Polyethyleneimine-templated copper nanoclusters via ascorbic acid reduction approach as ferric ion sensor

Feng, Jie; Ju, Yuyun; Liu, Juanjuan; Zhang, Huige; Chen, Xingguo

doi:10.1016/j.aca.2014.11.024

Cited by 99 publications

(42 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…189 Schematic representation of the Fe-chitosan complex formation Mehta et al 291 developed a selective and sensitive colorimetric method for determination of Fe 3+ ion by using p-amino salicylic acid dithiocarbamate functionalized gold nanoparticles (DTC-PAS-Au NPs) 226 (Fig. Feng et al 293 described a facile one-pot method for synthesis of water-soluble and stable fluorescent CuNCs at room temperature, in which branched polyethylene imine (BPEI) served as capping scaffold and ascorbic acid as reducing agent which can serve as a fluorescent sensor for ferric ion detection 228 (Fig. The nanoparticles solution showed red appearance and exhibited an absorption signal at 520 nm in the absence of ferric ion while ferric ion addition into the solution of 226 turn the red color solution into blue alongside the shifting of absorption signal from 520 nm to 700 nm which confirms the ligand-to-metal charge transfer between DTC-PAS-Au NPs and Fe 3+ ions.…”

Section: Materials Based Fe 3+ Sensormentioning

confidence: 99%

Optical sensor: a promising strategy for environmental and biomedical monitoring of ionic species

2015

View full text Add to dashboard Cite

There is fast growing research on designing and improving the metal recognition methodologies in the ecosystems and biological media. The fluorescent based techniques proved a mile stones for non-invasive metal sensation and quantification in the multichannel environment. Metals as the natural components of Earth's crust are generally present in trace concentrations in the environmental samples where the humic substances have complexation affinity toward them. Iron, zinc and copper are the 1 st , 2 nd and 3 rd adequate elements indispensable to the body in trace playing the crucial roles in many biological processes. However, the unregulated amounts either as excess or deficient may exacerbate deterioration to the vital organs and triggered the progression of complications. Beside these three essential elements, mercury is widely considered to be one of the most hazardous pollutants and highly dangerous elements due to its recognized accumulative and toxic characters in the environment and the ecosystem. In the current scenario, we have tried to summarize the maximum amount of recently developed fluorescent signaling materials for the Cu 2+ , Fe 2+ / Fe 3+ , Zn 2+ and Hg 2+ . The spectral shifting in the molecules on metal chelation, mode of complexation and stoichiometries of resulting adducts have been discussed in detail. Furthermore, the molecules which have been reported as intracellular metal detector via bioimaging are specifically highlighted that might be useful for the design and development of cell viable and membrane permeable molecular probes in the future perspective.

show abstract

Section: Materials Based Fe 3+ Sensormentioning

confidence: 99%

Optical sensor: a promising strategy for environmental and biomedical monitoring of ionic species

2015

View full text Add to dashboard Cite

show abstract

“…12 Particularly, polyethyleneimine (PEI) attracts substantial attentions because this positive charged polymer contains primary, secondary, and tertiary amine groups, which exhibits preferable hydrophilicity and strong chelating ability toward metal ions to form NCs. 15 Interestingly, greenemissive CuNCs@PEI peaking at 495 nm were further synthesized by Liu et al, where the processes are almost similar to that of Feng but the pH of solution is adjusted from alkaline to acidity. For example, Ling et al developed CuNCs@PEI with blue emission via a one-pot reduction procedure using hydrazine hydrate as reducing agent.…”

Section: Introductionmentioning

confidence: 99%

One‐Pot Hydrothermal Synthesis of Highly Fluorescent Polyethyleneimine‐capped Copper Nanoclusters for Specific Detection of Rifampicin

Tan

Yin

Yuan

et al. 2018

Bulletin Korean Chem Soc

View full text Add to dashboard Cite

Herein, a novel bright-green and highly fluorescent polyethyleneimine capped copper nanoclusters (CuNCs@PEI) has been hydrothermally synthesized, which is employed as a fluorescence probe to determine rifampicin. Under optimum synthetic conditions, the morphology, surface chemistry and optical features of resulting CuNCs@PEI are well characterized by transmission electron microscopy, Fourier transform infrared spectroscopy, UV-Vis absorption spectra, transient and steady-state fluorescence. In comparison to previous reports, the new species with a larger diameter of approximately 3 nm exhibit higher fluorescence quantum yield (QY) up to nearly 10.7%, and demonstrate tolerability to extreme pH, high ionic strengths as well as long-term UV irradiation. These excellent optical properties ascribe to unique grain size and surface chemical features of products, which are further discussed in this work. In addition, we employed as-prepared CuNCs@PEI to detect rifampicin based on fluorescence quenching phenomenon. The fluorescence intensity of probe is linearly proportional to rifampicin over the concentration rage from 0 to 20 μM, where the limit of detection (LOD) is 50 nM. Besides, this probe can be also used to assay rifampicin in serum samples with satisfactory recoveries.

show abstract

“…So copper nanoclusters are unstable and need to be stabilized by suitable molecules. Various molecules, such as protein [19], polymer [20], amino acid [21], and thiols [22], have been used as the template for the preparation of copper nanoclusters. Copper nanoclusters stabilized by these molecules showed excellent properties, while the synthesis of them is complicated and time-consuming.…”

Section: Introductionmentioning

confidence: 99%

Poly thymine stabilized copper nanoclusters as a fluorescence probe for melamine sensing

Zhu

Dai

et al. 2015

Talanta

View full text Add to dashboard Cite

Polyethyleneimine-templated copper nanoclusters via ascorbic acid reduction approach as ferric ion sensor

Cited by 99 publications

References 43 publications

Optical sensor: a promising strategy for environmental and biomedical monitoring of ionic species

Optical sensor: a promising strategy for environmental and biomedical monitoring of ionic species

One‐Pot Hydrothermal Synthesis of Highly Fluorescent Polyethyleneimine‐capped Copper Nanoclusters for Specific Detection of Rifampicin

Poly thymine stabilized copper nanoclusters as a fluorescence probe for melamine sensing

Contact Info

Product

Resources

About