HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Peer-reviewed Journal Articles, etc >

Mechanochromic Switching between Delayed Fluorescence and Phosphorescence of Luminescent Coordination Polymers Composed of Dinuclear Copper(I) Iodide Rhombic Cores

Files in This Item:
Yoshida-Mechanochromic-Cu2-polymer-ver14_1.pdf747.85 kBPDFView/Open
Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/75620

Title: Mechanochromic Switching between Delayed Fluorescence and Phosphorescence of Luminescent Coordination Polymers Composed of Dinuclear Copper(I) Iodide Rhombic Cores
Authors: Kobayashi, Atsushi Browse this author
Yoshida, Yuya Browse this author
Yoshida, Masaki Browse this author
Kato, Masako Browse this author →KAKEN DB
Keywords: Copper
Delayed fluorescence
Luminescence
Mechanochromism
Phosphorescence
Issue Date: 1-Oct-2018
Publisher: Wiley-Blackwell
Journal Title: Chemistry-A European journal
Volume: 24
Issue: 55
Start Page: 14750
End Page: 14759
Publisher DOI: 10.1002/chem.201802532
Abstract: The synthesis and photophysical properties of two luminescent Cu-I coordination polymers, [Cu2I2(PPh3)(2)(3-tpyb)](n) and [Cu2I2(PPh3)(2)(4-tpyb)](n) (Cu-3-tpyb and Cu-4-tpyb; PPh3=triphenylphosphine, m-tpyb=1,3,5-tris(m-pyridyl)benzene (m=3, 4)), are described. X-ray structural analysis indicated that one-dimensional coordination chains comprising rhombic {Cu2I2(PPh3)(2)} cores and m-tpyb bridging ligands were formed. Both Cu-3-tpyb and Cu-4-tpyb exhibited blue-to-yellow thermally activated delayed fluorescence (TADF) that originated from mixing of the metal-to-ligand and halide-to-ligand charge-transfer excited states and moderate emission quantum yields of 0.29 and 0.27, respectively, at 298K. Further, mechanochromic luminescence was observed for both complexes. The emission lifetimes indicated that the origin of emission switched from TADF to phosphorescence, which was derived from the triplet cluster-centered ((CC)-C-3) emissive state generated by grinding-induced amorphization.
Rights: This is the peer-reviewed version of the following article: Chemistry-A European journal, Volume24, Issue55, October 1, 2018, Pages 14750-14759, which has been published in final form at https://doi.org/10.1002/chem.201802532 . This article may be used for non-commercial purposes in accordance with Wiley-VCH Terms and Conditions for Self-Archiving.
Type: article (author version)
URI: http://hdl.handle.net/2115/75620
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 小林 厚志

Export metadata:

OAI-PMH ( junii2 , jpcoar_1.0 )

MathJax is now OFF:


 

 - Hokkaido University