Synthesis, structural analysis and sensing performance of a novel spirooxazine derivative as a turn-on fluorescence probe for Cu²⁺ detection with high selectivity and sensitivity

Photoswitchable Photochromic Chelating Spironaphthoxazines: Synthesis, Photophysical Properties, Quantum-Chemical Calculations, and Complexation Ability

“…37b Novel chemosensors based on new spirooxazines functioning as colorimetric or fluorescent probes with high selectivity and sensitivity for detection and analysis of metal ions have now been developed. 38 As mentioned in the previous section, the ability to detect metal ions is due to the fact that the closed form of spirooxazines, when interacting with metal ions, transforms into an open MC form with very different optical properties. Notably, some spirooxazine derivatives can demonstrate a large contrast in their second-order nonlinear optical (NLO) properties by interaction with metal ions and serve as efficient selective sensing probes for certain metal ions, as previously found.…”

“…A recent example in the work on the development of sensors with high selectivity and sensitivity, are the opto-chemical probes for trace amounts of cyanide, developed by Sanjabi et al, as well as the colorimetric photosensors of solvent polarity realized by photochromic spironaphthoxazine dye and its stimuli-responsive acrylic copolymer . Novel chemosensors based on new spirooxazines functioning as colorimetric or fluorescent probes with high selectivity and sensitivity for detection and analysis of metal ions have now been developed . As mentioned in the previous section, the ability to detect metal ions is due to the fact that the closed form of spirooxazines, when interacting with metal ions, transforms into an open MC form with very different optical properties.…”