A facile self-assembled film assisted preparation of CuGaS2 ultrathin films and their high sensitivity to L-noradrenaline

作者：Zhou, Qin; Kang, Shi-Zhao^*; Li, Xiangqing; Qin, Lixia; Mu, Jin^*

来源：Applied Surface Science, 2016, 363: 659-663.

DOI：10.1016/j.apsusc.2015.12.132

• CuGaS2
• Ultrathin film
• Self-assembly
• Photoluminescent probe
• L-noradrenaline

A dense CuGaS2 ultrathin film was prepared in an improved layer-by-layer self-assembled process followed by heat treatment and characterized with X-ray diffraction, scanning electron microscopy, UV-vis spectroscopy, and fluorescence spectroscopy. Meanwhile, the application of the as-prepared CuGaS2 ultrathin film in the trace detection of L-noradrenaline was explored as a photoluminescent probe. The results show that the tetragonal phase CuGaS2 film fabricated on the glass substrate is smooth and dense. And this CuGaS2 ultrathin film can exhibit a strong emission at 829 nm with full width at half maximum of approximate 12 nm. Furthermore, the as-prepared CuGaS2 ultrathin film possesses high sensitivity to L-noradrenaline with a detectable concentration of 2.83 ng cm(-2) when it is used as a photoluminescent probe, implying that it is a promising candidate in the field of biological and chemical sensing in future.

• 出版日期2016-2-15
• 单位上海应用技术大学