Abstract

A new hybrid LB film composed of an azobenzene-based photochromic layer (the host) anda p-phenylenediacrylic acid-based photosensitive layer (the guest) has been fabricated. Thehost was demonstrated to regulate the photoreaction kinetics of the guest during UVillumination. The photoresponses of the relevant guest chromophores were verified tobe very sensitive to the intermolecular bonding state during the course of theillumination. Both the conversion factor (and its sensitivity) and the insolublefraction were determined; they imply that such hybrid LB film has a photoresistfingerprint. The photoreactivity of the LB film was explained in terms of a modelstructure.

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