title: A controllable asymmetrical/symmetrical coating strategy for architectural mesoporous organosilica nanostructures.
abstract: We describe a facile and controllable asymmetrical/symmetrical coating strategy for the preparation of various novel periodic mesoporous organosilica (PMO) nanostructures, including Au&PMO Janus, Au@PMO yolk-shell and Au@PMO/mSiO2 yolk-double shell nanoparticles, by using Au@SiO2 nanoparticles as seeds. During this process, ammonia first functions as a basic catalyst facilitating the hydrolyzation and condensation of the organosilica precursor, and additionally as an etching agent selectively in situ dissolving the SiO2 shells of Au@SiO2 nanoparticles to form these unique nanostructures. All these three types of nanoparticles have high surface areas, large pore volumes and tailorable cavity structures. Both the Au&PMO and Au@PMO nanoparticles exhibit excellent catalytic activity for the decomposition of H2O2 and the reduction of 4-nitrophenol. Based on these unique structural merits and organic-inorganic hybrid components, the fabricated Janus and hollow PMO nanoparticles show much improved hemocompatibility, which could be further applied in nano-biomedicines without the need for surface modification.
authors.affiliation: State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China. qiaozhenan@jlu.edu.cn.
authors.forename: Xue
authors.initials: X
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China. qiaozhenan@jlu.edu.cn.
authors.forename: Yapeng
authors.initials: Y
authors.lastname: He
authors.affiliation: State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China. qiaozhenan@jlu.edu.cn.
authors.forename: Chong
authors.initials: C
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China. qiaozhenan@jlu.edu.cn.
authors.forename: Yunling
authors.initials: Y
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China. qiaozhenan@jlu.edu.cn.
authors.forename: Zhen-An
authors.initials: ZA
authors.lastname: Qiao
authors.affiliation: State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China. qiaozhenan@jlu.edu.cn.
authors.forename: Qisheng
authors.initials: Q
authors.lastname: Huo