A fluorescent and colorimetric sensor for Al3+ based on a dibenzo-18-crown-6 derivative

A new receptor based on a dibenzo-18-crown-6 derivative is successfully synthesized and characterized. This receptor reveals selective recognition toward Al3 + ion, along with colorimetric and fluorometric dual-signaling responses based on internal charge transfer (ICT). Also, it can serve as a highly selective chemodosimeter for Al3 + with naked-eye detection.