Restricted access to a conical intersection to explain aggregation induced emission in dimethyl tetraphenylsilole
Abstract
Aggregation-induced emission of dimethyl tetraphenylsilole is due to restricted access to a conical intersection. The intersection allows for radiationless decay in solution but is not reachable in the aggregate phase.
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Molecular motions that lead to the CI geometry can be restricted upon aggregation, and this restriction of access to the conical intersection (RACI) restores fluorescence emission.
“Molecular motions that lead to the CI geometry can be restricted upon aggregation, and this restriction of access to the conical intersection (RACI) restores fluorescence emission (Figure 6).136”
From The Pursuit of Shortwave Infrared-Emitting Nanoparticles with Bright Fluorescence through Molecular Design and Excited-State Engineering of Molecular Aggregates (2022) · cites this paper as [136]
The current paradigm in photochemistry points out that nonradiative deactivation from the excited-state molecules involves a conical intersection (CI).
“The current paradigm in photochemistry (unreasonably overlooked in the materials science community) points out that nonradiative deactivation from the excited-state molecules involves a conical intersection (CI).134−139”
From The Pursuit of Shortwave Infrared-Emitting Nanoparticles with Bright Fluorescence through Molecular Design and Excited-State Engineering of Molecular Aggregates (2022) · cites this paper as [136]
The magnitude of vibronic interactions approaches infinity at the CI, where the S1 and S0 degenerate, from which the excitons decay nonradiatively.
“The magnitude of vibronic interactions approaches infinity at the CI, where the S1 and S0 degenerate, from which the excitons decay nonradiatively.”
From The Pursuit of Shortwave Infrared-Emitting Nanoparticles with Bright Fluorescence through Molecular Design and Excited-State Engineering of Molecular Aggregates (2022) · cites this paper as [136]
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- Authors
- Peng, X.-L., Ruiz-Barragan, S., Li, Z.-S., Li, Q.-S., & Blancafort, L.
- Affiliations
- Beijing Institute of Technology (CN)
- Japan Atomic Energy Agency
- Institut de Química Computacional i Catàlisi and Departament de Química
- Corresponding author
- Li, Quan-Song
- Venue
- Journal of Materials Chemistry C
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2016
- Volume
- 4
- Issue
- 14
- Pages
- 2802-2810
- ISSN
- 2050-7526 (ISSN-L)
- 2050-7534
- OpenAlex
- W2222414180
- Cited by
- 181
- References
- 70
- Citations by year
- 2026: 8 · 2025: 18 · 2024: 12 · 2023: 15 · 2022: 36 · 2021: 26 · 2020: 22 · 2019: 19 · 2018: 7 · 2017: 11 · 2016: 7
- FWCI
- 6.53
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Materials Chemistry C (publishedVersion)
- Funders
- Ministerio de Ciencia e Innovación (UNGI10-4E-801)
- National Natural Science Foundation of China (21303007)
- Topics
- Physical Sciences › Materials Science › Materials Chemistry › Luminescence and Fluorescent Materials
- Physical Sciences › Chemistry › Physical and Theoretical Chemistry › Photochemistry and Electron Transfer Studies
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Light-Emitting Diodes Research
- Keywords
- aggregation-induced emission, conical intersections, radiationless decay, aggregation, excited-state dynamics, siloles
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