期刊
CRYSTAL GROWTH & DESIGN
卷 11, 期 7, 页码 3039-3044出版社
AMER CHEMICAL SOC
DOI: 10.1021/cg200315f
关键词
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资金
- Natural Science Foundation of China [20971065, 91022011, 21021062]
- National Basic Research Program of China [2010CB-923303, 2007CB925103]
Two porous (3,4)-connected zinc coordination polymers, {[Zn(TIPA)(mal)(1/2)](NO3) center dot 3H(2)O}(n) (1) and {[Zn(TIPA)(glu)(1/2)] (NO3) center dot H2O}(n) (2) (mal = malonic acid, glu = glutaric acid, TIPA = tris(4-(1H-imidazol-1-yl)phenyl)amine) have been hydrothermally synthesized and characterized. Complex 1 crystallizes in the orthorhombic space group Pnna (No. 52) containing an unusual 3D subnet with (10,3)-d topology and left- and right-handed helical channels. Complex 2 crystallizes in the orthorhombic chiral space group P222(1) (No. 17) containing an unusual 3D chiral subnet with (10,3)-a topology and 4-fold right-handed helical channels. The conversion of achiral complex 1 with a (10,3)-d (utp) achiral subnet to chiral complex 2 with a (10,3)-a (srs) chiral subnet has been successfully induced by increasing the length of ditopic aliphatic dicarboxylic acid. Second harmonic generation (SHG) measurement was performed on complex 2 revealing that 2 has a strong SHG response, and the SHG efficiency is approximately 0.8 times that of urea (ca. 8 times that of KDP). In addition, photoluminescence and thermogravimetric analysis were also performed on 1 and 2.
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