Porous organic polymers as a platform for sensing applications

Abstract

Sensing analysis is significantly important for human health and environmental safety. In this review, POPs used as platforms for various sensing applications have been summarized and discussed.

Fluorescent Covalent Organic Frameworks: A Promising Material Platform for Explosive Sensing

“…In addition, fluorescent sensors also play pivotal roles in bio-sensing, bio-imaging, and therapeutics (Ashton et al, 2015). Currently, the main fluorescent sensing materials can be divided into three main categories: inorganic (Bonacchi et al, 2011), organic (Wang et al, 2022), and inorganic-organic hybrid materials (Lustig et al, 2017). Compared with the inorganic and hybrid luminescent materials such as f-block rare-earth lanthanide complexes and nanoparticles and d-block transition-metal complexes and metal-organic frameworks (MOFs), pure organic fluorescent materials have exhibited their multiple advantages such as low toxicity, earth-abundance, excellent metabolism kinetics property for in vivo applications, low density, and malleability for wearable optoelectronics (Crowe et al, 2016).…”

Recent development of the fluorescence-based detection of volatile organic compounds: a mechanistic overview

“…Among these, organic fluorophores, which include small molecules, conjugated polymers, and framework systems, have great potential for the detection of a wide range of analytes due to their flexible synthesis, convenient processing, good biocompatibility, and reproducibility. 1,[29][30][31][32][33][34] Besides, they involve several distinct sensing mechanisms depending on their molecular structure and conformation, and thus need an elaborate discussion of the mechanistic approaches available in the current literature. Although a few review articles have been published in recent years, none of them have discussed a wide range of organic fluorophores, including small molecules, conjugated polymers, and framework systems for the detection of VOCs with an exhaustive analysis of the involved sensing mechanism.…”

“…Although a few review articles have been published in recent years, none of them have discussed a wide range of organic fluorophores, including small molecules, conjugated polymers, and framework systems for the detection of VOCs with an exhaustive analysis of the involved sensing mechanism. 1,[29][30][31][32][33][34] Most of the classical fluorophores exhibit strong fluorescence properties in their molecularly dispersed solution state only, whereas their fluorescence properties reduce drastically in the solid/aggregated state due to strong face-to-face p-p stacking among the aromatic moieties. This phenomenon is termed aggregation caused quenching (ACQ), a negative effect that restricts their real-world applications.…”

Fluorescent porous organic polymers for detection and adsorption of nitroaromatic compounds

“…While some instrumental techniques have been utilized for sensing of nitroaromatic compounds, such as fluorescence spectrometry and atomic adsorption spectrometry, complicated detection process (sample preparation and equipment operation) are generally required 26 . Comparatively, fluorescence-based methods have several advantages for the detection of nitroaromatic compounds, such as relatively simplicity, high sensitivity and selectivity 27 . For luminescent sensors, the reported work mainly includes: small organic molecules, metal–organic complexes, crystalline porous materials, etc 25 , 28 , 29 .…”