Two double helical modes of bidipyrrin-ZnII complexes

Hiromitsu Maeda; Takuma Nishimura; Ryo Akuta; Kazuto Takaishi; Masanobu Uchiyama; Atsuya Muranaka

doi:10.1039/c2sc21913a

Two double helical modes of bidipyrrin-Zn^II complexes

Hiromitsu Maeda, Takuma Nishimura, Ryo Akuta, Kazuto Takaishi, Masanobu Uchiyama, Atsuya Muranaka

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

This paper reports the formation and properties of covalently strapped double helices of bidipyrrin-Zn^II complexes, where four dipyrrin chromophores interact with one another by strong exciton coupling. Thorough experimental examination, UV/vis, CD and ¹H NMR spectra, and theoretical studies suggest the existence of two modes of the double helix depending on the dihedral angles between two of the dipyrrin units at the pyrrole α-α bond. In fact, the changes of the modes were observed according to the lengths of straps as well as the temperatures.

Original language	English
Pages (from-to)	1204-1211
Number of pages	8
Journal	Chemical Science
Volume	4
Issue number	3
DOIs	https://doi.org/10.1039/c2sc21913a
Publication status	Published - Mar 2013
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)

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AU - Maeda, Hiromitsu

AU - Nishimura, Takuma

AU - Akuta, Ryo

AU - Takaishi, Kazuto

AU - Uchiyama, Masanobu

AU - Muranaka, Atsuya

PY - 2013/3

Y1 - 2013/3

N2 - This paper reports the formation and properties of covalently strapped double helices of bidipyrrin-ZnII complexes, where four dipyrrin chromophores interact with one another by strong exciton coupling. Thorough experimental examination, UV/vis, CD and 1H NMR spectra, and theoretical studies suggest the existence of two modes of the double helix depending on the dihedral angles between two of the dipyrrin units at the pyrrole α-α bond. In fact, the changes of the modes were observed according to the lengths of straps as well as the temperatures.

AB - This paper reports the formation and properties of covalently strapped double helices of bidipyrrin-ZnII complexes, where four dipyrrin chromophores interact with one another by strong exciton coupling. Thorough experimental examination, UV/vis, CD and 1H NMR spectra, and theoretical studies suggest the existence of two modes of the double helix depending on the dihedral angles between two of the dipyrrin units at the pyrrole α-α bond. In fact, the changes of the modes were observed according to the lengths of straps as well as the temperatures.

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Two double helical modes of bidipyrrin-Zn^II complexes

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