Acta Phys. -Chim. Sin. ›› 2005, Vol. 21 ›› Issue (02): 209-213.doi: 10.3866/PKU.WHXB20050220

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Microstructure of C60 Langmuir-Blodgett Films

JIANG Xiao-Hong;ZHANG Xing-Tang;LI Yun-Cai;HUANG Ya-Bin;ZHANG Ping-Yu;WANG De-Jun;DU Zu-Liang   

  1. College of Chemistry, Jilin University, Changchun 130012; Key Laboratory of Spectial Functional Materials, Henan University, Kaifeng 475001
  • Received:2004-06-30 Revised:2004-09-13 Published:2005-02-15
  • Contact: DU Zu-Liang

Abstract: The structure of C60 aggregation was controlled successfully by LB(Langmuir-Blodgett) technique using behenic acid(BA), arachic acid(AA), stearic acid(SA) and octadecanyl amine(OA) as the assistant material. Dynamic force microscopy(DFM) data showed that there were two kinds of structures for the special C60 assembly(molar ratio of nC60∶nSA∶nAA∶nOA=2∶3∶3∶4)∶one’s diameter was about 180 nm; the other was 30 nm. It indicated that the dents on top of the fatty chain in the LB films prevented the further aggregation and controlled the structures of the C60 aggregates. The size of C60 congeries was not uniform for the acid/amine with the same chain length or with other molar ratio, and there was only one kind of structure for these C60 assemblies. UV-Vis absorption spectrum also indicated that the C60 molecules aggregated in some extent in the LB films, which was relevant to the DFM data.

Key words: C60 aggregation, Dynamic force microscopy, Langmuir-Blodgett technique, Assistant material, Microstructure