A new cadmium-organic framework fluorescent sensor for Al3+ and Ca2+ ions in aqueous medium

A new metal-organic framework (MOF), [Cd-2(bPtc)(HCOO)]center dot NH2(CH3)(2)center dot 3H(2)O (1), where H(4)bptc = 3,3',5,5'biphenyltetracarboxylic acid, was obtained by solvothermal reaction. The topology of MOF 1 is a (5,8)-connected net with {4(16) center dot 5(8) center dot 6(4)}{4(4) center dot 5(6)}(2) point symbol. MOF 1 shows high stability in aqueous solution. Luminescence study indicates that MOF 1 possesses selective turn-on luminescent sensing functions towards Al3+ and Ca2+ ions in aqueous solutions. (C) 2017 Elsevier B.V. All rights reserved.