In Situ SERS Monitoring of Photochemistry within a Nanojunction Reactor
Nano Letters2013Vol. 13(12), pp. 5985–5990
Citations Over TimeTop 10% of 2013 papers
Richard W. Taylor, Roger J. Coulston, Frank Biedermann, Sumeet Mahajan, Jeremy J. Baumberg, Oren A. Scherman
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.
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