Bi-analyte SERS with isotopically edited dyes
Isotopically substituted rhodamine dyes provide ideal probes for the study of single-molecule surface enhanced Raman scattering (SM-SERS) events through multiple-analyte techniques. Isotopic editing should, in principle, provide probes that have identical chemical properties (and surface chemistries...
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| Veröffentlicht in: | Physical chemistry chemical physics : PCCP 2008-01, Vol.10 (28), p.4147-4153 |
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| container_end_page | 4153 |
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| container_issue | 28 |
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| container_title | Physical chemistry chemical physics : PCCP |
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| creator | BLACKIE, E LE RU, E. C MEYER, M TIMMER, M BURKETT, B NORTHCOTE, P ETCHEGOIN, P. G |
| description | Isotopically substituted rhodamine dyes provide ideal probes for the study of single-molecule surface enhanced Raman scattering (SM-SERS) events through multiple-analyte techniques. Isotopic editing should, in principle, provide probes that have identical chemical properties (and surface chemistries); while exhibiting at the same time distinct Raman features which enable us to identify single-molecule SERS events. We present here a specific example of two-analyte SM-SERS based on the isotopic substitution of a methyl ester rhodamine dye. The dyes are carefully characterized (in both standard and SERS conditions) to confirm experimentally their similar chemical properties. We then demonstrate their utility for bi-analyte SERS (BiASERS) experiments and, as an example, highlight the transition from a single, to a few, to many molecules in the statistics of SM-SERS signals. |
| doi_str_mv | 10.1039/b803738h |
| format | Article |
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| subjects | Chemistry Exact sciences and technology General and physical chemistry |
| title | Bi-analyte SERS with isotopically edited dyes |
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