5.0 × 10-4 M, unit concentration), the CD band appeared in the positive at first and gradually inverted into the negative with time.

AB - We studied the preparation and circular dichroism (CD) behavior of 2,6-pyridylene ethynylene octameric oligomer linked to a β-d-glucoside moiety with a C20-alkylene chain. The addition of Cu(OTf)2 salt led to a remarkable enhancement of the first CD band of the oligomer, and an unexpected concentration and time dependency were observed. For example, when 1.0 × 10-3 M of Cu(OTf)2 was added to a 1,2-dichloroethane solution of the oligomer (5.0 × 10-4 M, unit concentration), the CD band appeared in the positive at first and gradually inverted into the negative with time.

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