ArticleJournal of the American Chemical Society2025
Signatures of a Conical Intersection in Two-Dimensional Spectra of a Red-Absorbing Squaraine Dye.
Article in Journal of the American Chemical Society, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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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.
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Who cites it
3 citing papers in PubMed.
- High energy triplet-state manipulation via temperature-responsive twisted hetero-annulation systems.Nature communications · 2026Article
- Quantum-Indeterminate Proton Positions in Ultrafast Excited-State Intramolecular Proton Transfer.The journal of physical chemistry letters · 2026Article
- Spectroscopic Exploration of Squaraine Dyes: Molecular Characterization of Fundamental, Combination, and Overtone Bands.ACS physical chemistry Au · 2026Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Squaraine dyes are promising for dye-sensitized solar cells (DSSCs) due to their strong absorption in the red and near-infrared regions. However, their ultrafast photophysical behavior remains poorly understood. Using two-dimensional electronic spectroscopy (2DES) and ab initio computations, we reveal signatures of a conical intersection (CI) governing excited-state dynamics in a prototypical squaraine dye. This sub-200 fs decay pathway may hinder squaraine performance as dye-sensitizers. Our results provide experimental evidence of a sloped CI landscape and elucidate the role of at least two vibrational modes strongly coupled to electronic degrees of freedom. The passage through a CI emerges as a key relaxation mechanism, shedding light on the complex photophysics of these dyes.
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Registered trials
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