- An easy prepared double naphthalene Schiff-base for highly selective sensing of cyanide via the dipolymer in aqueous solution
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A highly selective chemosensor based on an easy-to-prepare double naphthalene Schiff-base (R) is reported for the colorimetric and fluorometric dual-channel sensing of cyanide by taking advantage of the dipolymer in DMSO-H2O (8:2, v/v) HEPES buffer (pH 7.21) solution. The detection of cyanide was carried out via the nucleophilic attack of cyanide anion on the C = O of the probe's tautomer with a 1:1 binding stoichiometry, which could be confirmed by 1H NMR and MS studies. The detection limit of R for the determination of cyanide was estimated to be 8.434 × 10- 9 M. And other anions, including F-, Cl-, Br-, I-, AcO-, and, had nearly no influence on the probing behaviour. The test strips based on R were fabricated, which could act as convenient and efficient CN- test kits.
- Qu, Wenjuan,Gao, Guoying,Shi, Bingbing,Zhang, Peng,Wei, Taibao,Lin, Qi,Yao, Hong,Zhang, Youming
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- A highly selective dual-channel Hg2+ chemosensor based on an easy to prepare double naphthalene Schiff base
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A non-sulfur chemosensor based on an easy to prepare double naphthalene Schiff base is reported for the colorimetric and fluorometric dual-channel sensing of Hg2+ ions by taking advantage of the twisted intramolecular charge transfer (TICT) mechanism. This work provides a novel approach for the selective recognition of mercury ions. Moreover, this sensor serves as a potential recyclable component in sensing materials and the complex L-Hg2+ (L = 1-[(2-naphthalenylimino)methyl]-2-naphthalenol) can therefore be used as a fluorescent sensor for iodine anions. Notably, the color changes are very significant and all the recognition and recycling processes can be observed by the naked eye.
- Zhang, Youming,Shi, Bingbing,Zhang, Peng,Huo, Jianqiang,Chen, Pei,Lin, Qi,Liu, Jun,Wei, Taibao
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- A double-naphthalene Seaveralkali cyamic radical ion sensor and its synthesis and use (by machine translation)
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The invention discloses a double-naphthalene Seaveralkali cyamic radical ion sensor, is using ethanol as solvent, glacial acetic acid as a catalyst, 2 - hydroxy - 1 - angla formaldehyde and β - naphthylamine as the substrate of reaction refluxing reaction, after the reaction cooling, filtering, washing, recrystallization of shall. The sensor can be at room temperature to the cyan ion have very rapid fluorescent intensity response (_AOMARKENCODELTX0AO _ 30s), and with the cyan ion of the response identification is not affected by the interference of the other coexistence anion, to the mercury ion identification of the minimal detection limit has reached 8.434 × 10- 9 M, with high selectivity, high sensitivity and the like, is a collection with very high use value of the cyan ion identification material. The invention also preparing the load the sensor molecule CN- Detection test paper, can be conveniently and quickly cyanide ion detection in water. (by machine translation)
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Paragraph 0034; 0035; 0037
(2017/08/25)
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