Issue 101, 2016, Issue in Progress
From the journal:

RSC Advances

Cryptochiral binaphthyl–bipyrene luminophores linked with alkylene esters: intense circularly polarised luminescence, but ultraweak circular dichroism†

Shoma Nakanishi,a   Kazuki Nakabayashi,a   Takaya Mizusawa,a   Nozomu Suzuki,b   Sibo Guo,b   Michiya Fujiki*b  and  Yoshitane Imai*a  

* Corresponding authors

a Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
E-mail: y-imai@apch.kindai.ac.jp

b Graduate School of Materials Science, Nara Institute of Science and Technology, Takayama, Ikoma, Nara 630-0192, Japan
E-mail: fujikim@ms.naist.jp

Abstract

A C2-symmetric binaphthyl-based luminophore connected to two luminescent pyrene pendants was designed to express cryptochirality, as demonstrated by the ultraweak circular dichroism signals observed in their ground state. The observed results were due to the unrestricted rotational freedom of the flexible ester wires between the binaphthyl and pyrene moieties in the absence of light. Finally, the C2-symmetric luminophore revealed photoexcited chirality, as confirmed by intense circularly polarised luminescence.

Graphical abstract: Cryptochiral binaphthyl–bipyrene luminophores linked with alkylene esters: intense circularly polarised luminescence, but ultraweak circular dichroism

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Article information

DOI
https://doi.org/10.1039/C6RA20342F
Article type
Paper
Submitted
12 Aug 2016
Accepted
10 Oct 2016
First published
10 Oct 2016

RSC Adv., 2016,6, 99172-99176

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Cryptochiral binaphthyl–bipyrene luminophores linked with alkylene esters: intense circularly polarised luminescence, but ultraweak circular dichroism

S. Nakanishi, K. Nakabayashi, T. Mizusawa, N. Suzuki, S. Guo, M. Fujiki and Y. Imai, RSC Adv., 2016, 6, 99172 DOI: 10.1039/C6RA20342F

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