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Coordination Polymers with Grinding‐Size‐Dependent Mechanoresponsive Luminescence Induced by π···π Stacking Interactions
Author(s) -
Yan Yong,
Zhang NingNing,
Li Rong,
Xu JianGang,
Lu Jian,
Zheng FaKun,
Guo GuoCong
Publication year - 2017
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201700574
Subject(s) - chemistry , luminescence , stacking , polymer , grinding , fluorescence , zinc , crystal structure , mechanochemistry , crystallography , isophthalic acid , crystal engineering , polymer chemistry , supramolecular chemistry , organic chemistry , materials science , metallurgy , physics , optoelectronics , quantum mechanics , polyester , terephthalic acid
Two new coordination polymers {[Zn(L)(dma)] 2 · H 2 O} n ( 1 ) and {[Cd(L)(H 2 O) 3 ] · dma · H 2 O} n ( 2 ) {H 2 L = 5‐[(pyren‐9‐ylmethyl)amino]isophthalic acid, dma = N , N ‐dimethylacetamide} were synthesized by the reaction of H 2 L and zinc(II) or cadmium(II) nitrate in mixed solvents. Single‐crystal XRD analyses show that polymers 1 and 2 have 1D chain structures. Due to the existence of π ··· π stacking interactions in the crystal structure, 1 exhibits mechanoresponsive luminescence, and the fluorescence color changes from weakly yellow to noticeably greenish yellow after application of external mechanical stimulus. Compound 1 shows grinding‐size‐dependent fluorescent emission.