Preparation,characterization and biocompatibility of aspartic acid modified CdTe quantum dots

• 作 者: Shui-Ping Liu Jia-Jia Fu Meng-Juan Li Lin Lin Xiao-Qiang Li Ming-Qiao Ge
• 机 构: Key Laboratory of Eco-Textiles,Ministry of Education(Jiangnan University),College of Textile & Cloth
• 出 处: Chinese Chemical Letters
• 发表日期: 2014年06期
• 关键词: CdTe aspartic cytotoxicity tunable preparing resultant linkage dispersed covalen

This study aims at preparing water soluble aspartic acid(ASP) modified CdTe quantum dots with tunable fluorescence emission controlled by reaction time.The size of the synthesized CdTe quantum dots was evaluated using transmission electron microscope(TEM) and also calculated based on their UV-vis spectra.The optical properties of TCA-CdTe quantum dots were characterized by UV-vis and fluorescence(FL) spectroscopy.The red-shift in the UV-vis absorption and FL emission with the increase of reaction time was observed.The biocompatibility examination indicated that the ASP modified CdTe QDs had low cytotoxicity.

This study aims at preparing water soluble aspartic acid (ASP) modified CdTe quantum dots with tunable fluorescence emission controlled by reaction time. The size of the synthesized CdTe quantum dots was evaluated using transmission electron microscope (TEM) and also calculated based on their UV- vis spectra. The optical properties of TCA-CdTe quantum dots were characterized by UV-vis and fluorescence (FL) spectroscopy. red-shift in the UV-vis absorption and FL emission with the increase of reaction time was observed. biocompatibility examination indicated that the ASP modified CdTe QDs had low cytotoxicity.