Strengthened graphene oxide/diazoresin multilayer composites from layer-by-layer assembly and cross-

• 作 者: Xian-He Huang Meng-Meng Zhang Xin-Wei Dou Xuan Lu Yu-Jun Qin Pu Zhang Jia-Hua Shi Zhi-Xin Guo
• 机 构: Department of Chemistry,Renmin University of China,Key Laboratory of Natural Medicine and Immuno-Eng
• 出 处: Chinese Chemical Letters
• 发表日期: 2015年09期
• 关键词: multilayer assembly irradiation spherical covalent dissolution linking hollow te

The layer-by-layer assembly of graphene oxide and diazoresin is carried out via the electrostatic and hydrogen bond interactions on planar substrates and colloidal templates.The successful planar and spherical growth of multilayer could be investigated by UV-vis spectrophotometry and scanning electron microscopy,respectively.Subsequent UV irradiation or heating would convert the ionic bonds and hydrogen bonds to covalent bands,which significantly improves the stability of the multilayer composite against solvent etching.For the cross-linked core-shell composites,the template cores could be removed by dissolution and hollow microspheres are obtained.

The layer-by-layer assembly of graphene oxide and diazoresin is carried out via the electrostatic and hydrogen bond interactions on planar substrates and colloidal templates. Successful planar and spherical growth of multilayer could be investigated by UV-vis spectrophotometry and scanning electron microscopy, respectively. Subsequent UV irradiation or heating would convert the ionic bonds and hydrogen bonds to covalent bands, which significantly improves the stability of the multilayer composite against solvent etching. For the cross-linked core-shell composites, the template cores could be removed by dissolution and hollow microspheres are obtained.