High-performance visualized sensing materials: from single mode to tripe mode

The design and development of visualized sensing materials with the highly sensitive, anti-interferent and on-site detection capabilities is of great significance to chemical sensing in complex practical scenarios. We have recently proposed serial novel strategies for the construction of visualized sensing materials from single mode to triple mode: 1) A highly sensitive (nanogram level), rapid (in seconds) and facile colorimetric probe was designed by the effective electrostatic interaction. 2) A colorimetric and fluorescent dual mode organic small-molecule probe was designed by finely modulating the electron-donating capability of thiol to obtain the excellent sensing performances; A chromone-based ligands grafted QDs system was designed and showed complete EET from QDs to the ligands drived specifically by trace analyte with fluorescent and colorimetric dual-mode responses. 3) An ultra-accurate tri-mode visualization platform through colorimetric, fluorescent and UCL visualization analysis was constructed based on an elaborated designed organic small-molecule probe coupled with picked UCNPs through inner filter effect (IFE).