PMID- 37165786
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20230524
LR  - 20230524
IS  - 1463-9084 (Electronic)
IS  - 1463-9076 (Linking)
VI  - 25
IP  - 20
DP  - 2023 May 24
TI  - Excitation dynamics in photosynthetic light-harvesting complex B850: exact 
      solution versus Redfield and Forster limits.
PG  - 14219-14231
LID - 10.1039/d3cp00671a [doi]
AB  - We model the excitation dynamics in bacterial B850 antenna using the standard 
      Redfield, modified Redfield, and Forster approaches and comparing them with the 
      exact solution obtained with hierarchical equation of motion (HEOM). We have 
      found that the modified Redfield is capable of reproducing the dynamics 
      associated with downhill relaxation from higher exciton levels, but fails to 
      explain the migration of quasi-equilibrated excitation over the B850 ring (and 
      its spectral signatures like transient anisotropy decay). Neglecting the 
      population-to-coherence transfers leads to a quick decoherence between the 
      exciton states resulting in unrealistically fast delocalization looking like 
      instantaneous transfer around the ring. The standard (non-secular) Redfield gives 
      a more satisfactory picture of this kind of migration, but in some cases the 
      results can be corrupted by artifacts emerging from the one-phonon character of 
      this theory.
FAU - Novoderezhkin, Vladimir I
AU  - Novoderezhkin VI
AUID- ORCID: 0000-0003-4583-5725
AD  - A. N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State 
      University, Leninskie Gory, 119992, Moscow, Russia. v.novoderezhkin@gmail.com.
LA  - eng
PT  - Journal Article
DEP - 20230524
PL  - England
TA  - Phys Chem Chem Phys
JT  - Physical chemistry chemical physics : PCCP
JID - 100888160
SB  - IM
EDAT- 2023/05/11 06:42
MHDA- 2023/05/11 06:43
CRDT- 2023/05/11 04:08
PHST- 2023/05/11 06:43 [medline]
PHST- 2023/05/11 06:42 [pubmed]
PHST- 2023/05/11 04:08 [entrez]
AID - 10.1039/d3cp00671a [doi]
PST - epublish
SO  - Phys Chem Chem Phys. 2023 May 24;25(20):14219-14231. doi: 10.1039/d3cp00671a.