42
IRUS Total
Downloads

Tuneable fluorescence enhancement over nanostructured ZnO arrays with controlled morphology

File Description SizeFormat 
C8CP01493K.pdfAccepted version1.31 MBAdobe PDFView/Open
Title: Tuneable fluorescence enhancement over nanostructured ZnO arrays with controlled morphology
Authors: Wang, T
Centeno, A
Darvill, D
Pang, J
Ryan, MP
Xie, F
Item Type: Journal Article
Abstract: Zinc oxide (ZnO) nanorods (NRs) have been demonstrated as a promising platform for enhanced fluorescence-based sensing. It is, however, desirable to achieve a tuneable fluorescence enhancement with these platforms so that the fluorescence output can be adjusted based on the real need. Here we show that the fluorescence enhancement can be tuned by changing the diameter of the ZnO nanorods, simply controlled by potassium chloride (KCl) concentration during synthesis, using arrays of previously developed aligned NRs (a.k.a. aligned NR forests) and nanoflowers (NFs). Combining the experimental results obtained from ZnO nanostructures with controlled morphology and computer-aided verification, we show that the fluorescence enhancement factor increases when ZnO NRs become thicker. The fluorescence enhancement factor of NF arrays is shown to have a much stronger dependency on the rod diameter than that of aligned NR arrays. We prove that the morphology of nanostructures, which can be controlled, can be an important factor for fluorescence enhancement. Our (i) effort towards understanding the structure–property relationships of ZnO nanostructured arrays and (ii) demonstration on tuneable fluorescence enhancement by nanostructure engineering can provide some guidance towards the rational design of future fluorescence amplification platforms potentially for bio-sensing.
Issue Date: 7-Jun-2018
Date of Acceptance: 27-Apr-2018
URI: http://hdl.handle.net/10044/1/59323
DOI: https://doi.org/10.1039/C8CP01493K
ISSN: 1463-9076
Publisher: Royal Society of Chemistry
Start Page: 14828
End Page: 14834
Journal / Book Title: Physical Chemistry Chemical Physics
Volume: 21
Issue: 21
Copyright Statement: © 2018 Royal Society of Chemistry.
Sponsor/Funder: British Council
Royal Academy Of Engineering
Funder's Grant Number: 216239013
MMRE_P56611
Keywords: Science & Technology
Physical Sciences
Chemistry, Physical
Physics, Atomic, Molecular & Chemical
Chemistry
Physics
LARGE-SCALE SYNTHESIS
ZINC-OXIDE
PROTEIN MICROARRAYS
GROWTH-MECHANISM
NANOROD ARRAYS
WAVE-GUIDES
NANOWIRES
PLATFORM
RINGS
02 Physical Sciences
03 Chemical Sciences
Chemical Physics
Publication Status: Published
Online Publication Date: 2018-04-27
Appears in Collections:Materials
Faculty of Natural Sciences
Faculty of Engineering