Spectrochim Acta A Mol Biomol Spectrosc 2019 Jul 10;218:263-270. Epub 2019 Apr 10.
Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China; Research Center of Gansu Military and Civilian Integration Advanced Structural Materials; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, China.
Recently, ultrasensitive detection and multi-guest sensing have received extensive attention due to their high sensitivity and efficiency. Herein, we report a novel approach to achieve ultrasensitive detection of multi-analyte. This approach is concluded as "rationally introduce Aggregation-Induced Emission (AIE) into chemosensor". According to this approach, by rationally introducing self-assembly moiety, the obtained chemosensor DNS could serve as a novel AIEgen and show strong AIE in DMSO/HO (water fraction 80%) binary solution. Interestingly, a simple fluorescent sensor array based on the DNS has been developed. This sensor array could selectively sense Fe, Al, HPO and L-Arg in water solution. More importantly, this sensor array shows ultrasensitive detection for Fe, Al and L-Arg. The LODs of the sensor array for Fe, Al and L-Arg are in the range of 3.54×10M to 9.42×10M. Moreover, HPO could realize the reversible detection of Fe in the DMSO/HO (water fraction 80%) solution. Meanwhile, DNS-based test papers and thin films were prepared, which could serve as test kits for convenient detection Fe, Al, and L-Arg in water. In addition, they could also act as efficient erasable fluorescent display materials.