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A visual test paper based on Pb(ii) metal–organic nanotubes utilized as a H₂S sensor with high selectivity and sensitivity

Author:
Xin, Xuelian, Dai, Fangna, Li, Fugang, Jin, Xin, Wang, Rongming, Sun, Daofeng
Source:
Analytical methods 2017 v.9 no.21 pp. 3094-3098
ISSN:
1759-9679
Subject:
analytical methods, byproducts, carboxymethylcellulose, coatings, fluorescence, glass, hydrogen sulfide, lead, nanotubes, paper
Abstract:
The fluorescent Pb(ii)–metal–organic nanotube, CD-MONT-2, which possesses a large {Pb₁₄} metallamacrocycle, is synthesized by a modified biphasic liquid–solid–liquid (BLSL) strategy. This strategy takes advantage of solid cyclohexanol to avoid generation of by-products, and is suitable for producing CD-MONT-2 on a large scale. Importantly, water-stable CD-MONT-2 can be easily made into H₂S test papers by coating a solution mixture of sodium carboxymethyl cellulose and CD-MONT-2′ on glass plates, which have the characteristics of high efficiency, rapidity, and visualization based on its fluorescence “turn-off” response. The CD-MONT-2 based visual test papers can be used without pretreatment and possess excellent sensitivity and stability.
Agid:
6384704