Detection of Amines with Fluorescent Nanotubes: Applications in the Assessment of Meat Spoilage

Abstract

Highly fluorescent nanotubes assembled from designed asymmetric perylene diimide molecules (PDIs) exhibit high sensitivity (lowering the existing detection limit to ppb levels) and selectivity to amines in the vapor phase, which renders them capable of monitoring and assessing the deterioration of meat.

A Versatile and Highly Selective Colorimetric Sensor for the Detection of Amines

“…Given the facile detection of amines in solution and on solid supports with MAF, we investigated its utility to sense amine vapors. Detection of amine vapors is important for various applications, including food spoilage, where volatile amines such as dimethylamine (DMA) and ammonia are released from aging meat . To evaluate the sensitivity of our sensor toward volatile amines, MAF was exposed to known concentrations of amine vapors.…”

Tunable Emission Color and Morphology of Organic Microcrystals by a “Cocrystal” Approach

“…Organic micro/nanocrystals have attracted widespread attention in recent years because of their unique physical and chemical properties . Additionally, these organic micro/nanocrystals have exhibited promising optoelectronic applications in organic field‐effect transistors, organic solid‐state lasers, optical waveguides, and sensors . Moreover, organic micro/nanocrystals are fundamentally different from their inorganic counterparts because of weak van der Waals intermolecular interactions, which impede the controlled fabrication of organic micro/nanocrystals with the desired morphology.…”

Quantitative analysis of biogenic polyamines in distilled drinks by direct electrospray ionization tandem mass spectrometry using a nanocontainer

“…In general, the direct sensing using supramolecular interactions involves a modification of a chemical/physical property of the target molecule that can be followed quantitatively. Direct sensing of amines in food has been evaluated using different supramolecular approaches involving mainly optical sensing . However, if the host‐guest binding is selective and supramolecular structures survive the electrospray ionization (ESI) process, leading to stable gas‐phase complexes, the resulting ESI‐MS or ESI‐MS/MS signals can be used for analytical purposes.…”

“…Direct sensing of amines in food has been evaluated using different supramolecular approaches involving mainly optical sensing. [18][19][20] However, if the host-guest binding is selective and supramolecular structures survive the electrospray ionization (ESI) process, leading to stable gas-phase complexes, the resulting ESI-MS or ESI-MS/MS signals can be used for analytical purposes. This concept has been applied to direct injection (infusion) analysis of small molecules using metal phthalocyanins, [21] low molecular weight explosives and carboxylic acids using cyclodextrins, [22,23] and drugs by following the formation of dimers [24] and clusters.…”