Synthesis and Photophysical Properties of Silver(I) Coordination Polymers Bridged by Dimethylpyrazine: Comparison of Emissive Excited States between Silver(I) and Copper(I) Congeners

Taiki Kuwahara; Hideki Ohtsu; Kiyoshi Tsuge

doi:10.1021/acs.inorgchem.4c00271

Synthesis and Photophysical Properties of Silver(I) Coordination Polymers Bridged by Dimethylpyrazine: Comparison of Emissive Excited States between Silver(I) and Copper(I) Congeners

Taiki Kuwahara, Hideki Ohtsu, Kiyoshi Tsuge^*

^*Corresponding author for this work

Program of Chemistry

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

4 Scopus citations

Abstract

Highly luminescent silver(I) coordination polymers [Ag₂X₂(PPh₃)₂(Me₂pyz)]_n (X = I, Br, Cl; Me₂pyz: 2,5-dimethylpyrazine) were prepared together with copper congeners [Cu₂X₂(PPh₃)₂(Me₂pyz)]_n (X = I, Br). All the complexes showed thermally activated delayed fluorescence from the charge-transfer states in the visible region, from blue to red. The isomorphous relationship among the complexes allowed a detailed discussion of the effect of halogenido ligands and crystal packing on their luminescence energy. The relaxation in the emissive excited states (ESs) was determined to be more remarkable in silver complexes than in copper complexes despite their isomorphous structures, and the electronic effect of halogenido ligands was comparable to the effect of relaxation in emissive ESs.

Original language	English
Pages (from-to)	8120-8130
Number of pages	11
Journal	Inorganic Chemistry
Volume	63
Issue number	18
DOIs	https://doi.org/10.1021/acs.inorgchem.4c00271
State	Published - 2024/05/06

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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title = "Synthesis and Photophysical Properties of Silver(I) Coordination Polymers Bridged by Dimethylpyrazine: Comparison of Emissive Excited States between Silver(I) and Copper(I) Congeners",

abstract = "Highly luminescent silver(I) coordination polymers [Ag2X2(PPh3)2(Me2pyz)]n (X = I, Br, Cl; Me2pyz: 2,5-dimethylpyrazine) were prepared together with copper congeners [Cu2X2(PPh3)2(Me2pyz)]n (X = I, Br). All the complexes showed thermally activated delayed fluorescence from the charge-transfer states in the visible region, from blue to red. The isomorphous relationship among the complexes allowed a detailed discussion of the effect of halogenido ligands and crystal packing on their luminescence energy. The relaxation in the emissive excited states (ESs) was determined to be more remarkable in silver complexes than in copper complexes despite their isomorphous structures, and the electronic effect of halogenido ligands was comparable to the effect of relaxation in emissive ESs.",

author = "Taiki Kuwahara and Hideki Ohtsu and Kiyoshi Tsuge",

note = "Publisher Copyright: {\textcopyright} 2024 American Chemical Society.",

year = "2024",

month = may,

day = "6",

doi = "10.1021/acs.inorgchem.4c00271",

language = "英語",

volume = "63",

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journal = "Inorganic Chemistry",

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T1 - Synthesis and Photophysical Properties of Silver(I) Coordination Polymers Bridged by Dimethylpyrazine

T2 - Comparison of Emissive Excited States between Silver(I) and Copper(I) Congeners

AU - Kuwahara, Taiki

AU - Ohtsu, Hideki

AU - Tsuge, Kiyoshi

PY - 2024/5/6

Y1 - 2024/5/6

N2 - Highly luminescent silver(I) coordination polymers [Ag2X2(PPh3)2(Me2pyz)]n (X = I, Br, Cl; Me2pyz: 2,5-dimethylpyrazine) were prepared together with copper congeners [Cu2X2(PPh3)2(Me2pyz)]n (X = I, Br). All the complexes showed thermally activated delayed fluorescence from the charge-transfer states in the visible region, from blue to red. The isomorphous relationship among the complexes allowed a detailed discussion of the effect of halogenido ligands and crystal packing on their luminescence energy. The relaxation in the emissive excited states (ESs) was determined to be more remarkable in silver complexes than in copper complexes despite their isomorphous structures, and the electronic effect of halogenido ligands was comparable to the effect of relaxation in emissive ESs.

AB - Highly luminescent silver(I) coordination polymers [Ag2X2(PPh3)2(Me2pyz)]n (X = I, Br, Cl; Me2pyz: 2,5-dimethylpyrazine) were prepared together with copper congeners [Cu2X2(PPh3)2(Me2pyz)]n (X = I, Br). All the complexes showed thermally activated delayed fluorescence from the charge-transfer states in the visible region, from blue to red. The isomorphous relationship among the complexes allowed a detailed discussion of the effect of halogenido ligands and crystal packing on their luminescence energy. The relaxation in the emissive excited states (ESs) was determined to be more remarkable in silver complexes than in copper complexes despite their isomorphous structures, and the electronic effect of halogenido ligands was comparable to the effect of relaxation in emissive ESs.

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U2 - 10.1021/acs.inorgchem.4c00271

DO - 10.1021/acs.inorgchem.4c00271

M3 - 学術論文

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AN - SCOPUS:85191805202

SN - 0020-1669

VL - 63

SP - 8120

EP - 8130

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 18

ER -

Synthesis and Photophysical Properties of Silver(I) Coordination Polymers Bridged by Dimethylpyrazine: Comparison of Emissive Excited States between Silver(I) and Copper(I) Congeners

Abstract

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