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Use of sol-gel techniques in the development of surface-enhanced Raman scattering (SERS) substrates suitable for in situ detection of chemicals in sea-water

Title data

Murphy, T. ; Schmidt, Heinar ; Kronfeldt, Heinz-Detlef:
Use of sol-gel techniques in the development of surface-enhanced Raman scattering (SERS) substrates suitable for in situ detection of chemicals in sea-water.
In: Applied Physics B. Vol. 69 (August 1999) Issue 2 . - pp. 147-150.
ISSN 1432-0649
DOI: https://doi.org/10.1007/s003400050787

Abstract in another language

The development of surface-enhanced Raman scattering substrates suitable for in situ environmental analysis in sea-water is presented. Substrates consist of metal colloids encapsulated in a sol-gel-derived xerogel layer. Control of the gel parameters, such as porosity, pore size, and polarity, enables tailoring of sensitivity to different analyte groups. Gold and silver colloids were used along with tetraethoxysilane (TEOS) and methyltriethoxysilane (MTEOS) precursors. Substrates are characterised by measurement of optical spectra and use of scanning electron microscopy (SEM). Activity is discussed in terms of the choice of precursor and choice of metal colloid. Spectra were obtained for a range of substituted benzene derivatives with limits of detection (LODs) of 100 ppb and 10 ppb for chlorobenzene and phenylacetylene, respectively. Substrate selectivity is shown by the contrasting response of a single substrate type to similar molecules, in particular phenylacetylene and benzonitrile. Details of mechanical and chemical stability tests on the substrates are also included.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: ISI:000081874000013
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 08:55
Last Modified: 30 Jul 2019 09:12
URI: https://eref.uni-bayreuth.de/id/eprint/51622