Highly sensitive and selective Pd2+ sensor of naphthalimide derivative based on complexation with alkynes and thio-heterocycle.
A new fluorescent Pd2+ sensor , N-butyl-4-(p-methyloxy)-phenylethynyl-5-thiophenemethylamino-1,8-naphthalimide, was designed and synthesized. It showed highly selective on-off fluorescence changes for Pd2+ among the representative transition and heavy metallic cations, and its fluorescence was efficiently quenched by 5 equivalents of Pd2+ in buffer solution. The sensor also displayed a selective chromogenic behavior toward Pd2+ from yellow to black-red, which could be easily observed by the naked eye.
Duan
Liping
L
State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
Xu
Yufang
Y
Qian
Xuhong
X
D000480:Alkynes / Q000737:chemistry*; D002413:Cations, Divalent / Q000737:chemistry; D006571:Heterocyclic Compounds / Q000737:chemistry*; D015394:Molecular Structure; D053644:Naphthalimides / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry*; D012680:Sensitivity and Specificity; D013050:Spectrometry, Fluorescence; D013438:Sulfhydryl Compounds / Q000737:chemistry*
D000480:Alkynes; D002413:Cations, Divalent; D006571:Heterocyclic Compounds; D053644:Naphthalimides; D013438:Sulfhydryl Compounds; D010165:Palladium