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您现在的位置:中国聚合物网 > 资料 > Colorimetric 的搜索结果 共有结果18,当前从第1条到第10条,本次搜索耗时0
 
A Reaction-Based Colorimetric Fluoride Probe: Rapid “Naked-Eye” Detection and Large Absorption Shift
关键字:azobenzenes, charge transfer, colorimetric
Taking advantage of both the well-known azobenzene structure and the special fluoride-promoted cleavage reaction of the SiO bond, a new ratiometric colorimetric probe (F-1) toward the fluoride anion was designed and synthesized by using intramolecular charge transfer (ICT) as a signal mechanism. Upon the addition of F ions, the probe displayed apparent color changes from colorless to deep blue...
http://www.polymer.cn/research/sy_info17356
 
Inorg. Chem. Comm., A novel highly selective colorimetric sensor for Ni(II) ion using coumarin derivatives
关键字:Coumarin, Colorimetric sensor
A new coumarin based colorimetric nickel sensor 1 with high selectivity and sensitivity toward Ni2+ ion was reported. The absor ption maximum of 1 shows a large red shift from 341 nm to 540 nm (Δ = 200 nm) in the presence of Ni2+ ion, and the resulted color change from colorless to pink upon addition of Ni2+ is very easily observed by the naked eye, while other metal ions, such as Zn2+,Cd2+, Cu2...
http://www.polymer.cn/research/sy_info14947
 
Nanomolar colorimetric quantitative detection of Fe3+ and PPi with high selectivity
关键字:colorimetric quantitative detection
A novel rhodamine and 8-hydroxyquinoline-based derivative was synthesized, which is shown to act as a calorimetric chemosensor for Fe3+ in aqueous solution with high selectivity over various environmentally and biologically relevant metal ions and anions with a distinct color change from colorless to pink in very fast response time (<1 min). Fe3+ can be detected quantitatively in the concentrat...
http://www.polymer.cn/research/sy_info19493
 
Nanomolar colorimetric quantitative detection of Fe3+ and PPi with high selectivity
关键字:colorimetric quantitative detection
A novel rhodamine and 8-hydroxyquinoline-based derivative was synthesized, which is shown to act as a calorimetric chemosensor for Fe3+ in aqueous solution with high selectivity over various environmentally and biologically relevant metal ions and anions with a distinct color change from colorless to pink in very fast response time (<1 min). Fe3+ can be detected quantitatively in the concentrat...
http://www.polymer.cn/research/sy_info19492
 
Nanomolar Cu2+ and F- naked-eye detection with a 1,8-naphthalimide-based colorimetric probe
Based on hydrolysis reaction by Cu2+ and intermolecular hydrogen bond, a dual functional colorimetric probe, a novel 1,8-naphthalimide derivative was designed and synthesized for Cu2+ and F- naked-eye recognition with high sensitivity and excellent selectivity. The probe can detect Cu2+ and F- quantitatively in concentration range of 0-16.7 mu M and 0-23.3 mu M, and the detection limit could be as...
http://www.polymer.cnt//ss/yumm/publicationsshow_10781.html
 
Nanomolar colorimetric quantitative detection of Fe3+ and PPi with high selectivity
A novel rhodamine and 8-hydroxyquinoline-based derivative was synthesized, which is shown to act as a calorimetric chemosensor for Fe3+ in aqueous solution with high selectivity over various environmentally and biologically relevant metal ions and anions with a distinct color change from colorless to pink in very fast response time (<1 min). Fe3+ can be detected quantitatively in the concentrat...
http://www.polymer.cnt//ss/yumm/publicationsshow_10774.html
 
A Selective, Colorimetric and Ratiometric Chemosensor for Hg2+ and its Application as Test Papers
Chemosensors provide an efficient and low cost approach to the detection of various metal ions and small molecules. In the present work, we present detailed investigation of a simple, easily-prepared yet efficient coumarin-based sensor for Hg2+. The sensor is based on a fluorescent group of coumarin. When exposed to Hg2+, the sensor solution shows significant color change from yellow to red and ...
http://www.polymer.cnt//ss/zhouhongwei/publicationsshow_10058.html
 
Novel Hemicyanine Dye as Colorimetric and Fluorometric Dual-modal Chemosensor for Mercury in Water
A novel water soluble Hg2+-selective chemosensor 1 with hemicyanine as fluorescent reporting group and NO2Se2 chelating unit as ion binding site was reported. Chemosensor 1 shows a specific Hg2+ selectivity to discriminate between Hg2+ and chemically close ions in junction with a visible colorimetric change from red to colorless, leading to potential production of both “naked-eye” and ...
http://www.polymer.cnt//ss/zengxianshun/publicationsshow_3313.html
 
A colorimetric sensor for determination of cysteine by carboxymethyl cellulose-functionalized gold nanoparticles
A simple and sensitive colorimetric method for cysteine detection was established based on the carboxymethyl cellulose-functionalized gold nanoparticles (CMC-AuNPs). The nanoparticles were directly synthesized with sodium carboxymethyl cellulose by a simple approach, which would protect particles against salt-induced aggregation. Then the CMC-AuNPs solution exhibited a high colorimetric selec...
http://www.polymer.cnt//ss/rgliu/publicationsshow_3126.html
 
Fluorescent and Colorimetric Probes for Mercury(II): Tunable Structures of Electron Donor and p-Conjugated Bridge
关键字:charge transfer, colorimetry, fluorescence, mercury,sensors
A new series of intramolecular-charge-transfer (ICT) molecules (compounds 1, 2, and 3) were synthesized by attaching various electron-donating thiophenes groups to a triphenylamine backbone with an aldehyde group as the electron acceptor. Based on the protection reaction between ethanethiol and aldehyde, the corresponding dithioacetals (compounds S1, S2, and S3) were prepared to serve as novel c...
http://www.polymer.cn/research/sy_info17351
 
 
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