Advances in Synthesis and Application of Copper Nanocluster Fluorescent Probes
Metal nanoclusters(MNCs),which are nanomaterials consisting of a few to nearly a hundred metal atoms,have attracted much attention due to the size effect and exhibit optical properties that differ from those of conventional metals.In recent years,with the increasing research on MNCs,various metal(e.g.,Au,Ag,Pt,Cu,and alloys)nanoclusters have been prepared.Among them,copper nanoclusters(CuNCs)have size-dependent and tunable fluorescence,mild synthesis conditions,low preparation cost,non-toxicity,and are chemically stable,which are more advantageous than conventional semiconductor nanocrystals,quantum dots(QDs),and organic dyes,and they have a promising future for chemical and bioanalytical applications.Synthesis of CuNCs in recent years are introduced in terms of"turn-off"and"bottom-up"methods,and their application fields are systematically reviewed based on the fluorescence sensing mechanisms of"turn-off"and"turn-on"modes.A systematic review of the application fields of CuNCs is conducted,and the future development trend of CuNCs is prospected.It is believed that this review will help researchers to explore different sensing mechanisms from a deeper perspective,to construct more accurate,efficient and reliable fluorescent probes.
万方数据
维普
