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Halogen Bonding as a New Driving Force for Layer-by-Layer Assembly

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journal contribution
posted on 11.09.2007, 00:00 by Fang Wang, Ning Ma, Qiuxia Chen, Wenbin Wang, Liyan Wang
A new approach for fabricating a layer-by-layer polymer film was explored, which was based on the halogen bonding between poly(4-(4-iodo-2,3,5,6-tetrafluorophenoxy)-butyl acrylate) and poly(4-vinylpyridine). Layer-by-layer assembly of two polymers was confirmed by UV−vis spectroscopy and quartz crystal microbalance measurements. The interaction between the two polymers was identified as halogen bonding by X-ray photoelectron spectroscopy. The surface of the multilayer film is flat, and the thickness of one bilayer is about 1.3 nm. We also compared the stability of a halogen-bonded multilayer film in methanol with that of a hydrogen-bonded multilayer film.