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Updated: Mar 24, 2026

Isolation of Physiologically Active Thylakoids and Their Use in Energy-Dependent Protein Transport Assays
Published on: September 28, 2018
Superradiance at the localization-delocalization crossover in tubular chlorosomes
Rafael A Molina1, Enrique Benito-Matías1, Alejandro D Somoza2
1Instituto de Estructura de la Materia, IEM-CSIC, Serrano 123, Madrid 28006, Spain.
Abstract:
We study the effect of disorder on spectral properties of tubular chlorosomes in green sulfur bacteria Cf. aurantiacus. Employing a Frenkel-exciton Hamiltonian with diagonal and off-diagonal disorder consistent with spectral and structural studies, we analyze excitonic localization and spectral statistics of the chlorosomes. A size-dependent localization-delocalization crossover is found to occur as a function of the excitonic energy. The crossover energy region coincides with the more optically active states with maximized superradiance and is, consequently, more conducive for energy transfer.
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