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Quantitative SERS using the sequestration of small molecules inside precise plasmonic nanoconstructs

Quantitative SERS using the sequestration of small molecules inside precise plasmonic nanoconstructs
Quantitative SERS using the sequestration of small molecules inside precise plasmonic nanoconstructs
We show how the macrocyclic host, cucurbit[8]uril (CB[8]), creates precise subnanometer junctions between gold nanoparticles while its cavity simultaneously traps small molecules; this enables their reproducible surface-enhanced Raman spectroscopy (SERS) detection. Explicit shifts in the SERS frequencies of CB[8] on complexation with guest molecules provides a direct strategy for absolute quantification of a range of molecules down to 10–11 M levels. This provides a new analytical paradigm for quantitative SERS of small molecules.

quantitative sers, cucurbit[8]uril, host?guest, self-assembled nanoparticles
1530-6984
5924-5928
Kasera, Setu
7f8ee453-2591-4d29-86eb-e0160b941e79
Biedermann, Frank
0197e5da-cc0d-439a-9ada-757512a20372
Baumberg, Jeremy J.
51423b5f-bdb8-4851-8d50-472253ceb12c
Scherman, Oren A.
4889711e-5279-4211-b6ae-bbe70846e1ef
Mahajan, Sumeet
b131f40a-479e-4432-b662-19d60d4069e9
Kasera, Setu
7f8ee453-2591-4d29-86eb-e0160b941e79
Biedermann, Frank
0197e5da-cc0d-439a-9ada-757512a20372
Baumberg, Jeremy J.
51423b5f-bdb8-4851-8d50-472253ceb12c
Scherman, Oren A.
4889711e-5279-4211-b6ae-bbe70846e1ef
Mahajan, Sumeet
b131f40a-479e-4432-b662-19d60d4069e9

Kasera, Setu, Biedermann, Frank, Baumberg, Jeremy J., Scherman, Oren A. and Mahajan, Sumeet (2012) Quantitative SERS using the sequestration of small molecules inside precise plasmonic nanoconstructs. Nano Letters, 12 (11), 5924-5928. (doi:10.1021/nl303345z).

Record type: Article

Abstract

We show how the macrocyclic host, cucurbit[8]uril (CB[8]), creates precise subnanometer junctions between gold nanoparticles while its cavity simultaneously traps small molecules; this enables their reproducible surface-enhanced Raman spectroscopy (SERS) detection. Explicit shifts in the SERS frequencies of CB[8] on complexation with guest molecules provides a direct strategy for absolute quantification of a range of molecules down to 10–11 M levels. This provides a new analytical paradigm for quantitative SERS of small molecules.

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More information

Published date: 22 October 2012
Keywords: quantitative sers, cucurbit[8]uril, host?guest, self-assembled nanoparticles
Organisations: Chemistry

Identifiers

Local EPrints ID: 346293
URI: http://eprints.soton.ac.uk/id/eprint/346293
ISSN: 1530-6984
PURE UUID: a3c8d46d-300d-4d8d-837e-a955f192a2b8
ORCID for Sumeet Mahajan: ORCID iD orcid.org/0000-0001-8923-6666

Catalogue record

Date deposited: 17 Dec 2012 10:21
Last modified: 18 Feb 2021 17:09

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