Asymmetric Lumino-Transformer: Circularly Polarized Luminescence of Chiral Eu(III) Coordination Polymer with Phase-Transition Behavior

Makoto Tsurui; Yuichi Kitagawa; Sunao Shoji; Hitomi Ohmagari; Miki Hasegawa; Masayuki Gon; Kazuo Tanaka; Masato Kobayashi; Tetsuya Taketsugu; Koji Fushimi; Yasuchika Hasegawa

doi:10.1021/acs.jpcb.2c01639

Asymmetric Lumino-Transformer: Circularly Polarized Luminescence of Chiral Eu(III) Coordination Polymer with Phase-Transition Behavior

J Phys Chem B. 2022 May 26;126(20):3799-3807. doi: 10.1021/acs.jpcb.2c01639. Epub 2022 May 16.

Authors

Makoto Tsurui¹, Yuichi Kitagawa^{2

3}, Sunao Shoji^{2

3}, Hitomi Ohmagari⁴, Miki Hasegawa⁴, Masayuki Gon⁵, Kazuo Tanaka⁵, Masato Kobayashi^{3

6}, Tetsuya Taketsugu^{3

6}, Koji Fushimi², Yasuchika Hasegawa^{2

3}

Affiliations

¹ Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo 060-8628, Hokkaido, Japan.
² Faculty of Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo 060-8628, Japan.
³ Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo 001-0021, Hokkaido, Japan.
⁴ College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara 252-5258, Kanagawa, Japan.
⁵ Graduate School of Engineering, Kyoto University, Kyoto daigaku-katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
⁶ Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Hokkaido, Japan.

PMID: 35576625
DOI: 10.1021/acs.jpcb.2c01639

Abstract

A chiral Eu(III) coordination polymer with phase-transition behavior, [Eu(+tfc)₃(m-dpeb)]_n, (+tfc: (+)-3-trifluoroacetylcamphorato, m-dpeb: 1,3-bis(diphenylphosphorylethynyl)benzene) was reported for understanding the effect of polymer chain arrangement (orientation effect) on the circularly polarized luminescence (CPL) in a solid system. The phase-transition behavior of the transformable Eu(III) coordination polymer was characterized using differential scanning calorimetry and powder X-ray diffraction. The Eu(III) coordination polymer exhibited phase transition at approximately 180 °C. The magnitude of the CPL intensity was drastically changed because of the phase transition, without coordination geometrical change around the Eu(III) ion. In this study, the orientation effect of a chiral Eu(III) coordination polymer on the CPL properties in crystalline solid is demonstrated.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Circular Dichroism
Europium* / chemistry
Luminescence*
Polymers / chemistry
Stereoisomerism

Substances

Polymers
Europium