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Fluorescent cellulose nanocrystals based on AIE luminogen for rapid detection of Fe in aqueous solutions. | LitMetric

Fluorescent cellulose nanocrystals based on AIE luminogen for rapid detection of Fe in aqueous solutions.

RSC Adv

Shenzhen Institutes of Advanced Electronic Materials, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences Shenzhen 518055 China

Published: August 2022

AI Article Synopsis

  • The study demonstrates that tetraphenylethylene-based fluorescent cellulose nanocrystals (TPE-CNCs) can effectively detect iron (Fe) in water with a quick response time of less than 10 seconds.
  • TPE-CNCs show high sensitivity and selectivity for Fe across a pH range of 4 to 10, with a detection limit of 264 nM, which is lower than WHO safety levels for iron in drinking water.
  • This research suggests that TPE-CNCs have significant potential for practical uses in areas like water quality monitoring, sewage treatment, and bioimaging.

Article Abstract

Previously, we found that aggregation-induced emission (AIE) luminogen tetraphenylethylene (TPE) based fluorescent cellulose nanocrystals (TPE-CNCs) showed excellent AIE-active fluorescence properties and high selectivity and sensitivity for detecting nitrophenol explosives in aqueous solutions. Here, we further develop the application of TPE-CNCs for fluorescence detection of Fe in aqueous solutions. The fluorescence of TPE-CNC aqueous suspensions is rapidly quenched (response time less than 10 s) due to the electron-transfer process between TPE and Fe upon addition of Fe. TPE-CNCs have high sensitivity and selectivity toward Fe over a broad pH range from 4 to 10. The limit of detection is determined to be 264 nM, which is below the World Health Organization (WHO) recommendations (5.36 μM) for Fe. Given the superior properties of TPE-CNCs, it has huge potential to be applied as a rapid and visual evaluation tool for drinking water quality. Collectively, we explore and develop fluorescent cellulose nanocrystals for multi-functional applications and TPE-CNCs can be used for practical applications in sensing, sewage treatment and bioimaging.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9426647PMC
http://dx.doi.org/10.1039/d2ra04272jDOI Listing

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