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Photophysics and photochemistry of light harvesting complexes in the vicinity of optical antennas

Total Cost €


EC-Contrib. €






Project "NanoLight" data sheet

The following table provides information about the project.


Organization address
city: Castelldefels
postcode: 8860

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Spain [ES]
 Project website
 Total cost 170˙121 €
 EC max contribution 170˙121 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2014
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2015
 Duration (year-month-day) from 2015-09-01   to  2017-08-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    FUNDACIO INSTITUT DE CIENCIES FOTONIQUES ES (Castelldefels) coordinator 170˙121.00


 Project objective

The general objective of the project is to understand the photophysical processes in light harvesting complexes in the vicinity of optical antennas and particularly, the impact of quantum coherence on efficiency and directionality of ultrafast energy transport in photosynthesis. Purple bacteria is an organism that most effectively transforms solar energy into chemical one. Light harvesting complex 2 (LH2), plays key role in this process: collects solar energy and transfer it to the reaction centre. The photophysics of light harvesting complexes is still not fully understood. In recent years long-lived coherences were observed, which was unexpected for such complicated systems. Many crucial questions appeared: Are the coherences purely induced by excitation schemes? Do they have a biological function? Is the nature of the coherences electronic or vibrational? So far, the experimental approach concentrated on ensembles, but the complexity of the system cause that registered coherences are temporarily and spatially averaged, which makes it difficult to answer the questions. One can lift the ensemble by observation of one-by-one individual LH2 complex with single molecule (SM) spectroscopy methods. The observation of SM fluorescence requires chromophores with high quantum efficiency. Unfortunately, LH2 QE is very low. To enhance the fluorescence signal I propose to use optical antennas. These nanoscale structures, can focus electromagnetic energy to a spot of nanometric size. If the molecule is placed on such spot, the strong interaction between antenna and molecule allows the registration of enhanced SM fluorescence and even Raman spectra. With that tool, the study of LH2 complex at the SM level is possible. Hence we propose the investigation of single LH2 complex coupled to the optical antenna with ultrafast fluorescence and Raman spectroscopy, two complementary methods providing information about both, ground and excited state evolution.

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The information about "NANOLIGHT" are provided by the European Opendata Portal: CORDIS opendata.

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