功能化PbS量子点的水相合成及结构表征  

Synthesis of Functional PbS Quantum Dot in Aqueous Solution and its Characterization

作　　者：孙伟[1] 江宏[1] 张灿英[1] 钟江华[1] 焦奎[1] 

机构地区：[1]青岛科技大学化学与分子工程学院,山东青岛266042

出　　处：《化学研究》2006年第2期47-49,共3页Chemical Research

基　　金：国家自然科学基金(20405008)资助项目

摘　　要：在水溶液中以Pb(NO3)2和Na2S为原料,巯基乙酸为稳定剂,合成了水溶性PbS量子点.用透射电子显微镜、扫描电子显微镜、粒度分析仪和红外光谱对PbS量子点进行了表征,结果表明所合成的PbS量子点的平均粒径为25 nm左右,分散性好,且巯基乙酸成功修饰于PbS纳米粒子表面,使其具有进一步与生物分子偶联的作用.Water soluble PbS quantum dots were synthesized in aqueous solution using Pb（NO3） 2 and Na2S with mercaptoacetic acid as stabilizer. The PbS nanoparticle was furthur characterized by transmission electron microscopy （TEM）, scan electron microscopy （SEM）, size distribution instrument and IR spectra. The results showed that PbS nanoparticles were mono-dispersed with average size of about 25 nm. Because the mercaptoacetic acid was successfully modified on the surface of PbS nanopartiele, it could be furthur bonded with biomolecules.

关 键 词：硫化铅 量子点 巯基乙酸 纳米材料 

分 类 号：TB383[一般工业技术—材料科学与工程]