Abstract Based on rigid and twisted heterocyclic phthalazinone unit as the core skeleton, novel hierarchical porous carbazole-containing porous organic polymers (PCMOPs) were successfully constructed through Friedel-Crafts reaction (PCMOP-Hs) and oxidation coupling reaction (PCMOP-Os), respectively, with anhydrous FeCl3 as catalyst. The structures of resultant PCMOPs were characterized by FT-IR, 13C CP-MAS NMR and WXRD. PCMOP-Hs displayed higher BET surface area (660–675 m2 g−1), CO2 uptake capacity (11.8–12.1 wt%, 273 K, 1 bar) and CO2/N2 selectivity (up to 78.46, IAST) than those of PCMOP-Os, respectively. Even though, PCMOP-Os both displayed high sensitivity and selectivity with the fluorescent quenching rate value up to 83% for 2,4-dinitrotoluene (DNT) and 70% for nitrobenzene (NB) in low concentration (10−2 mol/L). The properties along with large-scale and low-cost preparation make these hierarchical POPs potential candidates for gas storage and separation as well as fluorescence detection of explosives application.

中文翻译：

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含酞嗪酮和咔唑部分的分层多孔有机超交联聚合物用于气体吸收和荧光特性

摘要 以刚性和扭曲的杂环酞嗪酮单元为核心骨架，分别通过弗瑞德-克来福特反应（PCMOP-Hs）和氧化偶联反应（PCMOP-Os）成功构建了新型分层多孔含咔唑多孔有机聚合物（PCMOPs）。 ，以无水三氯化铁为催化剂。所得PCMOPs的结构通过FT-IR、13C CP-MAS NMR和WXRD表征。PCMOP-Hs 显示出比 PCMOP 更高的 BET 表面积（660-675 m2 g-1）、CO2 吸收能力（11.8-12.1 wt%，273 K，1 bar）和 CO2/N2 选择性（高达 78.46，IAST） -Os，分别。尽管如此，PCMOP-Os 都表现出高灵敏度和选择性，2,4-二硝基甲苯 (DNT) 的荧光猝灭率值高达 83%，低浓度 (10−2 mol/L) 硝基苯 (NB) 的荧光猝灭率高达 70% .