Blue metal-organic framework encapsulated denatured R-phycoerythrin proteins for a white-light-emitting thin film
Blue metal-organic framework encapsulated denatured R-phycoerythrin proteins for a white-light-emitting thin film
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蓝色金属有机框架封装变性 R-藻红蛋白，形成白光发射薄膜
DOI：
10.1039/c9tc05342e
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发表时间：
2020
影响因子：
6.4
通讯作者：
Peng Xinsheng
中科院分区：
文献类型：
--
作者：
Wang Xiaobin;Li Zhuoyi;Ying Wen;Chen Danke;Li Peipei;Deng Zheng;Peng Xinsheng
荧光蛋白具有良好的光稳定性和突出的光致发光特性，是制造白光发光二极管（wled）非常有前途的发光材料。然而，对水环境的要求和较差的热稳定性极大地限制了它们在照明器件中的广泛应用。在本文中，我们提出了一种简单的策略，将r -藻红蛋白（R-PE）荧光蛋白封装到蓝色金属有机框架（MOF） HSB- w1 （HSB =氢化希夫碱）薄膜中。结果，嵌入HSB-W1晶体中的R-PE蛋白变性，但呈现出绿光（518 nm）和红光（600,647 nm）双色荧光发射，而原来的单光橙光（578 nm）被明显抑制。仔细调整R-PE含量后，得到的R-PE@HSB-W1薄膜发出高质量的白光，接近理想的国际照明委员会（CIE）坐标为（0.33,0.34），高显色指数（CRI）值约为85，适度相关色温（CCT）值为5740 K。该策略可广泛应用于其他荧光分子和发光mof来设计白光材料。
Fluorescent proteins (FPs) with good photostability and outstanding photoluminescence features are very promising luminous materials for the fabrication of white-light-emitting diodes (WLEDs). However, the requirement of an aqueous environment and poor thermal stability have strongly restricted their wide applications in lighting devices. In this paper, we present a facile strategy to encapsulate R-phycoerythrin (R-PE) fluorescent proteins into a blue metal organic framework (MOF) HSB-W1 (HSB = hydrogenated Schiff base) thin film through a facile solid-confinement conversion process. As a result, R-PE proteins embedded into HSB-W1 crystals are denatured, but exhibit dual color fluorescence emissions including green (518 nm) and red (600, 647 nm) light, while the original single orange light (578 nm) is significantly suppressed. After careful adjustment of R-PE content, the resulting R-PE@HSB-W1 thin film emits high-quality white light with nearly ideal Commission Internationale de I’Eclairage (CIE) coordinates of (0.33, 0.34), a high color rendering index (CRI) value of approximately 85 and a moderately correlated color temperature (CCT) value of 5740 K. Such a strategy can be widely utilized for other fluorescent molecules and luminescent MOFs to design white-light-emitting materials.