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In situ SERS monitoring of photochemistry within a nanojunction reactor.

ABSTRACT: We demonstrate a powerful SERS-nanoreactor concept composed of self-assembled gold nanoparticles (AuNP) linked by the sub-nm macrocycle cucurbit[n]uril (CB[n]). The CB[n] functions simultaneously as a nanoscale reaction vessel, sequestering and templating a photoreaction within, and also as a powerful SERS-transducer through the large field enhancements generated within the nanojunctions that CB[n]s define. Through the enhanced Raman fingerprint, the real-time SERS-monitoring of a prototypical stilbene photoreaction is demonstrated. By choosing the appropriate CB[n] nanoreactor, selective photoisomerism or photodimerization is monitored in situ from within the AuNP-CB[n] nanogap.

SUBMITTER: Taylor RW

PROVIDER: S-EPMC3883114 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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In situ SERS monitoring of photochemistry within a nanojunction reactor.

Taylor Richard W RW Coulston Roger J RJ Biedermann Frank F Mahajan Sumeet S Baumberg Jeremy J JJ Scherman Oren A OA

Nano letters 20131113 12

We demonstrate a powerful SERS-nanoreactor concept composed of self-assembled gold nanoparticles (AuNP) linked by the sub-nm macrocycle cucurbit[n]uril (CB[n]). The CB[n] functions simultaneously as a nanoscale reaction vessel, sequestering and templating a photoreaction within, and also as a powerful SERS-transducer through the large field enhancements generated within the nanojunctions that CB[n]s define. Through the enhanced Raman fingerprint, the real-time SERS-monitoring of a prototypical s ...[more]

PMID: 24188432

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