Luminescent and Swellable Conjugated Microporous Polymers for Detecting Nitroaromatic Explosives and Removing Harmful Organic Vapors

Long Pan, Zilu Liu, Mi Tian, Bob Schroeder, Abil E. Aliev, Charl F. J. Faul

Research output: Contribution to journalArticle

Abstract

Four new conjugated microporous polymers (CMPs) were synthesised by Buchwald-Hartwig cross-coupling reaction of tri- and tetra- functionalised precursors to yield materials with tuneable surface area and pore size distribution. This approach yielded LPCMP1 – 4, CMPs with significantly higher Brunauer–Emmett–Teller (BET) surface area (more than five times higher) than other related BH-based CMPs. These CMP materials possess not only high BET specific surface areas and high chemical and thermal stabilities, but also exhibit outstanding swellability. To the best of our knowledge, swellable behaviour was found for CMPs for the first time, with the greatest degree of swelling for methanol reaching 16.5 and 16.3 mL g–1 for of LPCMP1 and LPCMP3, respectively. Owing to their excellent swellability, we further studied the adsorption capacity of these CMPs for different toxic organic vapours (including toluene and methanol). LPCMP1 and LPCMP3 adsorbed 124 mg g–1 and 117 mg g–1 respectively, toluene at its saturated vapor pressure. For methanol, the adsorption capacities of LPCMP1 and LPCMP3 were up to 250 mg g–1 and 215 mg g–1, respectively, which is the highest recorded value when compared with published data for CMPs, HCPs, MOFs and porous carbons. These materials are promising candidates for the removal and elimination of hazardous organic vapors and chemical warfare agents. Moreover, all the polymers exhibit strong luminescence and show high sensitivity to nitroaromatic explosives. LPCMP2 LPCMP4, exhibit high selectivity for TNT, and may be suitable as new candidates to selectively detect TNT for security or environmental applications.
Original languageEnglish
JournalACS Applied Materials and Interfaces
Early online date2 Dec 2019
DOIs
Publication statusE-pub ahead of print - 2 Dec 2019

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Luminescent and Swellable Conjugated Microporous Polymers for Detecting Nitroaromatic Explosives and Removing Harmful Organic Vapors. / Pan, Long; Liu, Zilu; Tian, Mi; Schroeder, Bob; Aliev, Abil E.; Faul, Charl F. J.

In: ACS Applied Materials and Interfaces, 02.12.2019.

Research output: Contribution to journalArticle

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