writer：Shuxun Cui, Chuanjun Liu, Wenke Zhang, Xi Zhang,* and Chi Wu*
keywords：Desorption Force, Polystyrene Segment, Water
source：期刊
specific source：Macromolecules, Vol. 36, No. 11, 2003, 3779
Issue time：2003年
 The combination of specially prepared long linear poly(N-isopropylacrylamide-seg-styrene) (PNIPAM-seg-PS) segmented copolymer chains and single molecule force spectroscopy allows the first direct measurement of the distribution of the desorption force between a PS segment and a PS substrate in water. In addition, the linear dependence of the most probable desorption force on the logarithm of the imposed stretching velocity experimentally reveals the dynamic nature of the adsorption and desorption.