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摘要:
Crystalline complexes that exhibited light switchable proton conductivity are of great interest but still a challenge in material science.Herein,a terbium phosphonate chain complex was synthesized through assembly of electron-rich phosphonate units,electron-deficient polypyridine components and paramagnetic Tb3+ions.Via light irradiation and heat treatment,the photogenerated radicals could simultaneously and reversibly tune the photochromic,luminescent and magnetic properties.Originating from the abundant hydrogen bonding networks formed between PO3 groups and lattice water molecules,proton conductive behaviour was explored with high proton conductivity of(1.74±0.19)x10-3 S cm-1 at 80℃and 100%relative humidity.Importantly,accompanied with the colorless sample changed to blue,the proton conductivity increased about 20%after room temperature light illumination,implying that light irradiation could act as an external stimulus to enhance the conductive properties of original material.This work innovatively realized the light responsive conductive property in the electron transfer photochromic materials,providing a novel strategy for the con-struction of smart materials.
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篇名 Light enhanced proton conductivity in a terbium phosphonate photochromic chain complex
来源期刊 中国科学:化学(英文版) 学科
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年,卷(期) 2021,(7) 所属期刊栏目 ARTICLES
研究方向 页码范围 1170-1176
页数 7页 分类号
字数 语种 英文
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中国科学:化学(英文版)
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1674-7291
11-5839/O6
16开
北京东黄城根北街16号
1950
eng
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