title: Steric-repulsion-based magnetically responsive photonic crystals.
abstract: The first steric-repulsion-based magnetically responsive photonic crystals (MRPCs) is constructed by synthesizing uniform superparamagnetic polyvinylpyrrolidone-coated Fe3 O4 colloidal nanocrystal clusters. The color tunable range of the MRPCs can not only cover almost the entire visible specztrum in solvents of diverse polarities, but also is insusceptible to ionic strength or pH values, facilitating the practical applications of MRPCs.
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Luo
authors.forename: Huiru
authors.initials: H
authors.lastname: Ma
authors.forename: Fangzhi
authors.initials: F
authors.lastname: Mou
authors.forename: Mingxing
authors.initials: M
authors.lastname: Zhu
authors.forename: Jindan
authors.initials: J
authors.lastname: Yan
authors.forename: Jianguo
authors.initials: J
authors.lastname: Guan
keywords: magnetic photonic crystals; magnetite; polyvinylpyrrolidone; steric repulsion; surface polymers