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基于硼二吡咯亚甲基类(BODIPY)衍生物的合成,光谱及汞离子识别(英文) 总被引:1,自引:0,他引:1
The synthesis and sensing properties of a new BODIPY derivative 1 are outlined. 1 shows fluorescence “turn-on” and colorimetric responses with high selectivity toward Hg2+ over the other metal cations. Coordination of Hg2+ influences the electronic properties of the receptor at meso-position and alter the efficiency of non-radiative decay, hence increase the fluorescence intensity and red shift the absorption spectrum. 相似文献
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A new fluorogenic ionophore has been prepared by conjugating calix[4]-crown-5 ether with boron-dipyrromethene fluorophore. The ionophore exhibited a pronounced selective ON-OFF type response toward Ca2+ ions over other physiologically important metal ions of Na+, K+, and Mg2+. The interaction with Ca2+ ions resulted in very efficient quenching of fluorescence at 507 nm excited by relatively long wavelength irradiation at 480 nm. The selectivity ratios toward Ca2+ ions over other tested physiologically important metal ions were larger than 180 in aqueous 95% MeOH solution. 相似文献
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