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Chenglong Hu, Shaoyun Chen, Weihong Zhang, Fangyan Xie, Jian Chen and Xudong Chen SERS study on surface chain geometry of atactic poly (methyl methacrylate) film and nanosphere Journal of Raman Spectroscopy 44

Article first published online: 5 JUL 2013 | DOI: 10.1002/jrs.4341

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The chain conformation presented in the interface between a-PMMA film/NS and the Ag metal was different from the bulk film/NS which was investigated by SERS technique. The molecular chain axis of a-PMMA film adopted a trans-conformation on bonding to Ag surface due to the chemisorption, while the α-CH3 groups of the surface chain of a-PMMA NS were forced to stand erectly on Ag metal surface because of the giant local electromagnetic field.

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