Details
| Original language | English |
|---|---|
| Pages (from-to) | 19119-19124 |
| Number of pages | 6 |
| Journal | Journal of Physical Chemistry C |
| Volume | 123 |
| Issue number | 31 |
| Early online date | 12 Jul 2019 |
| Publication status | Published - 8 Aug 2019 |
| Externally published | Yes |
Abstract
Surface-enhanced Raman scattering (SERS) is of growing importance in different fields, from clinical analysis/chemistry to food industry. For a better insight into the complex light-matter interaction processes that are underlying the intensity enhancement, it is essential to experimentally distinguish and quantify the contributions based on the chemical mechanism (CM) with respect to the electromagnetic mechanism. Here, we present a model to estimate the relative CM response of Raman modes by analyzing light-induced degradation of target molecules on designed metal/semiconductor SERS substrates. The resulting intensity evolution is described by a biexponential function with two model parameters that allow a differentiation of the enhancement processes. Our work thereby provides a means for a better understanding of CM and will be advantageous for an application of intensity-based quantitative SERS techniques.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Energy(all)
- General Energy
- Chemistry(all)
- Physical and Theoretical Chemistry
- Materials Science(all)
- Surfaces, Coatings and Films
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In: Journal of Physical Chemistry C, Vol. 123, No. 31, 08.08.2019, p. 19119-19124.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Quantifying the Contribution of Chemical Enhancement to SERS: A Model Based on the Analysis of Light-Induced Degradation Processes
AU - Liu, Bo
AU - Thielert, Bonito
AU - Reutter, Andreas
AU - Stosch, Rainer
AU - Lemmens, Peter
N1 - Funding Information: We gratefully acknowledge the support of the Braunschweig International Graduate School of Metrology B-IGSM, DFG Research Training Group GrK1952 “Metrology for Complex Nanosystems” and DFG − EXS 2123 QuantumFrontiers, Light and Matter at the Quantum Frontier. We thank Stefan Wundrack for important discussion contributions.
PY - 2019/8/8
Y1 - 2019/8/8
N2 - Surface-enhanced Raman scattering (SERS) is of growing importance in different fields, from clinical analysis/chemistry to food industry. For a better insight into the complex light-matter interaction processes that are underlying the intensity enhancement, it is essential to experimentally distinguish and quantify the contributions based on the chemical mechanism (CM) with respect to the electromagnetic mechanism. Here, we present a model to estimate the relative CM response of Raman modes by analyzing light-induced degradation of target molecules on designed metal/semiconductor SERS substrates. The resulting intensity evolution is described by a biexponential function with two model parameters that allow a differentiation of the enhancement processes. Our work thereby provides a means for a better understanding of CM and will be advantageous for an application of intensity-based quantitative SERS techniques.
AB - Surface-enhanced Raman scattering (SERS) is of growing importance in different fields, from clinical analysis/chemistry to food industry. For a better insight into the complex light-matter interaction processes that are underlying the intensity enhancement, it is essential to experimentally distinguish and quantify the contributions based on the chemical mechanism (CM) with respect to the electromagnetic mechanism. Here, we present a model to estimate the relative CM response of Raman modes by analyzing light-induced degradation of target molecules on designed metal/semiconductor SERS substrates. The resulting intensity evolution is described by a biexponential function with two model parameters that allow a differentiation of the enhancement processes. Our work thereby provides a means for a better understanding of CM and will be advantageous for an application of intensity-based quantitative SERS techniques.
UR - http://www.scopus.com/inward/record.url?scp=85071489549&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.9b04526
DO - 10.1021/acs.jpcc.9b04526
M3 - Article
AN - SCOPUS:85071489549
VL - 123
SP - 19119
EP - 19124
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 31
ER -