A naphthalene diimide dye with two side amine arm was prepared. Uv-Vis and fluorescence spectroscopic techniques studied its photophysical and solvatochromic characteristics in different solvents. Its fluorescence quenching mechanism has been carried out as a fluorescence probe model with graphene oxide as an efficient quencher. The results indicated that graphene plays an effective quencher against the naphthalene diimide molecule. The Stern-Volmer analysis results show a combination of two static and dynamic quenching mechanisms via an energy transfer process.
a b s t r a c tDesign and synthesis of a novel fluorophore for Hg 2+ ions detection, based on a new rhodamineanthracene derivative is reported. The fluorophore exhibited highly selective and sensitive reversible turn-on fluorescent response toward Hg 2+ ions, based on the ring-opening mechanism of the rhodamine spirolactam. The noticeable change from colorless to pink upon the addition of Hg 2+ ions could make it a suitable "naked eye" colorimetric sensor for Hg 2+ ions. The selective sensing of Hg 2+ ions in the presence of other metal ions and reversible nature of OFF-ON switching of sensor by Hg 2+ ions was studied. It provides an easy sensing of Hg 2+ ions in environmental and biological applications.
A naphthalene diimide dye with two side amine arm was prepared. Uv-Vis and fluorescence spectroscopic techniques studied its photophysical and solvatochromic characteristics in different solvents. Its fluorescence quenching mechanism has been carried out as a fluorescence probe model with graphene oxide as an efficient quencher. The results indicated that graphene plays an effective quencher against the naphthalene diimide molecule. The Stern-Volmer analysis results show a combination of two static and dynamic quenching mechanisms via an energy transfer process.
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