Surface Separation and in Situ Structural Regulation of Photosensitive Oligomer in a Flexible Template

• DOI: 10.1021/acs.langmuir.7b04293
• Publication Date: 2018-04-13T15:46:05Z
• Authors: Xiaoyang Zhu; Yanfang Geng; Hongjun Xiao; Linxiu Cheng; Hongyu Shi; Fengying Zhao; Kandong Hu; Xuan Guo; Bin Tu; Qingdao Zeng
• Keywords: 01 natural sciences; 0104 chemical sciences

Surface-selective adsorption and separation are very important for the application of surface functional materials. In this study, a photosensitive diazo-macrocycle has been synthesized by the solvent method with a very low yield, which can adsorb onto the substrate surface modified with a template molecule. By using this flexible template on the graphite surface, a simple separation strategy for the macrocyclic molecule with specific shape and size from reaction mixtures was developed. Additionally, one of the two azo units in this trapped photosensitive macrocycle could convert from trans to cis conformation under UV irradiation due to the steric effect. Our results provide a new way to construct functional nanodevices using a surface flexible template as the separation and regulation medium.