Sign inversion of magnetic circularly polarized luminescence in Iridium(iii) complexes bearing achiral ligands

Kana Matsudaira; Atsushi Izumoto; Yuki Mimura; Yoshiro Kondo; Satoko Suzuki; Shigeyuki Yagi; Michiya Fujiki; Yoshitane Imai

doi:10.1039/d0cp05775d

Sign inversion of magnetic circularly polarized luminescence in Iridium(iii) complexes bearing achiral ligands

Kana Matsudaira, Atsushi Izumoto, Yuki Mimura, Yoshiro Kondo, Satoko Suzuki, Shigeyuki Yagi, Michiya Fujiki, Yoshitane Imai

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

4 Citations (Scopus)

Abstract

Optically inactive, paramagnetic Ir(iii)(ppy)₃and Ir(iii)(ppy)₂(acac) (ppy: 2-phenylpyridinate and acac: acetylacetonate) showed nearly mirror-symmetric magnetic circularly polarised luminescence (MCPL) spectra in dilute dichloromethane and dimethyl sulfoxide under N-up and S-up geometries in a 1.6-T magnetic field. However, the MCPL signs of Ir(iii)(ppy)₃and Ir(iii)(ppy)₂(acac) under the same N-up (or S-up) Faraday geometry were opposite to each other when one ppy was replaced with an acac. This ligand exchange approach provides facile control of the MCPL sign, irrespective of the Faraday geometry.

Original language	English
Pages (from-to)	5074-5078
Number of pages	5
Journal	Physical Chemistry Chemical Physics
Volume	23
Issue number	9
DOIs	https://doi.org/10.1039/d0cp05775d
Publication status	Published - 2021 Mar 7
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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10.1039/d0cp05775d

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title = "Sign inversion of magnetic circularly polarized luminescence in Iridium(iii) complexes bearing achiral ligands",

abstract = "Optically inactive, paramagnetic Ir(iii)(ppy)3and Ir(iii)(ppy)2(acac) (ppy: 2-phenylpyridinate and acac: acetylacetonate) showed nearly mirror-symmetric magnetic circularly polarised luminescence (MCPL) spectra in dilute dichloromethane and dimethyl sulfoxide under N-up and S-up geometries in a 1.6-T magnetic field. However, the MCPL signs of Ir(iii)(ppy)3and Ir(iii)(ppy)2(acac) under the same N-up (or S-up) Faraday geometry were opposite to each other when one ppy was replaced with an acac. This ligand exchange approach provides facile control of the MCPL sign, irrespective of the Faraday geometry.",

author = "Kana Matsudaira and Atsushi Izumoto and Yuki Mimura and Yoshiro Kondo and Satoko Suzuki and Shigeyuki Yagi and Michiya Fujiki and Yoshitane Imai",

note = "Funding Information: This study was supported by Grants-in-Aid for Scientific Research (18K05094, 19H02712, 19H04600, and 20H04678) from MEXT/Japan Society for the Promotion of Science; the Research Foundation for KDDI (2019-9); the Electrotechnology of Chubu (R-30506); Futaba (2019-6); Murata Science Foundation (H31-007); the Nippon Sheet Glass Foundation for Materials Science and Engineering (H30-4); and the Yashima Environment Technology Foundation (2019-No9). This work was also supported by JST, CREST (JPMJCR2001), Japan. Publisher Copyright: {\textcopyright} the Owner Societies 2021.",

year = "2021",

month = mar,

day = "7",

doi = "10.1039/d0cp05775d",

language = "English",

volume = "23",

pages = "5074--5078",

journal = "Physical Chemistry Chemical Physics",

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T1 - Sign inversion of magnetic circularly polarized luminescence in Iridium(iii) complexes bearing achiral ligands

AU - Matsudaira, Kana

AU - Izumoto, Atsushi

AU - Mimura, Yuki

AU - Kondo, Yoshiro

AU - Suzuki, Satoko

AU - Yagi, Shigeyuki

AU - Fujiki, Michiya

AU - Imai, Yoshitane

N1 - Funding Information: This study was supported by Grants-in-Aid for Scientific Research (18K05094, 19H02712, 19H04600, and 20H04678) from MEXT/Japan Society for the Promotion of Science; the Research Foundation for KDDI (2019-9); the Electrotechnology of Chubu (R-30506); Futaba (2019-6); Murata Science Foundation (H31-007); the Nippon Sheet Glass Foundation for Materials Science and Engineering (H30-4); and the Yashima Environment Technology Foundation (2019-No9). This work was also supported by JST, CREST (JPMJCR2001), Japan. Publisher Copyright: © the Owner Societies 2021.

PY - 2021/3/7

Y1 - 2021/3/7

N2 - Optically inactive, paramagnetic Ir(iii)(ppy)3and Ir(iii)(ppy)2(acac) (ppy: 2-phenylpyridinate and acac: acetylacetonate) showed nearly mirror-symmetric magnetic circularly polarised luminescence (MCPL) spectra in dilute dichloromethane and dimethyl sulfoxide under N-up and S-up geometries in a 1.6-T magnetic field. However, the MCPL signs of Ir(iii)(ppy)3and Ir(iii)(ppy)2(acac) under the same N-up (or S-up) Faraday geometry were opposite to each other when one ppy was replaced with an acac. This ligand exchange approach provides facile control of the MCPL sign, irrespective of the Faraday geometry.

AB - Optically inactive, paramagnetic Ir(iii)(ppy)3and Ir(iii)(ppy)2(acac) (ppy: 2-phenylpyridinate and acac: acetylacetonate) showed nearly mirror-symmetric magnetic circularly polarised luminescence (MCPL) spectra in dilute dichloromethane and dimethyl sulfoxide under N-up and S-up geometries in a 1.6-T magnetic field. However, the MCPL signs of Ir(iii)(ppy)3and Ir(iii)(ppy)2(acac) under the same N-up (or S-up) Faraday geometry were opposite to each other when one ppy was replaced with an acac. This ligand exchange approach provides facile control of the MCPL sign, irrespective of the Faraday geometry.

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Sign inversion of magnetic circularly polarized luminescence in Iridium(iii) complexes bearing achiral ligands

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