可见光下发绿光的聚苯乙烯/CdTe复合材料的制备及光学性能研究  

Preparation and Luminescence Property of Polystyrene/CdTe Composites Emitting Green Light Under Visible Light

作　　者：王文[1] 林美娟[1] 黄丽梅[1] 苏棉棉[1] 

机构地区：[1]福建师范大学化学与材料学院,福建福州350007

出　　处：《中国塑料》2010年第2期30-34,共5页China Plastics

基　　金：福建省自然科学基金项目(2006J0250)

摘　　要：首先合成了带正电荷的十二烷基二甲基乙烯基卞基氯化铵,通过静电作用将其与用巯基丙酸修饰的带负电荷的CdTe纳米量子点结合,得到包覆有CdTe量子点的可聚合性的单体,将其与苯乙烯本体共聚后得到可见光下可发绿光的聚苯乙烯(PS)/CdTe复合材料。采用红外光谱、扫描电子显微镜、透射电子显微镜表征其结构,并用紫外可见光吸收光谱、荧光光谱测试其光学性能。结果表明,在紫外到可见光区域(380～480nm)激发下,该复合材料均可发出绿光。当包覆有CdTe纳米量子点的可聚合性单体的含量为1.2%(质量分数,下同)时,材料的荧光量子效率可达到0.096。The dodecyl vinylbenzyldimethylammonium chloride was synthesized, which subsequently encapsulated CdTe quantum dot via electrostatic reaction and bulk free radically copolymerized with styrene. The structure and optical properties of the obtained polystyrene/CdTe composites were investigated using Fourier transform infrared spectroscopy （FT-IR）, transmission electron microscopy （TEM）, scan electron microscopy （SEM）, UV-visible absorption spectrum, and fluorescence spectrum. The polystyrene/CdTe composites emitted green light under ultraviolet and visible region （380-480 nm）. When the content of CdTe quantum dot bearing monomer was 1.2 wt %, the luminescence quantum yield of polystyrene/CdTe was 0. 096.

关 键 词：聚苯乙烯 碲化镉 量子点 复合材料 光学性能 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]