Single and multi-exciton dynamics in aqueous protochlorophyllide aggregates

O. Sytina, I.H.M. van Stokkum, R. van Grondelle, M.L. Groot

Research output: Contribution to JournalArticleAcademicpeer-review


In plants, the oxidoreductase enzyme POR reduces protochlorophyllide (Pchlide) into chlorophyllide (Chlide), using NADPH as a cofactor. The reduction involves the transfer of two electrons and two protons to the C17î - C18 double bond of Pchlide, and the reaction is initiated by the absorption of light by Pchlide itself. In this work we have studied the excited state dynamics of Pchlide dissolved in water, where it forms excitonically coupled aggregates, by ultrafast time-resolved transient absorption and fluorescence experiments performed in the 480 - 720 nm visible region and in the 1780 - 1590 cm
Original languageEnglish
Pages (from-to)3936-3946
Number of pages11
JournalJournal of Physical Chemistry A
Issue number16
Publication statusPublished - 2011


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