Reactive sensing of gold (III) by coumarin tethered fluorescent probe through alkyne activation

A reaction-based scenario for fluorescence probing of Au(iii) ions in human cells and plants

“…8,9 Recent progress in sensing gold ions has enriched the current understanding of how fluorescent probes should be designed for gold ions. [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] To date, most published strategies for gold ion sensing rely on specific chemical reactions that exploit the alkynophilic [25][26][27][28][29][30][31][32] and/or Lewis acidic behavior 33 of gold ions. Gold is most often detected with reference to a structural modification of the probe's skeleton, which generates one of two optical signals: a change in color or fluorescence emission.…”