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Spatial deformation of nanocellulose hydrogel enhances SERS

Spatial deformation of nanocellulose hydrogel enhances SERS Abstract Bacterial cellulose hydrogels containing gold nanoparticles (AuNPs-BC) were prepared using a cost-effective and environment-friendly in situ synthesis method. Well-dispersed AuNPs were grown on the nanofiber surface of the BC hydrogel, forming substrates of surface-enhanced Raman spectroscopy (SERS). Increases in SERS-active sites in the AuNPs-BC hydrogel caused the enhancement of SERS intensity. The enhancement in SERS intensity of 4-fluorobenzenethiol and phenylacetic acid (PAA), used as test analytes, was compared with spatially-un-deformed AuNPs-BC hydrogels, as well as spatially-deformed AuNPs-BC hydrogels in which the BC layers had contracted during drying. Particularly noteworthy was the detection of PAA by the simple contraction of the substrate, despite a low affinity to surface gold. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png BioChip Journal Springer Journals

Spatial deformation of nanocellulose hydrogel enhances SERS

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References (31)

Publisher
Springer Journals
Copyright
2013 The Korean BioChip Society and Springer-Verlag Berlin Heidelberg
ISSN
1976-0280
eISSN
2092-7843
DOI
10.1007/s13206-013-7306-5
Publisher site
See Article on Publisher Site

Abstract

Abstract Bacterial cellulose hydrogels containing gold nanoparticles (AuNPs-BC) were prepared using a cost-effective and environment-friendly in situ synthesis method. Well-dispersed AuNPs were grown on the nanofiber surface of the BC hydrogel, forming substrates of surface-enhanced Raman spectroscopy (SERS). Increases in SERS-active sites in the AuNPs-BC hydrogel caused the enhancement of SERS intensity. The enhancement in SERS intensity of 4-fluorobenzenethiol and phenylacetic acid (PAA), used as test analytes, was compared with spatially-un-deformed AuNPs-BC hydrogels, as well as spatially-deformed AuNPs-BC hydrogels in which the BC layers had contracted during drying. Particularly noteworthy was the detection of PAA by the simple contraction of the substrate, despite a low affinity to surface gold.

Journal

BioChip JournalSpringer Journals

Published: Sep 1, 2013

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