Wearable super-adsorptive fibrous equipment in situ grafted with porous organic polymers for carcinogenic fumigant defense and detoxification?

Journal of Materials Chemistry A Pub Date: 2020-10-27 DOI: 10.1039/D0TA07475F

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.

Graphical abstract: Wearable super-adsorptive fibrous equipment in situ grafted with porous organic polymers for carcinogenic fumigant defense and detoxification
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