Hairy Fluorescent Nanospheres Based on Polyelectrolyte Brush for Highly Sensitive Determination of Cu(II)

Polymers
Qiaoling WangEnyu Fu

Abstract

Currently, it is an ongoing challenge to develop fluorescent nanosphere detectors that are uniform, non-toxic, stable and bearing a large number of functional groups on the surface for further applications in a variety of fields. Here, we have synthesized hairy nanospheres (HNs) with different particle sizes and a content range of carboxyl groups from 4 mmol/g to 9 mmol/g. Based on this, hairy fluorescent nanospheres (HFNs) were prepared by the traditional coupling method (TCM) or adsorption-induced coupling method (ACM). By comparison, it was found that high brightness HFNs are fabricated based on HNs with poly (acrylic acid) brushes on the surface via ACM. The fluorescence intensity of hairy fluorescent nanospheres could be controlled by tuning the content of 5-aminofluorescein (5-AF) or the carboxyl groups of HNs easily. The carboxyl content of the HFNs could be as high as 8 mmol/g for further applications. The obtained HFNs are used for the detection of heavy metal ions in environmental pollution. Among various other metal ions, the response to Cu (II) is more obvious. We demonstrated that HFNs can serve as a selective probe and for the separation and determination of Cu(II) ions with a linear range of 0-0.5 μM and a low de...Continue Reading

References

Jun 4, 2008·Physical Review Letters·Katja HenzlerMatthias Ballauff
Sep 4, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·S SamS Djebbar
Dec 7, 2006·Physical Chemistry Chemical Physics : PCCP·A Wittemann, M Ballauff
Mar 11, 2010·Methods in Molecular Biology·Marcel J E Fischer
Apr 10, 2010·Journal of the American Chemical Society·Masayasu TakiYukio Yamamoto
Aug 23, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Cuie WangShou-Jun Xiao
Feb 5, 2013·Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology·Xinhui SuZhen Cheng
Mar 13, 2014·ACS Applied Materials & Interfaces·Honghong YinChuanlai Xu
May 26, 2017·Analytica Chimica Acta·Celia Ruiz-PalomeroMiguel Valcárcel
Nov 28, 2018·Analytical Chemistry·Xiaoni FangWenwan Zhong
May 19, 2019·Mikrochimica Acta·Jing ZhangYong Zhang
Jun 14, 2017·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Yeying WangJie Lu

❮ Previous
Next ❯

Citations


❮ Previous
Next ❯

Methods Mentioned

BETA
dynamic light scattering
scanning electronic microscopy
biosensing

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.