硒化镉纳米粒子与碘化三甲氨基苯基卟啉钻复合膜光学性能研究

为了探索CdSe纳米粒子合成的最佳条件及其与碘化三甲氨基苯基卟啉钴（CoTAPPI）复合膜的光学性能，采用湿化学法合成了CdSe纳米粒子；利用逐层沉积法组装了CdSe—CoTAPPI复合膜。用紫外-可见吸收光谱监测了成膜过程。利用荧光光谱比较系统地研究了聚苯乙烯磺酸钠（PSS）、放置时间、热处理、紫外光照射等条件对复合膜发光性能的影响，结果发现复合膜的发光性能相对于单一组份的CASe纳米粒子和CoTAPPI都有很大程度改变。

Photoluminescence of Composite Films Assembled from CdSe Nanoparticles and Meso-tetra-(4-Trimethylaminophenyl) Porphyrin Cobalt Iodide

In order to explore the best conditions of CdSe nanoparticles and photoluminescence properties of CdSe nanoparticles and meso-tetra-(4-trimethylaminophenyl) porphyrin cobalt iodide composite film.CdSe nanoparticles were prepared by wet chemical method in the presence of sodium citrate as capping agent.Composite films of CdSe nanoparticles and mesotetra-(4-trimethylaminophenyl)porphyrin cobalt iodide(CoTAPPI) were assembled by stepwise deposition process.The deposition process was monitored by UV-vis absorption spectra.It was shown that the film was assembled layer by layer.The CdSe-CoTAPPI composite film not only extended the optical absorption spectrum into a wider visible range and effectively absorbed visible light,but also obtained a better spectral match to the solar spectra.The influences of sodium polystyrolsulfonate(PSS),placed time,heat-treatment and UV-radiation on photoluminescence of the composite films were studied in details.It was found that the photoluminescence properties of the composite films were greatly changed relative to CdSe nanoparticles and CoTAPPI.