摘要：采用氢键模板聚合法制备溶剂响应性Fe3O4@poly(HEMA-co-AA)光子纳米链;并采用场发射扫描电子显微镜、光学显微镜和光纤光谱仪对其形貌、光学性能及溶剂响应性能进行表征。将反应时间、混合溶剂比例固定,系统研究多种制备条件下得到的Fe3O4@poly(HEMA-co-AA)光子纳米链的刚度、链长、反射率及反射波长等结构与光学性能的变化规律。结果表明:当制备时间为静置1 min、紫外光固化5 min、溶剂乙二醇和水的质量比为6∶1时,随着单体浓度、交联剂浓度、粒子浓度、磁场强度的增大,光子纳米链的链长随之增加,链的柔性随之降低,链的反射率呈现先增大后减小的趋势;同时随着温度的升高,光子纳米链的链长变化不明显,链的柔性、粒子间距、反射率均呈现出逐渐增大的趋势。
关键词：光子晶体柔性纳米链；磁组装；光学性能调控；粒子浓度
Abstract: We fabricated solvent-responsive Fe3O4@poly ( HEMA －co －AA) photonic nanochains by hydrogen bond template polymerization．Optical and solvent responsiveness were characterized by field emission scanning electron microscopy，optical microscopy and fiber optic spectrometer．In the fixed reaction time and the ratio of the mixed solvent，the system was studied under various preparation conditions．The variation of the structure and optical properties of the Fe3O4@poly( HEMA－co－AA) photonic nanochains，such as stiffness，chain length，reflectivity and reflectivity wavelength was described．The experimental results show that when the preparation time is 1 min，UV curing 5 min，solvent ethylene glycol and water mass ratio is 6∶1，as the monomer concentration，crosslinker concentration，particle concentration and magnetic field strength increase respectively，the chain length of the photonic nanochains increases，the flexibility of the chain is reduced，and the reflectivity of the chain is first increased and then decreased．At the same time， with the increase of temperature，the chain length of photonic nanochains is not obvious，and the flexibility，particle spacing and reflectivity of the chains show a trend of increasing．
Keywords: photonic crystal flexible nanochain; magnetic assembly; optical performance regulation; particle concentra tion
