Multilayered films incorporating CdTe quantum dots with tunable optical properties for antibacterial application

作者：Li, Xuelian; Lu, Zhisong^*; Li, Qing

来源：Thin Solid Films, 2013, 548: 336-342.

DOI：10.1016/j.tsf.2013.09.088

• Quantum dot
• Layer-by-layer assembly
• Antibacterial activity
• Optical property
• Multiple functions

Tunable absorption/emission and antibacterial activity are highly desirable for antibacterial decorative coating layers. In this study, films with both tunable optical and effective antibacterial properties were fabricated with cadmium telluride quantum dots (QDs) and poly-L-lysine (PLL) via layer-by-layer assembly. Absorption and photoluminescence spectra as well as surface morphology were examined to monitor the film growth. The films are fabricated in a logarithmic growth mode, exhibiting effective antibacterial activity against Escherichia coli and good biocompatibility to Hela cells. By changing sizes of the incorporated QDs, optical properties of the films can be easily tailored. The PLL/QDs' multilayered films may be used as colorful coating layers for applications requiring both unique optical and antibacterial properties.

• 出版日期2013-12-2
• 单位西南大学