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Photosynthesis on the Ultrafast Time Scale within the Confinements of Quantum Nanostructured Photosystems
Author(s) -
Sordillo Laura A.,
Budansky Yury,
Alfano Robert R.
Publication year - 2021
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/php.13392
Subject(s) - femtosecond , photosystem , picosecond , ultrashort pulse , materials science , excited state , photosynthesis , quantum , streak camera , fluorescence , nanoscopic scale , chemical physics , optoelectronics , physics , laser , chemistry , optics , nanotechnology , atomic physics , photosystem ii , quantum mechanics , biochemistry
Fundamental information on the behavior of excited chlorophyll molecules packed within the confinements of nanosized photosystems I and II, following absorption of light, is presented. Using a 100 femtosecond laser with nanojoule (nJ) pulse energy and a one picosecond streak camera, we observed the light emitted from the nanostructured photosystems without oscillations or hops. The fluorescent exponential decay profiles and high efficiency within the nanostructure suggest that light coherently drains out as a unit. This implies that "quantumness" is linked to quantum confinement on the nano scale.