Haino, Takeharu and Fukunaga, Chigusa and Fukazawa, Yoshimasa (2007) Complexation of higher fullerenes by calixarene-based host molecules. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 7 (4-5). pp. 1386-1388.
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The binding abilities of calixarene-based host molecules for higher fullerenes (C-76, C-78, and C-84) were investigated in organic solvents. The binding abilities of double-calixarenes to higher fullerenes are high. In particular, their association constants to C-76 and C-78 in toluene reached at the order of 10(5) M-1. In contrast, the binding abilities of simple calixarenes decreased as increasing the size of the fullerenes. Accordingly, linking two calixarenes with the covalent bonds creates the large cavities, complementary to higher fullerenes. The structure of the host-guest complex of double-calixarene and C76 was discussed. The carbons of the polar end Of C-76 characteristically shifted upfield more than the other carbons in the host-guest complex, indicating that these polar carbons reside most deeply inside the cavity of the calixarene.
|Uncontrolled Keywords:||calixarene; higher fullerene; host-guest complex; supramolecular chemistry|
|Subjects:||Physical Science > Nano objects|
Material Science > Nanochemistry
|Deposited By:||Farnush Anwar|
|Deposited On:||13 Jan 2009 15:40|
|Last Modified:||13 Jan 2009 15:40|
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