ArticleACS physical chemistry Au2026
Implications of Intramolecular Interactions on the Fluorescence of a Highly Flexible Ethane-Bridged Porphyrin Dimer.
Article in ACS physical chemistry Au, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Understanding the role of conformational flexibility in multichromophoric systems is crucial for elucidating excited-state processes such as electronic coupling, energy transfer, and exciton-exciton annihilation, which are central to the rational design of artificial light-harvesting assemblies. In the present work, the excited-state dynamics of a highly flexible free-base porphyrin dimer has been investigated and compared with its monomer using femtosecond transient absorption spectroscopy and femtosecond optical gating. While the excited-state kinetics of the dimer closely resemble those of the monomer at low pump fluence, pump-fluence-dependent transient absorption and femtosecond optical gating measurements reveal additional ultrafast components of 1 ps and 18-28 ps. Potential energy surface scan reveals a strong dependence of electronic coupling on the dihedral angle between the two porphyrin units. Comparison of the estimated electronic coupling with the reorganization energy indicates that the dimer lies in the weak-coupling regime. Correlation of femtosecond optical gating measurements with transition dipole moments calculated at different dihedral angles suggests that conformers with more favorable transition-dipole orientations predominantly contribute to the blue side of the emission spectrum. These components are attributed to Förster-mediated singlet-singlet annihilation, arising from the significant spectral overlap between the
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.