fulltext.study @t Gmail

NaYF4:Yb3+–Er3+ nanocrystals/P(NIPAM-co-RhBHA) core–shell nanogels: Preparation, structure, multi stimuli-responsive behaviors and application as detector for Hg2+ ions

Paper ID Volume ID Publish Year Pages File Format Full-Text
25861 43894 2015 8 PDF Available
Title
NaYF4:Yb3+–Er3+ nanocrystals/P(NIPAM-co-RhBHA) core–shell nanogels: Preparation, structure, multi stimuli-responsive behaviors and application as detector for Hg2+ ions
Abstract

•Novel core–shell nanogels of NaYF4:Yb3+–Er3+ nanocrystals/P(NIPAM-co-RhBHA).•Probes based on NIR excitation and fluorescence resonance energy transfer.•Fluorescent sensors constructed with up-conversion nanocrystals and organic dyes.•Nanogels can response to multi-stimuli, such as pH, temperature, metal ions.

In the present study, we report a novel core–shell nanogels of NaYF4:Yb3+–Er3+ nanocrystals/P(NIPAM-co-RhBHA) based on up-conversion excitation and fluorescence resonance energy transfer (FRET). Firstly, up-conversion NaYF4:Yb3+–Er3+ nanocrystals were synthesized by hydrothermal method with EDTA, Er(NO3)3, Yb(NO3)3, Y(NO3)3 and NaF as raw materials. Then, the nanocrystals were decorated with MPS. Finally, core–shell nanogels with thermo-responsive shells were fabricated via free radical emulsion polymerization of N-isopropylacrylamide (NIPAM) and N-acrylyl-N′-rhodamine B acylhydrazine thiourea (RhBHA) dye monomers. Their structure, stimuli-responsive behaviors were investigated via TEM, FTIR, XRD, DSC, UV–vis and PL in detail. The results suggest that the nanogels can response to multi-stimuli, such as pH value, temperature, metal ions, and they can be used as sensitive detector for Hg2+ ions.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
NaYF4:Yb3+–Er3+ nanocrystals; RhBHA; Stimuli-responsive; Core–shell; Hg2+ ions; FRET
First Page Preview
NaYF4:Yb3+–Er3+ nanocrystals/P(NIPAM-co-RhBHA) core–shell nanogels: Preparation, structure, multi stimuli-responsive behaviors and application as detector for Hg2+ ions
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 302, 1 April 2015, Pages 51–58
Authors
, , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us