An unprecedented (3,7)-connected microporous solvatochromic coordination polymer built on a semirigid tripod pyridinium-4-olate ligand

A new microporous coordination polymer [Cd4(L)2(BDC)4]·(DMF)3(H2O) (L = 1,1′,1′′-(2,4,6-trimethylbenzene-1,3,5-triyl)tris(methylene)tripyridinium-4-olate, BDC = benzene-1,4-dicarboxylic acid) was synthesized, which possesses a (3,7)-connected framework with rectangular tubular open channels, and exhibits permanent porosity and strong photoluminescence with solvatochromic behavior upon excitation.

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