Control of Emissive Excited States of Silver(I) Halogenido Coordination Polymers by a Solid Solution Approach

Masaaki Dosen, Yoshitaka Kawada, Seiko Shibata, Kiyoshi Tsuge*, Yoichi Sasaki, Atsushi Kobayashi, Masako Kato, Shoji Ishizaka, Noboru Kitamura

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Luminescent silver(I) halogenido coordination polymers [Ag2X2(PPh3)2(bpy)]n (X = I, Br, Cl) have been prepared. The iodido and bromido complexes exhibit strong blue phosphorescence assignable to the 3Ï€-Ï€*-excited-state of bpy, whereas the chlorido complex shows luminescence thermochromism due to the Ï€-Ï€*-state of bpy and charge transfer from the {Ag2Cl2} core to the bpy Ï€*-orbital. Taking advantage of their structural similarities, we prepared a series of mixed-halogenido silver(I) complexes [Ag2(XxX′(1-x))2(PPh3)2(bpy)]n (X, X′ = I, Br, Cl) at varying molar fractions as solid solutions. The mixed-halogenido complexes are as strongly luminescent as their parent complexes. The detailed study of their structure and emissive properties revealed smooth energy migration between the luminescent units and modification of the luminescence properties based on the planarity of bpy.

Original languageEnglish
Pages (from-to)8419-8431
Number of pages13
JournalInorganic Chemistry
Volume58
Issue number13
DOIs
StatePublished - 2019/07/01

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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