Seo Chunhee, Hyon Jinho, Suk Soyeon, Oh Changjoon, Nam Jihye, Minh Duong Nguyen, Sim Jae Hyun, Kang Youngjong
Department of Chemistry, Hanyang University 222 Wangsimni-Ro, Seongdong-Gu Seoul 04763 Korea
Materials Science and Nanoengineering, Rice University 6100 Main St. Houston TX 77005 USA.
RSC Adv. 2018 Oct 25;8(63):36272-36279. doi: 10.1039/c8ra07363e. eCollection 2018 Oct 22.
Hyperuniform photonic structures (HPSs) have been doped with complex index materials to increase their reflectivity and colour expression range. HPSs synthesized using dielectric SiO nanoparticles have been mixed with a small amount of dopant nanoparticles ( ≤ 1%) having a complex refractive index. Various dyes including Sudan I, Sudan Blue II, Alizarin yellow GG, Bromocresol purple and polydopamine (PDA) are used as dopants. Large reflectivity enhancements of HPSs (∼100%) are observed by resonant interference of photonic band gaps (PBGs) and optical band gaps (OBGs). Reflectivity enhancements are observed only when PBGs of HPSs match with OBGs of dopants. The colour expression range of HPS increases by 600% by doping with melanine-like PDA nanoparticles, which have the imaginary part of the refractive index in whole visible range.
超均匀光子结构（HPSs）已被掺杂复合折射率材料以提高其反射率和颜色表达范围。使用介电SiO纳米颗粒合成的HPSs已与少量具有复合折射率的掺杂纳米颗粒（≤1%）混合。包括苏丹红I、苏丹蓝II、茜素黄GG、溴甲酚紫和聚多巴胺（PDA）在内的各种染料用作掺杂剂。通过光子带隙（PBGs）和光学带隙（OBGs）的共振干涉观察到HPSs的反射率大幅提高（约100%）。仅当HPSs的PBGs与掺杂剂的OBGs匹配时才观察到反射率提高。通过掺杂在整个可见光范围内具有折射率虚部的类黑色素PDA纳米颗粒，HPS的颜色表达范围增加了600%。
