NDLI: Development of polymer-modified magnetic nanoparticles and quantum dots for Escherichia coli binding test

Content Provider	Springer Nature Link
Author	Iqbal, Zafar Lai, Edward P. C. Avis, Tyler J.
Copyright Year	2011
Abstract	A rapid binding test has been developed for the detection of bacteria using polymer-modified magnetic nanoparticles. Polydopamine (PDA) can effectively act as a sorbent even in water solution, and a PDA coating on magnetic nanoparticles (MNPs) was therefore prepared to bind Escherichia coli (E. coli). Albeit non-selective, PDA-modified magnetic nanoparticles (MNPs@PDA) show nearly 100% efficiency in binding E. coli. If E. coli, grown in tryptic soy broth medium, is analyzed by capillary electrophoresis (CE) using phosphate buffer as the background electrolyte, two peaks are found, while a single peak is found with carbonate buffer containing 0.05% of poly(ethylene glycol). Self-polymerization of dopamine on E. coli at pH 9.5 is also feasible. The detection of E. coli is demonstrated by adding quantum dots (QDs) to form a QDs-PDA-E. coli aggregate for better CE analysis. Figure Development of Polymer-Modified Magnetic Nanoparticles and Quantum Dots for Escherichia coli Binding Test
Starting Page	193
Ending Page	200
Page Count	8
File Format	PDF
ISSN	00263672
Journal	Microchimica Acta
Volume Number	176
Issue Number	1-2
e-ISSN	14365073
Language	English
Publisher	Springer Vienna
Publisher Date	2011-10-16
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Escherichia coli Polydopamine-coated magnetic nanoparticles Quantum dots Rapid binding test Capillary electrophoresis Microengineering Characterization and Evaluation of Materials Nanotechnology Analytical Chemistry Nanochemistry
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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