Nanoparticle-Mediated Energy Transfer Phenomena

Nanoparticle-mediated energy transfer encompasses a suite of mechanisms by which light, electronic excitations or vibrational energy are exchanged between nanoscale particles and molecular or solid-state partners. Metallic nanoparticles, notably gold and silver, support surface plasmon resonances that concentrate electromagnetic fields at their surfaces, altering donor–acceptor interactions over distances up to tens of nanometres. Semiconductor quantum dots and dye-sensitised nanostructures similarly participate in Förster resonance energy transfer, plasmon-induced coupling and cascade processes. These phenomena underpin advances in biosensing, photovoltaics, photonic circuits and quantum devices. By tuning nanoparticle size, shape, composition and surface chemistry, researchers can control radiative and non-radiative decay rates, engineer fluorescence enhancement or suppression, and direct energy flow in complex assemblies. The global significance of this work lies in its potential to improve medical diagnostics, enable ultra-compact light sources and bolster sustainable energy harvesting through highly efficient nanoscale energy funnels.

Research from Nature Portfolio

Recent studies have demonstrated excitation-dependent modulation of fluorescence via strong exciton–plasmon coupling in hybrid nanostructures. By integrating multilevel organic fluorophores with gold nanoparticles, researchers have shown that the depth and spectral position of fluorescence quenching dips can be finely tuned by varying excitation wavelength, plasmon resonance and nanoparticle concentration. Theoretical modelling reproduces these effects and reveals resonant energy transfer pathways from higher-lying molecular states into plasmonic modes, offering a versatile strategy to engineer emission spectra in advanced sensing and imaging platforms.

Nanoparticle-Mediated Energy Transfer Phenomena publication trend

The graph below shows the total number of articles in nanoparticle-mediated energy transfer phenomena across all publications each year (not limited to Nature Index journals).

Technical terms

Förster resonance energy transfer (FRET): Non-radiative dipole–dipole energy transfer between a molecular donor and acceptor over 1–10 nm.

Nanometal surface energy transfer (NSET): Energy transfer from excited fluorophores to metal nanoparticles, dependent on distance and metal composition.

Plasmon-induced resonance energy transfer (PIRET): Energy transfer from plasmonic nanoparticle modes to adjacent acceptors via near-field coupling.

Surface plasmon resonance (SPR): Collective oscillation of conduction electrons in metal nanoparticles that amplifies local electromagnetic fields.

Quenching efficiency: Fractional reduction of donor emission due to non-radiative transfer to an acceptor or nanoparticle.

References

1. Energy Transfer-Based Recognition of Membrane Cholesterol by Controlling Intradistance of Linker. Sensors (2024).
2. Optimization and Multimachine Learning Algorithms to Predict Nanometal Surface Area Transfer Parameters for Gold and Silver Nanoparticles. Nanomaterials (2024).
3. Plasmon-Modulated Excitation-Dependent Fluorescence from Activated CTAB Molecules Strongly Coupled to Gold Nanoparticles. Scientific Reports (2017).
4. Principles and Applications of Resonance Energy Transfer Involving Noble Metallic Nanoparticles. Materials (2023).