کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
26011 | 43929 | 2016 | 8 صفحه PDF | دانلود رایگان |
• A novel unsymmetrical photochromic diarylethene with a carboxamidoquinoline unit was synthesized and characterized.
• The diarylethene exhibited multi-responsive photochromic behaviors by the stimulation of Zn2+/EDTA and UV/vis and could serve as a highly selective ratiometric fluorescent chemosensor to detect Zn2+ ion.
• A logic circuit was constructed by using the fluorescence intensity as the output signal with the inputs of the combinational stimuli of Zn2+/EDTA and UV/vis.
An asymmetrical diarylethene was designed and synthesized as a ratiometric and fluorescent turn-on chemosensor for Zn2+ by conjugating diarylethene bromide with 2-amino-N-(quinolin-8-yl)acetamide. The diarylethene was highly selective toward Zn2+ ion with obvious fluorescence change. When triggered by Zn2+ ion, the diarylethene displayed a remarkable red-shift of fluorescence emission (100 nm) and an obvious increase in fluorescence intensity at 530 nm with a concomitant color change (dark to bright green). Job’s plot and electrospray ionization mass spectrometry analysis implied that the diarylethene bound to Zn2+ with a binding stoichiometry of 2:1. Additionally, the logic gate based on Zn2+/EDTA and UV/vis titration has also been described.
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 330, 1 November 2016, Pages 22–29