In situ SERS monitoring of photochemistry within a nanojunction reactor.
basic_science · Level V
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- Record sourced from PubMed, PMID 24188432.
- Also identified by DOI 10.1021/nl403164c and PMC identifier 3883114.
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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.
Medical subject headings
- Gold
- Metal Nanoparticles
- Photochemistry