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Super-resolution mapping of hot carriers on plasmonic nanoparticles for enhanced photochemistry.

Objective

Plasmonic nanoparticles (PNPs) present unique optoelectronic properties that depend on their size and shape and are not present in larger particles or the bulk material. Such properties arise from their localized surface plasmon resonances (LSPRs). LSPRs are the light-induced coherent motion of electrons that produce dramatic enhancements of the electromagnetic field close to the surface of the particle (hot spots) as well as large scattering and absorption cross-sections. These properties have motivated the use of PNPs in many applications including ultra-sensitive sensing, light harvesting, imaging, photonics, and medical and pharmaceutical therapies. Very recently, a previously unexplored feature of LSPRs opened a new perspective. Non-radiative decay of LSPRs can result in the excitation of electron-hole pairs with high, far-from-equilibrium energies known as hot carriers. These carriers can be injected into a nearby molecule causing its chemical transformation. Manipulating LSPRs allows for the fine control of the reactive properties of hot carriers, in a similar way in which it has enabled control of electromagnetic fields. This offers new possibilities in photochemistry, including enhanced efficiencies, spatial distribution of reactivity and bond selectivity. However, determining the role of hot carriers in plasmon-mediated chemistry is a difficult task as it could be masked by other catalytic properties (heat generation and field enhancement). The main objectives of this proposal are:
1) The implementation of an optical method for reactive-spot mapping, which will allow to create a map that highlight areas of low and high photochemical reactivity on single PNPs with high spatial resolution.
2) The control of plasmon-mediated growth of PNPs with nanoscale spatial selectivity. Determination of the role of hot carriers in these reactions.
3) Study, design and optimization of hybrid bimetallic plasmonic-catalytic NPs with applications in energy conversion.

Fields of science (EuroSciVoc)

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Programme(s)

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Topic(s)

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Funding Scheme

Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.

MSCA-IF-EF-ST - Standard EF

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Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

(opens in new window) H2020-MSCA-IF-2017

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Coordinator

LUDWIG-MAXIMILIANS-UNIVERSITAET MUENCHEN
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 79 730,40
Address
GESCHWISTER SCHOLL PLATZ 1
80539 MUNCHEN
Germany

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Region
Bayern Oberbayern München, Kreisfreie Stadt
Activity type
Higher or Secondary Education Establishments
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 79 730,40

Participants (1)

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