Reversible mechanochromic studies on AIE-inspired smart materials and their applications in HCHO sensing
Huijun Li, Yanan Wang, Zhouqing Xu
Abstract
C NMR spectra, TEM and powder X-ray diffraction results, the fluorescence transformation was mainly attributed to the changes in the twisted ethyl core and the multiple rotational phenyl rings, as well as the aggregation degree. Based on these findings, we designed an adjustable formaldehyde probe with excellent performance. The detection limit of formaldehyde in aqueous solutions is calculated as 35 ppb, which is much lower than the concentration that is harmful to health (20 ppm). The extremely high sensitivity to formaldehyde makes it have potential application prospects in practical formaldehyde detection.
Topics & Concepts
FormaldehydeFluorescenceDetection limitMaterials scienceAqueous solutionProton NMRSmart materialDiffractionPowder diffractionPhotochemistryAnalytical Chemistry (journal)ChemistryNanotechnologyOrganic chemistryChromatographyCrystallographyOpticsPhysicsLuminescence and Fluorescent MaterialsMolecular Sensors and Ion DetectionPorphyrin and Phthalocyanine Chemistry