Related Experiment Video
Updated: Dec 21, 2025

Nanomanipulation of Single RNA Molecules by Optical Tweezers
Published on: August 20, 2014
Control of Vibronic Transition Rates by Resonant Single-Molecule-Nanoantenna Coupling
Lisa Saemisch1, Matz Liebel1, Niek F van Hulst1,2
1ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain.
Abstract:
Plasmonic nanostructures dramatically alter the radiative and nonradiative properties of single molecules in their vicinity. This coupling-induced change in decay channels selectively enhances specific vibronic transitions, which can enable plasmonic control of molecular reactivity. Here, we report coupling-dependent spectral emission shaping of single Rhodamine 800 molecules in the vicinity of plasmonic gold nanorods. We show that the relative vibronic transition rates of the first two vibronic transitions of the spontaneous emission spectrum can be tuned in the weak coupling regime, by approximately 25-fold, on the single molecule level.
Related Concept Videos
NMR Spectroscopy: Spin–Spin Coupling
Double Resonance Techniques: Overview
Spin decoupling is usually achieved by...
UV–Vis Spectroscopy: Molecular Electronic Transitions
Spin–Spin Coupling Constant: Overview
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
Atomic Nuclei: Magnetic Resonance
Atomic Nuclei: Larmor Precession Frequency

