A synthetic biological quantum optical system
Source abstract
Abstract
In strong plasmon-exciton coupling, a surface plasmon mode is coupled to an array of localized emitters to yield new hybrid light-matter states (plexcitons), whose properties may in principle be controlled via modification of the arrangement of emitters. We show that plasmon modes are strongly coupled to synthetic light-harvesting maquette proteins, and that the coupling can be controlled via alteration of the protein structure. For maquettes with a single chlorin binding site, the exciton energy (2.06 ± 0.07 eV) is close to the expected energy of the Qy transition. However, for maquettes containing two chlorin binding sites that are collinear in the field direction, an exciton energy of 2.20 ± 0.01 eV is obtained, intermediate between the energies of the Qx and Qy transitions of the chlorin. This observation is attributed to strong coupling of the LSPR to an H-dimer state not observed under weak coupling.
Source: openalex_inverted_index · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Spectroscopy and Quantum Chemical Studies · Photoreceptor and optogenetics research · Photosynthetic Processes and Mechanisms
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Chemistry
University of Sheffield
Sheffield S3 7HF
UK
The Johnson Research Foundation and Department of Biochemistry and Biophysics
University of Pennsylvania
Philadelphia
USA
N. Carolina State University
Raleigh
Materials and Engineering Research Institute
Sheffield Hallam University
Sheffield S1 1WB
Department of Molecular Biology and Biotechnology
Sheffield S10 2TN
COMP Centre of Excellence
Department of Applied Physics
Aalto University
School of Science
00076 Aalto
Funding
Engineering and Physical Sciences Research Council · Basic Energy Sciences · Academy of Finland · Biotechnology and Biological Sciences Research Council · H2020 European Research Council
References (66)
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