Spectral switching of Naphthalimide-coumarin:deprotonation/protonation-induced color “off-on”and flu

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  1,8-naphthalimide and coumarin are two typical chromophore and widely employed as basic framework in constructing of various chemosensors, emitters, and light absorber.1,8-naphthalimide and coumarin are widely used as typieal green and blue emitter, respectively.It has been well understood from the published literature on sensors or fluorescent dyes that the PET (photo-induced electron transfer) and PCT (photo-induced charger transfer) are the most commonly exploited mechanisms to elucidate the interesting physico-chemical phenomena.
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