Signal enhancement of sensing nitroaromatics based on highly sensitive polymer dots

Nanoscale
Jin HuangKai Xi

Abstract

A new, rapid, sensitive, selective and portable fluorescence detection method for nitroaromatics based on polymer dots (Pdots) had been successfully developed not only in aqueous media but also in the solid state with test strips. The fluorescence quenching rates were proportional to the concentrations of 2,4,6-trinitrophenol (TNP) in the range of 0.2-20.0 μg mL(-1) and p-nitrophenol (PNP) in the range of 0.05-6.0 μg mL(-1), when Pdots were used as ratiometric fluorescent sensors in aqueous solution. The 3σ limit of detection of PNP reached 18.8 ng mL(-1). Compared with polymer-based detection for nitroaromatics in the organic phase, the signal enhancement effect was initially found when Pdots were used to detect nitroaromatics in the aqueous phase. The mechanism of the interaction between Pdots and nitroaromatics was revealed as an electron transfer phenomenon from the electron-rich chromophoric probe to the electron deficient nitroaromatics. The results indicated that Pdots-based detection was particularly suitable for on-site qualitative detection and quantitative analysis of nitroaromatics.

References

Feb 6, 2002·Water Research·Jia-Ming Chern, Yi-Wen Chien
Nov 16, 2002·Angewandte Chemie·Steffen Zahn, Timothy M Swager
Mar 27, 2003·Journal of the American Chemical Society·Honglae SohnWilliam C Trogler
Apr 15, 2005·Nature·Aimée RoseVladimir Bulović
May 26, 2005·Journal of Colloid and Interface Science·M Ahmaruzzaman, D K Sharma
Oct 20, 2005·Journal of the American Chemical Society·Han Young WooGuillermo C Bazan
Nov 2, 2005·Chemical Communications : Chem Comm·Sarah J ToalWilliam C Trogler
Mar 28, 2007·Chemical Reviews·Samuel W ThomasTimothy M Swager
May 16, 2007·Journal of the American Chemical Society·Tammene NaddoLing Zang
Jul 10, 2007·Analytica Chimica Acta·Sheetal PaliwalAleksandr Simonian
Sep 2, 2008·Accounts of Chemical Research·Timothy M Swager
Feb 18, 2009·The Journal of Physical Chemistry. C, Nanomaterials and Interfaces·Changfeng WuJason McNeill
Apr 21, 2010·Analytical Chemistry·R Cody StringerSheila A Grant
Jul 21, 2010·Nanoscale·Dönüs Tuncel, Hilmi Volkan Demir
Jan 20, 2011·Analytical Chemistry·Yang-Hsiang ChanDaniel T Chiu
Mar 8, 2011·Angewandte Chemie·Changfeng WuDaniel T Chiu
Mar 30, 2011·Chemical Society Reviews·Jiasheng WuPengfei Wang
May 10, 2011·Journal of the American Chemical Society·Fangmao YeDaniel T Chiu
Feb 23, 2012·Journal of the American Chemical Society·Kalathil K KarthaAyyappanpillai Ajayaghosh
Apr 12, 2012·Journal of the American Chemical Society·Carlos Cordovilla, Timothy M Swager
Jan 1, 2013·Journal of the American Chemical Society·Christoph S FischerStefan Mecking
Jan 12, 2013·Angewandte Chemie·Changfeng Wu, Daniel T Chiu
Jan 29, 2013·Angewandte Chemie·Sanjog S NagarkarSujit K Ghosh
May 21, 2013·ACS Applied Materials & Interfaces·Sébastien Rochat, Timothy M Swager
Feb 6, 2014·Advanced Materials·Emilie GeninMireille Blanchard-Desce

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.