| Title: |
Unraveling Ultrafast Dynamics of the Photoswitchable Bridged Dithienylethenes Under Structural Constraints |
| Authors: |
Hamdi, Ismaïl; Buntinx, Guy; Poizat, Olivier; Delbaere, Stéphanie; Perrier, Aurelie; Yamashita, Rikiya; Muraoka, Ken-Ichi; Takeshita, Michinori; Aloise, Stephane |
| Contributors: |
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 (LASIRE); Institut de Chimie - CNRS Chimie (INC-CNRS)-Université de Lille-Centre National de la Recherche Scientifique (CNRS); Lille Neurosciences & Cognition - U 1172 (LilNCog); Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lille-Centre Hospitalier Régional Universitaire CHU Lille (CHRU Lille); Interfaces, Traitements, Organisation et Dynamique des Systèmes (ITODYS (UMR_7086)); Université Paris Diderot - Paris 7 (UPD7)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS); Saga University Japon |
| Source: |
ISSN: 1463-9076. |
| Publisher Information: |
CCSD; Royal Society of Chemistry |
| Publication Year: |
2019 |
| Subject Terms: |
[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry |
| Description: |
International audience ; Excited state dynamics of constrained photochromic benzodithienylethenes were adressed by considering the bridging with polyether chains (from x=4 to 6 units) at the ortho and meta positions of the aryl group, noticed DTE-ox and DTE-mx, through time-resolved absorption spectroscopy supported with (TD)-DFT calculations. The photochromic parameters and geometrical structures of these series are discussed. A Novel photocyclization pathway via triplet state evidenced recently (Hamdi et al., Phys. Chem. Chem. Phys. 2016, 18, 28091-28100.) is largely dependent on the length and the position of the polyether chain. For the first time, by comparing the two series, we revealed, for the DTE-ox series, an interconversion not only in the ground state but also between the triplet states of the anti-parallel and parallel open form conformers. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1039/c8cp07100d |
| Availability: |
https://hal.science/hal-03036829; https://hal.science/hal-03036829v1/document; https://hal.science/hal-03036829v1/file/PCCP%20Bridged%20DTE%20HAL.pdf; https://doi.org/10.1039/c8cp07100d |
| Rights: |
https://about.hal.science/hal-authorisation-v1/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.B7CAD913 |
| Database: |
BASE |