材料科学
光子学
纳米晶
发光
光子晶体
光电子学
手性(物理)
发色团
复合数
纳米技术
光化学
手征对称性
复合材料
物理
化学
量子力学
Nambu–Jona Lasinio模型
夸克
作者
Wei Li,Mingcong Xu,Chunhui Ma,Yushan Liu,Jin Zhou,Zhijun Chen,Yonggui Wang,Haipeng Yu,Jian Li,Shouxin Liu
标识
DOI:10.1021/acsami.9b05941
摘要
Integrating chromophores into chiral photonic crystals to fabricate materials that exhibit circularly polarized luminescence (CPL) is promising as this method allows efficient manipulation of the spontaneous emission within photonic bandgaps (PBGs). However, tuning the wavelength of CPL and the dissymmetry factor ( glum) in a convenient and accurate manner remains a significant challenge. Here, right-handed, tunable upconverted CPL (UC-CPL) emission was achieved by integrating multiple emissive, upconverting nanoparticles into cellulose nanocrystal based chiral photonic films that had tunable PBGs. Glycerol was used to tune the PBGs of the chiral photonic films, which yielded tunable UC-CPL emission at 450 and 620 nm with a tailored glum. Moreover, humidity responsive UC-CPL at blue wavelength was obtained from glycerol-composite photonic film, with a glum that ranged from -0.156 to -0.033. It was possible because the PBG and chirality of photonic composite was responded to the relative humidity. This work gives valuable insight into tunable and stimuli-responsive CPL photonic systems.
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