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
5924-5928
Kasera, Setu
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Biedermann, Frank
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Baumberg, Jeremy J.
51423b5f-bdb8-4851-8d50-472253ceb12c
Scherman, Oren A.
4889711e-5279-4211-b6ae-bbe70846e1ef
Mahajan, Sumeet
b131f40a-479e-4432-b662-19d60d4069e9
22 October 2012
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), .
(doi:10.1021/nl303345z).
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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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
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Date deposited: 17 Dec 2012 10:21
Last modified: 15 Mar 2024 03:28
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Contributors
Author:
Setu Kasera
Author:
Frank Biedermann
Author:
Jeremy J. Baumberg
Author:
Oren A. Scherman
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