Dye Encapsulated Metal-Organic Framework for Warm-White LED with High Color-Rendering Index
Dye Encapsulated Metal-Organic Framework for Warm-White LED with High Color-Rendering Index
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用于高显色指数暖白光 LED 的染料封装金属有机框架
DOI：
10.1002/adfm.201501756
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发表时间：
2015-08-12
影响因子：
19
通讯作者：
Qian, Guodong
中科院分区：
文献类型：
--
作者：
Cui, Yuanjing;Song, Tao;Qian, Guodong
通过将有机染料封装到发光金属有机框架（MOF）的孔中来实现发白光的磷光体。通过离子交换法将红色荧光染料4-（对二甲氨基苯乙烯基）-1-甲基吡啶（DSM）和绿色荧光染料吖啶黄（AF）包封在蓝色荧光阴离子型有机荧光染料ZJU-28中，制备了ZJU-28 DSM/AF复合物。通过仔细调节染料DSM和AF的相对浓度，得到的ZJU-28 DSM/AF（0.02wt%DSM，0.06wt%AF）表现出宽带白色发射，理想的CIE坐标为（0.34，0.32），高的显色指数值为91，并且适度的相关色温值为5327 K。这种策略可以很容易地扩展到其他发光MOFs和染料，从而为开发白色发光材料开辟了新的视角。
A strategy by encapsulating organic dyes into the pores of a luminescent metal-organic framework (MOF) is developed to achieve white-light-emitting phosphor. Both the red-light emitting dye 4-(p-dimethylaminostyryl)-1-methylpyridinium (DSM) and the green-light emitting dye acriflavine (AF) are encapsulated into a blue-emitting anionic MOF ZJU-28 through an ion-exchange process to yield the MOFdye composite ZJU-28DSM/AF. The emission color of the obtained composite can be easily modulated by simply adjusting the amount and component of dyes. With careful adjustment of the relative concentration of the dyes DSM and AF, the resulting ZJU-28DSM/AF (0.02 wt% DSM, 0.06 wt% AF) exhibits a broadband white emission with ideal CIE coordinates of (0.34, 0.32), high color-rendering index value of 91, and moderate correlated color temperature value of 5327 K. Such a strategy can be easily expanded to other luminescent MOFs and dyes, thus opening a new perspective for the development of white light emitting materials.