Chiral Strandberg-type molybdates [(RPO3)2Mo5O15]2- as molecular gelators:: Self-assembled fibrillar nanostructures with enhanced optical activity

被引:116
作者
Carraro, Mauro [1 ,2 ]
Sartorel, Andrea [1 ,2 ]
Scorrano, Gianfranco [1 ,2 ]
Maccato, Chiara [1 ,2 ]
Dickman, Michael H. [3 ]
Kortz, Ulrich [3 ]
Bonchio, Marcella [1 ,2 ]
机构
[1] Univ Padua, ITM CNR, I-35131 Padua, Italy
[2] Univ Padua, Dept Chem Sci, I-35131 Padua, Italy
[3] Jacobs Univ, Sch Sci & Engn, D-28725 Bremen, Germany
关键词
gels; helical structures; nanostructures; polyoxometalates; self-assembly;
D O I
10.1002/anie.200801629
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Twisted fibers with a helical structure are formed by self-assembly of chiral polyoxomolybdates (POMs) [(R*PO3)2Mo 5O15]2- (R=CH3CH(NH3), CH3CH(CH3)CH(NH3)) through H-bonding. High-resolution TEM images of single fibers show an ordered substructure with parallel rows about 2 nm in width, in agreement with the packing of the H-bonded POM subunits in the X-ray structure (see inset). (Figure Presented) © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码:7275 / 7279
页数:5
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