Su Feifei, Liu Chenyu, Yang Yan, Ma Shulan, Sun Genban, Yang Xiaojing
Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China.
Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China.
J Colloid Interface Sci. 2017 Jun 15;496:353-363. doi: 10.1016/j.jcis.2017.02.039. Epub 2017 Feb 17.
This work demonstrates tunable and purified luminescence via one-step delamination of HPTS/OS-LRH composites (HPTS is trisodium 8-hydroxy-pyrene-1,3,6-trisulphonate, OS is sodium salt of 1-octane sulfonic acid, LRH is layered rare-earth hydroxide, R=Tb, Y) along with energy transfer. The HPTSOS-LTbYH composites presented varied luminescence behavior depending on their physical state. In solid state, dual-color luminescence was observed: blue-dominant emissions (437nm) for HPTSOS-LTbH, and blue- (437nm) to green-dominant (516nm) luminescence for HPTSOS-LTbYH. In delaminated state in famamide, purified luminescence was present: pure blue emission (440nm) for HPTSOS-LTbH and HPTSOS-LTbYH (y≥0.5), while pure bluish-green emission (498nm) for HPTSOS-LTbYH (y≤0.3). Both the delamination of the composites and energy transfer from layer Tb to HPTS contributed to the blue luminescence. The intriguing energy transfer process between photoactive inorganic hosts and organic guests can be utilized to fabricate hybrid materials with superior luminescence property.
这项工作通过对HPTS/OS-LRH复合材料（HPTS为8-羟基芘-1,3,6-三磺酸钠，OS为1-辛烷磺酸钠，LRH为层状稀土氢氧化物，R=Tb、Y）进行一步分层并伴随着能量转移，展示了可调节和纯化的发光特性。HPTSOS-LTbYH复合材料根据其物理状态呈现出不同的发光行为。在固态下，观察到双色发光：HPTSOS-LTbH呈现以蓝色为主的发射（437nm），而HPTSOS-LTbYH呈现从蓝色（437nm）到以绿色为主（516nm）的发光。在甲酰胺中的分层状态下，出现了纯化的发光：HPTSOS-LTbH和HPTSOS-LTbYH（y≥0.5）呈现纯蓝色发射（440nm），而HPTSOS-LTbYH（y≤0.3）呈现纯蓝绿色发射（498nm）。复合材料的分层以及从层状Tb到HPTS的能量转移都促成了蓝色发光。光活性无机主体与有机客体之间有趣的能量转移过程可用于制备具有优异发光性能的杂化材料。
