D-谷胱甘肽及其同分异构体稳定的水相碲化镉量子点制备及其荧光性质的研究

Synthesis and study of CdTe QDs stabilized by D-GSH and 1-L-Glutamyl-D-Cysteinylglycine in aqueous solution

使用5-D-谷氨酰-D-半胱氨酰甘氨酸(D-谷胱甘肽)及其同分异构体1-L-谷氨酰-D-半胱氨酰甘氨酸作为稳定剂,在水溶液中合成了碲化镉(CdTe)量子点.通过控制反应回流时间,研究了在不同的反应时间内由2种同分异构体稳定的CdTe量子点的紫外光谱,发现分子结构的细微差别能够引起量子点的表面状态不同,进而导致制备的量子点荧光性质不同.通过荧光光谱研究了2种分子稳定CdTe纳米粒子荧光性质的差异,并结合紫外-可见光谱,讨论了引起2种CdTe量子点荧光性质不同的原因.

D-GSH and 1-L-Glutamyl-D-Cysteinylglycine were used as stabilizers to promote CdTe evolution in aqueous solution.We have studied the UV-Vis spectra of CdTe QDs by controlling reflux time and found that tiny differences between D-GSH and 1-L-Glutamyl-D-Cysteinylglycine in molecular structure can result in different surface states of CdTe QDs,leading to different fluorescent properties.We also discuss the reasons for these differences.