标题：Synthesis of ultra - stable copper nanoclusters and their potential application as a reversible thermometer
作者：Shi, Yu-e; Luo, Shaojuan; Ji, Xiaojing; Liu, Fuwei; Chen, Xian; Huang, Yang; Dong, Lei; Wang, Lei
作者机构：[Shi, Yu-e; Liu, Fuwei; Chen, Xian; Huang, Yang; Wang, Lei] Shenzhen Univ, Coll Mat Sci & Engn, Shenzhen Key Lab Polymer Sci & Technol, Shenzhen 51806 更多
通讯作者地址：[Huang, Y; Wang, L]Shenzhen Univ, Coll Mat Sci & Engn, Shenzhen Key Lab Polymer Sci & Technol, Shenzhen 518060, Peoples R China.
摘要：A new strategy for the synthesis of luminescent copper nanoclusters (Cu NCs), by virtue of the reduction of Cu2+ using ascorbic acid and the protection of polyvinylpyrrolidone at 75 degrees C, was reported. Blue emitting Cu NCs with photoluminescence (PL) quantum yield of 12% and high stability up to at least 1 month were obtained. Moreover, the PL of Cu NCs showed a reversible response to temperature, and a linear relationship between PL intensity and temperature even after 10 cycles of repeated heating and cooling process was obtained, indicating great potential application in thermal sensors.