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Pure Appl. Chem., 2000, Vol. 72, No. 1-2, pp. 119-126

One-dimensional growth of rock-salt PbS nanocrystals mediated by surfactant/polymer templates

Shihe Yang*, Suhua Wang and K. K. Fung

Department of Chemistry, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong

Abstract: A novel method has been developed for the synthesis of compound semiconductor nanorods (PbS). This method consists of using a functionalized lead(II) salt Pb(AOT)2 as the precursor and a polymer (PVB) as both a matrix and a stabilizer. The PbS nanocrystallites prepared using this method are all oriented with their (100) lattice planes parallel to the substrate surface. Possible mechanisms are briefly discussed for the growth of the rod-shaped PbS nanocrystals with the preferred orientation in the polymer film.