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Quantitative SERS Using the Sequestration of Small Molecules Inside Precise Plasmonic Nanoconstructs.
MedLine Citation:
PMID:  23088754     Owner:  NLM     Status:  Publisher    
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.
Setu Kasera; Frank Biedermann; Jeremy J Baumberg; Oren A Scherman; Sumeet Mahajan
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-22
Journal Detail:
Title:  Nano letters     Volume:  -     ISSN:  1530-6992     ISO Abbreviation:  Nano Lett.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101088070     Medline TA:  Nano Lett     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Melville Laboratory for Polymer Synthesis, Department of Chemistry, ‡Nanophotonics Centre, Cavendish Laboratory, §Physics of Medicine, Cavendish Laboratory, University of Cambridge , United Kingdom.
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