Optimized recipe for sol-gel-based SERS substrates

Title data

Lucht, S. ; Murphy, T. ; Schmidt, Heinar ; Kronfeldt, Heinz-Detlef:
Optimized recipe for sol-gel-based SERS substrates.
In: Journal of Raman Spectroscopy. Vol. 31 (November 2000) Issue 11 . - pp. 1017-1022.
ISSN 0377-0486
DOI: https://doi.org/10.1002/1097-4555(200011)31:11<1017::AID-JRS638>3.0.CO;2-V

Abstract in another language

The aim of this study was to develop further surface-enhanced Raman scattering (SERS) substrates appropriate for the in situ. environmental determination of chemicals in sea-water important for global environmental problems. By encapsulating silver colloids in a sol-gel-derived xerogel, SEWS-active coatings were produced with the high mechanical and chemical stability required for underwater field measurements, A flow-through system was used which simulates measurements under real how conditions. Substrates were optimized regarding sensitivity to different analytes and long-term stability by varying solvent type, pH and sol-gel precursors. The substrates were characterized by their SEWS activity and calibration functions of the Langmuir isotherm type were found for a variety of aromatic hydrocarbons. Limits of detection as low as 9 ppb for phenylacetylene and 135 ppb for biphenyl were achieved. Detailed tests on long-term stability in sea-water yielded a substrate half-life of 13 days, which resulted in a substrate lifetime of at least 5 weeks.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Additional notes:	ISI:000165459100010
Institutions of the University:	Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Lehrstuhl Bioanalytik und Lebensmittelanalytik > Lehrstuhl Bioanalytik und Lebensmittelanalytik - Univ.-Prof. Dr. Andreas Römpp Graduate Schools > Bayreuth Graduate School of Mathematical and Natural Sciences (BayNAT) > Molecular Biosciences
Result of work at the UBT:	No
DDC Subjects:	500 Science > 500 Natural sciences 500 Science > 540 Chemistry 500 Science > 570 Life sciences, biology
Date Deposited:	30 Jul 2019 09:10
Last Modified:	30 Jul 2019 09:10
URI:	https://eref.uni-bayreuth.de/id/eprint/51625