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L.A.G. thanks Agence Nationale de la Recherche (SADAM ANR-16-CE07-0015-02) for her grant. T.L.B. and E.D. are grateful to the SYSPROD project and AXELERA Po<^>le de Competitivite for financial support (PSMN Data Center). J.M.A.C. and P.S.M. acknowledge the European Union's Horizon 2020 research and innovation program under Marie Sklodowska Curie Grant agreement No. 722651 (SEPOMO). The Region Pays de la Loire is also acknowledged for the project "etoiles montantes SAMOA".

Analysis of institutional authors

Galiana, JoachimAuthor

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Exploring the Concept of Dimerization-Induced Intersystem Crossing: At the Origins of Spin-Orbit Coupling Selection Rules

Publicated to:JOURNAL OF PHYSICAL CHEMISTRY B. 125 (30): 8572-8580 - 2021-07-22 125(30), DOI: 10.1021/acs.jpcb.1c05082

Authors: Galan, Laura Abad; Castan, Jose M Andres; Dalinot, Clement; Marques, Pablo Simon; Galiana, Joachim; Blanchard, Philippe; Andraud, Chantal; Dumont, Elise; Maury, Olivier; Cabanetos, Clement; Monnereau, Cyrille; Le Bahers, Tangui

Affiliations

Inst Univ France, F-75005 Paris, France - Author
Univ Angers, SFR Matrix, Moltech Anjou, CNRS,UMR 6200, F-49045 Angers, France - Author
Univ Claude Bernard Lyon 1, Univ Lyon, ENS Lyon, CNRS,UMR 5182, F-69342 Lyon, France - Author

Abstract

Singlet-triplet interconversions (intersystem crossing, ISC) in organic molecules are at the basis of many important processes in cutting-edge photonic applications (organic light-emitting devices, photodynamic therapy, etc.). Selection rules for these transitions are mainly governed by the spin- orbit coupling (SOC) phenomenon. Although the SOC relies on complex relativistic phenomena, theoreticians have, with time, developed increasingly sophisticated and efficient approaches to gain access to a satisfactory evaluation of its magnitude. However, recent works have highlighted the remarkable and somehow unexpected efficiency of dimers of small conjugated molecules in terms of ISC quantum yields, whose origin has not been completely investigated. In this work, we bring a coupled experimental and theoretical analysis of the origin of the unusually large ISC efficiency on a series of such dimers that differ by their nature (covalent or supramolecular). We show that considering the dynamical nature of the SOC, and especially its dependence on angular orientations between the dimer subunits sometimes overlooked in the literature, it is necessary to rationalize some counterintuitive experimental observations. This combined experimental and theoretical work paves the way for new molecular engineering rules for SOC control.

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Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal JOURNAL OF PHYSICAL CHEMISTRY B due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2021, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category Materials Chemistry.

From a relative perspective, and based on the normalized impact indicator calculated from the Field Citation Ratio (FCR) of the Dimensions source, it yields a value of: 2.2, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: Dimensions Jun 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-06-10, the following number of citations:

  • WoS: 10
  • Scopus: 12
  • Europe PMC: 3
  • OpenCitations: 11

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-06-10:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 26.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 26 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 3.
  • The number of mentions on the social network X (formerly Twitter): 5 (Altmetric).

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: France.