Wearable super-adsorptive fibrous equipment in situ grafted with porous organic polymers for carcinogenic fumigant defense and detoxification. Issue 45 (12th November 2020)

• Record Type: Journal Article
• Authors: Tang, Peixin; Ji, Bolin; Sun, Gang
• Is Part Of: Journal of materials chemistry. Volume 8:Issue 45(2020)
• Page Start: 24128
• Page End: 24136
• Publication Date: 2020-11-12
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d0ta07475f
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : SAFE-cotton is fabricated through in situ synthesis of nucleophilic porous organic polymers on cotton for fumigant adsorption, detoxification, and colorimetric warning. Abstract : Highly porous nucleophilic organic polymers (Nu-POPs) were synthesized in situ on cotton fibers by a condensation reaction between cyanuric chloride and melamine, and the products were employed as robust, wearable, and flexible cotton-based super-adsorptive fibrous equipment (SAFE-cotton) against exposure to vaporous pesticides. The covalent growth of the Nu-POP on surfaces of cotton fibers retained the physical characteristics of the Nu-POP to the greatest extent, which include specific surface area and porosity, while the cotton fabrics still remained wearable. The SAFE-cotton can repeatedly adsorb fumigant vapors instantly ( i.e., equilibrium is reached in one minute) and massively ( i.e., methyl iodide adsorption capacity of 596.88 mg g −1 ). The nitrogen atoms in the triazine rings of the Nu-POP on the SAFE-cotton are nucleophilic to detoxify sequestered fumigants during long-term use and storage. A colorimetric signal could reveal the failure of the SAFE-cotton functions due to the detoxification of the fumigants and the formation of a conjugated structure of the Nu-POP. The success of achieving SAFE-cotton without significant loss of the Nu-POP performance in terms of rapid fumigant adsorption and detoxification is expected to guide the design of next-generation protective materials with the advantages of flexible, wearable and easily processible properties.