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Chemical Physics Letters, Vol.337, No.4-6, 403-407, 2001
Preparation and optical limiting properties of polycarbonates containing fullerene unit
Polycarbonates (PCs) convalently linked 1,2-(1 ', 1 '; 2 ', 2 ' -tetracyanomethanoxymethano)[60]fuller (TCNEO-C-60) and N-methyl-pyrrolidino[60]fullerene (MPYLD-C-60) with interesting optical limiting behavior are obtained by direct reaction of PC with TCNEO-C-60 and MPYLD-C-60. respectively, using AlCl3 as catalyst. The electron-accepting ability of TCNEO-C-60 (acceptor-C-60) is stronger than that of C-60 and MPYLD-C-60, and TCNEO-C-60-PCs limit strong 532 nm optical pulses more effectively than C-60-PC and MPYLD-C-60-PC. This suggests that increasing the electron-accepting ability of fullerene will be effective in improving the optical limiting properties of PC containing fullerene unit.