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Title: Creating polymer structures of tunable electric functionality by nanoscale discharge-assisted cross-linking and oxygenation
Authors: Xie, X.N. 
Deng, M. 
Xu, H. 
Yang, S.W.
Qi, D.C. 
Gao, X.Y. 
Chung, H.J. 
Sow, C.H. 
Tan, V.B.C. 
Wee, A.T.S. 
Issue Date: 1-Mar-2006
Citation: Xie, X.N., Deng, M., Xu, H., Yang, S.W., Qi, D.C., Gao, X.Y., Chung, H.J., Sow, C.H., Tan, V.B.C., Wee, A.T.S. (2006-03-01). Creating polymer structures of tunable electric functionality by nanoscale discharge-assisted cross-linking and oxygenation. Journal of the American Chemical Society 128 (8) : 2738-2744. ScholarBank@NUS Repository.
Abstract: We report the creation of polymeric micro/nanostructures which exhibit distinct chemical and physical characteristics from the matrix poly(N-vinyl carbazole) (PVK). The structure formation is based on atomic force microscopy (AFM) facilitated cross-linking and oxygenation. The reaction of PVK with AFM lithographically induced nanoscale discharge produces raised structures in which bridge oxygen links neighboring carbazole groups. The cross-linking by bridge oxygen converts the initially insulating PVK matrix to chemically modified conducting patterns through the formation of extended π-conjugations. A comprehensive AFM, PES (photoelectron spectroscopy), FTIR (Fourier transform infrared spectroscopy), and DFT (density functional theory) analysis is presented to address the chemophysical identity of the patterned structures. Our results demonstrate new capabilities of AFM nanolithography in generating heterogeneous functional structures in a polymer matrix. © 2006 American Chemical Society.
Source Title: Journal of the American Chemical Society
ISSN: 00027863
DOI: 10.1021/ja0577241
Appears in Collections:Staff Publications

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