MIPs logo MIPdatabase      Use this space
Custom Search
Reference type: Journal
Authors: Gui WY, Wang H, Liu Y, Ma Q
Article Title: Ratiometric fluorescent sensor with molecularly imprinted mesoporous microspheres for malachite green detection.
Publication date: 2018
Journal: Sensors and Actuators B: Chemical
Volume: 266
Page numbers: 685-691.
DOI: 10.1016/j.snb.2018.03.176
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0925400518306749

Abstract: A dual-emission molecularly imprinted mesoporous microspheres was designed for specific recognition and highly sensitive and selective determination of malachite green (MG). In this ratiometric fluorescent sensor, green fluorescent CdTe quantum dots (QDs)-doped into the core of silica mesoporous microspheres serves as a reference and provides a built-in correction for environmental effects. The other red fluorescent CdTe QDs are embedded around the pores of the silica microspheres as analytical tag. Then, molecular imprinting technique are integrated with the ratiometric sensor to provide high selectivity for MG. When the photoluminescence (PL) of red CdTe QDs is selectively quenched in the presence of MG, a visual color change from orange to green can be observed by naked eyes. The sensing method has a linear response in the range of 27.4 nM-137 μM with a detection limit of 17.0 nM. Moreover, there is an excellent recognition specificity for MG over other water pollutants. The applicability of this method is evaluated through the determination of MG in river water and lake water samples with satisfactory results
Template and target information: malachite green, MG
Author keywords: Ratiometric fluorescent sensor, molecular imprinting technique, Mesoporous microspheres, Malachite green

  Eat, sleep, imprint, repeat mug  SMI logo mug  Man of proper-tea mug in green

Molecules Special Issue call      Appeal for information


Join the Society for Molecular Imprinting
Logo of the Society for Molecular Imprinting

New items RSS feed
new items RSS feed  View latest updates

Sign-up for e-mail updates:
Choose between receiving an occasional newsletter or more frequent e-mail alerts.
Click here to go to the sign-up page.

Is your name elemental or peptidic? Enter your name and find out by clicking either of the buttons below!
Other products you may like:
view listings for MIP books on eBay:

Mickey Mouse 90th Anniversary banner