On-package ratiometric fluorescent sensing label based on AIE polymers for real-time and visual detection of fish freshness

Aggregates‐based fluorescence sensing technology for food hazard detection: Principles, improvement strategies, and applications

“…Despite directly adding to the already prepared detecting system, the form of aggregate‐based fluorescence sensors in food hazard detection can become more variable to reach the practical need for food safety monitoring in different scenarios. Researchers used MNC aggregates and AIE polymers to construct a solid‐phase packaging label; volatile biogenic amine gas generated from seafood can directly quench the fluorescence of AIE through an electron transfer mechanism (Liu et al., 2022; Zhang, Ma, et al., 2022). More and more research studies focus on the construction of on‐package label based on these sensors to visually detect food freshness and safety in real time; however, developing stable, sensitive, harmless labels are still challenging. Food matrices are complex in nature, and different nutrients might affect fluorescence results, exerting adverse influence on the detecting performance of the aggregate‐based sensors.…”

Aggregation-Induced Emission Fluorophore-Incorporated Curcumin-Based Ratiometric Nanoprobe for Hypochlorite Detection in Food Matrices

“…15 Recently, Li's group designed a ratiometric fluorescence sensing platform, consisting of a classical AIE fluorophore tetraphenylethylene (TPE)-labeled poly-(methacrylic acid) polymer as the sensitive part and rhodamine B as the internal reference, to report the levels of volatile amines for real-time and visual determination of fish freshness. 16 These successful cases clearly showed that AIE materials have huge application potentials in food safety analysis and assessment. Given this situation, Wang et results.…”

“…Li’s group employed an AIE luminogen as the fluorescence signal reporter incorporated into novel molecularly imprinted polymers for the development of a ratiometric fluorescence sensor toward rhodamine 6G in dried papaya and a beverage with a detection limit of 0.26 μM . Recently, Li’s group designed a ratiometric fluorescence sensing platform, consisting of a classical AIE fluorophore tetraphenylethylene (TPE)-labeled poly­(methacrylic acid) polymer as the sensitive part and rhodamine B as the internal reference, to report the levels of volatile amines for real-time and visual determination of fish freshness . These successful cases clearly showed that AIE materials have huge application potentials in food safety analysis and assessment.…”

Aggregation induced emission and volatile acid vapour sensing in acridine appended poly (aryl ether) based low molecular weight organogelator

“…9,10 Therefore, the development of AIE-based sensing in the solid state can be utilized as a facile, fast and highly selective sensing technique for the determination of volatile analytes, including acids, amines and other volatile organic substances. 11,12 Organogels form hierarchical architectures by selfassembly 13,14 through H-bonding, π-π stacking, van der Waals and electrostatic interactions 15 and metal ion coordination 16 with a gelator that exhibits an AIE property, which is often termed gelation induced emission enhancement (GIEE). [17][18][19][20] The three-dimensional porous network structure of a gel with a high surface-to-volume ratio enhances the adsorption, accumulation and diffusion of gaseous molecules, which enhance the sensitivity of the response.…”

“…9,10 Therefore, the development of AIE-based sensing in the solid state can be utilized as a facile, fast and highly selective sensing technique for the determination of volatile analytes, including acids, amines and other volatile organic substances. 11,12…”