Carbazole-based porous organic polymers (CPOPs) and their derived carbon materials have been found to be promising candidates for many applications, such as gas adsorption and energy storage, due to their highly porous structure and nitrogen-containing functionalities. However, most of the reported CPOPs or CPOP-derived carbons are powder-like materials, which limit their industrial applications. Hereby, flexible nitrogen-doped porous carbon materials (FNPCs) were synthesized through in situ oxidative coupling polymerization in/on flexible biomass textiles and subsequent carbonization procedures. During the carbonization procedure, the microporous structure and the nitrogen in CPOPs were maintained. The CPOP-derived FNPCs possess good flexibility and relatively large specific surface area and pore volume, together with high nitrogen contents. In light of these merits, gas adsorption, separation, and preliminary sensing experiments were conducted. The carbon dioxide and methane adsorption capacities of the FNPC are 21.0 wt% and 3.5 wt% (at 273 K and 1.0 bar), respectively. Meanwhile, due to the interaction between CO₂ and the FNPCs, the materials can also be used for CO₂/N₂ separation and gas sensing, and a preliminary experiment on FNPC as a gas sensor for exhaled breath was conducted. More importantly, the materials are flexible and they can be easily assembled into gas adsorption devices and sensors.

中文翻译：

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聚咔唑和生物质衍生的柔性氮掺杂多孔碳材料，用于气体吸附和传感

基于咔唑的多孔有机聚合物（CPOP）及其衍生的碳材料由于具有高度的多孔结构和含氮功能，因此已成为许多应用（如气体吸附和能量存储）的有前途的候选者。但是，大多数报道的CPOPs或CPOP衍生的碳是粉末状材料，限制了它们的工业应用。因此，通过原位合成了柔性的氮掺杂多孔碳材料（FNPC）柔性生物质纺织品中/之上的氧化偶联聚合和随后的碳化程序。在碳化过程中，CPOP中的微孔结构和氮得以保持。源自CPOP的FNPC具有良好的柔韧性，相对较大的比表面积和孔体积以及较高的氮含量。鉴于这些优点，进行了气体吸附，分离和初步感测实验。FNPC的二氧化碳和甲烷吸附能力分别为21.0 wt％和3.5 wt％（在273 K和1.0 bar下）。同时，由于CO ₂和FNPC之间的相互作用，该材料也可用于CO ₂ / N ₂分离和气体传感，并进行了以FNPC作为呼气气体传感器的初步实验。更重要的是，这些材料具有柔韧性，可以轻松地组装到气体吸附装置和传感器中。