Detection of HSO4 − Ion Based on the Hydrolysis of Diketopyrrolopyrrole-derived Schiff Base with Chromogenic and Fluorogenic Dual Signals
作者:Lingyun Wang、Lingling Yang、Derong Cao
DOI:10.1007/s10895-014-1421-0
日期:2014.7
diketopyrrolopyrrole-based Schiffbase L was synthesized and its anion sensing behavior was explored. L showed exclusive response toward HSO4 − ion and also distinguished HSO4 − from other anions by color changes (from dark red to orange) and 21 fold fluorescence enhancement at 370 nm in aqueous solution (THF/H2O = 8/1, v/v). The sensing mechanism was suggested to proceed via a hydrolysis process. The results
合成了一种新的基于二酮吡咯并吡咯的席夫碱L,并探索了其阴离子传感行为。大号,发现其朝HSO独家响应4 -离子,并且还区分HSO 4 -从由颜色改变其它阴离子(从暗红色至橙色)和在水溶液中370纳米21倍的荧光增强(THF / H 2 O = 8/1, v/v)。建议传感机制通过水解过程进行。结果提供了比色和荧光分析,以选择性地检测 HSO 4 的存在-范围广泛的其他干扰阴离子。结果可能用作双比色荧光探针,用于监测生理和环境系统中的HSO 4 -水平。
Tetraphenylethene-functionalized diketopyrrolopyrrole solid state emissive molecules: enhanced emission in the solid state and as a fluorescent probe for cyanide detection
作者:Lingyun Wang、Linhui Zhu、Lin Li、Derong Cao
DOI:10.1039/c6ra10073b
日期:——
Tetraphenylethene-functionalized diketopyrrolopyrrole solid state red-emissive molecules (DPP1andDPP2) with enhanced emission in the solid state have been developed.
四苯基乙烯官能化的二酮吡咯吡咯固态红发射分子(DPP1和DPP2)已经被开发出来。
A cyanide-selective colorimetric “naked-eye” and fluorescent chemosensor based on a diketopyrrolopyrrole–hydrazone conjugate and its use for the design of a molecular-scale logic device
作者:Lingyun Wang、Xianggen Chen、Derong Cao
DOI:10.1039/c6ra21669b
日期:——
synthesized as a selective fluorescent and colorimetric chemosensor for cyanide without interference from other common anions including fluoride and acetate. The spectral responses of 1 to cyanide were studied: an approximately 130 nm red shift in absorption spectra (from λmax-ab = 516 nm to λmax-ab = 646 nm and the color change from pink to indigo) and “turn-off” emission response was observed. The
A colorimetric probe based on diketopyrrolopyrrole and tert-butyl cyanoacetate for cyanide detection
作者:Lingyun Wang、Linhui Zhu、Derong Cao
DOI:10.1039/c5nj01214g
日期:——
Furthermore, Michael addition of cyanide to 1 elicited 94% fluorescence quenching at 640 nm accompanied by appearance of a weak new emission at 560 nm, which constituted the fluorescence signature for cyanidedetection. The detection limits were determined to be 0.75 μM using the fluorescence spectral changes, which were far lower than the WHO guideline of 1.9 μM. Moreover, 1-based test strips could successfully
A nitroolefin functionalized DPP fluorescent probe for the selective detection of hydrogen sulfide
作者:Lingyun Wang、Xianggen Chen、Derong Cao
DOI:10.1039/c6nj03432b
日期:——
functionalized probe DPP-NO2 was designed and synthesized as a selective fluorescent probe for detection of hydrogen sulfide (H2S). The specific reduction reaction between the nitro group and H2S gave 800-fold fluorescenceturn-on at 550 nm in the fluorescence emission spectrum, along with a 21 nm blue-shift from 506 nm to 485 nm in the absorption spectrum as well as a color change from pink to light