Star hexacarboxylate:synthesis,crystal structure and luminescent properties of its terbium complex  

作　　者：杨迟 黄永德 陈小明 崔英德 杨燕生 

机构地区：[1]Faculty of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou 510090 China [2]Department of Chemistry,The University of Hong Kong,Pokfulam Road,Hong Kong,China [3]Department of Chemistry,Zhongshan University,Guangzhou 510275 China [4]Zhongkai Agrotechnical College,Guangzhou 510225 China

出　　处：《Science China Chemistry》2003年第6期558-566,共9页中国科学（化学英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.20105003); the Natural Science Foundation of Guangdong Province(Grant Nos.990128 and 974174).

摘　　要：A new star host, hexakis (carboxylphenyl-2-thiolmethyl)benzene (1H6), has been synthesized by a simple one-step condensation procedure with the high yield. Crystal structure of the DMSO adduct 1H6·6DMSO (2) reveals it to be rhombohedral crystal system, space group R-3, with a = b = 2.4129(2), c = 1.1576(3) nm, α= β = 90°, γ= 120°, ∨= 5.837(2) nm3, Z = 3. The six arms of side benzoic acid rings and the H-bonded DMSO molecules are located alternatively above and below the central benzene plane with “1,3,5-up/2,4,6-down” conformation. Terbium complex (Tb21)2Py·9H2O (3) was prepared in hot pyridine, which shows bright characterized Tb(III) emission with a longer lifetime and higher luminescent intensity than that of the corresponding terbium benzoate in solid state. These observations suggest that host 1 is a good antenna for sensitizing TbIII emission.A new star host, hexakis(carboxylphenyl-2-thiolmethyl)benzene(1H6), has been synthesized by a simple one-step condensation procedure with the high yield. Crystal structure of the DMSO adduct 1H6·6DMSO(2) reveals it to be rhombohedral crystal system, space group R-3, with a = b = 2.4129(2), c = 1.1576(3) nm, α=β= 90°, γ= 120°, V = 5.837(2) nm3,Z = 3. The six arms of side benzoic acid rings and the H-bonded DMSO molecules are located alternatively above and below the central benzene plane with '1,3,5-up/2,4,6-down' conformation. Terbium complex(Tb21)2Py·9H2O(3) was prepared in hot pyridine, which shows bright characterized Tb(III) emission with a longer lifetime and higher luminescent intensity than that of the corresponding terbium benzoate in solid state. These observations suggest that host 1 is a good antenna for sensitizing TbIII emission.

关 键 词：hexakis-substituted benzene  STAR host  polythiolether polycarboxylate  RARE earth  luminescence. 

分 类 号：O614[理学—无机化学]