Fluorescent chemosensor for Al3 + and resultant complex as a chemosensor for perchlorate anion: First molecular security keypad lock based on Al3 + and ClO4− inputs

A dipodal sensor detects Al3 + in HEPES buffered THF/H2O (7:3, v/v) through excited state proton transfer, representing a quenching at 355 nm and enhancement at 480 nm. The resulting aluminium complex (1.Al3 +) displays a highly selective response to perchlorate anion over other anions through the emergence of a new band at 428 nm. The chemical inputs of Al3 + and ClO4− satisfies the conditions of AND molecular logic gates and in a sequential manner generates an output which mimics the functions of a security keypad lock.

A dipodal sensor detects Al3 + in through excited state proton transfer. The resulting aluminium complex (1.Al3 +) displays a highly selective response to perchlorate anion. The chemical inputs of Al3 + and ClO4− satisfies the conditions of AND molecular logic gates and mimics the functions of a security keypad lock.Figure optionsDownload as PowerPoint slideHighlights
► Selective detection of Al3 + through excited state proton transfer mechanism operated in a dipodal organic chemosensor.
► The resulting aluminum complex with this sensor displays a highly selective response to ClO4− anion over other anions through the emergence of a new band.
► The chemical in-puts of Al3 + and ClO4− satisfy the conditions of AND molecular logic gate and in a sequential manner generates an out-put which mimics the functions of a security keypad lock.