| Title: |
A photo-switchable molecular capsule: sequential photoinduced processes |
| Authors: |
Choudhari, Manjiri; Xu, Jingjing; Mckay, Alasdair I.; Guerrin, Clement; Forsyth, Craig; Ma, Howard Z.; Goerigk, Lars; O'Hair, Richard A. J.; Bonnefont, Antoine; Ruhlmann, Laurent; Aloise, Stephane; Ritchie, Chris |
| Contributors: |
Monash University Clayton; Shanghai Normal University (SHNU); 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); University of Melbourne; Laboratoire d'Electrochimie et de Chimie Physique du Corps Solide; Institut de Chimie de Strasbourg (IC); Université de Strasbourg (UNISTRA)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Source: |
ISSN: 2041-6520. |
| Publisher Information: |
CCSD; The Royal Society of Chemistry |
| Publication Year: |
2022 |
| Collection: |
LillOA (HAL Lille Open Archive, Université de Lille) |
| Subject Terms: |
[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry |
| Description: |
International audience ; The metastable trilacunary heteropolyoxomolybdate [PMo9O31(py)3]3− – {PMo9}; py = pyridine) and the ditopic pyridyl bearing diarylethene (DAE) (C25H16N2F6S2) self-assemble via a facile ligand replacement methodology to yield the photo-active molecular capsule [(PMo9O31)2(DAE)3]6−. The spatial arrangement and conformation of the three DAE ligands are directed by the surface chemistry of the molecular metal oxide precursor with exclusive ligation of the photo-active antiparallel rotamer to the polyoxometalate (POM) while the integrity of the assembly in solution has been verified by a suite of spectroscopic techniques. Electrocyclisation of the three DAEs occurs sequentially and has been investigated using a combination of steady-state and time-resolved spectroscopies with the discovery of a photochemical cascade whereby rapid photoinduced ring closure is followed by electron transfer from the ring-closed DAE to the POM in the latent donor–acceptor system on subsequent excitation. This interpretation is also supported by computational and detailed spectroelectrochemical analysis. Ring-closing quantum yields were also determined using a custom quantum yield determination setup (QYDS), providing insight into the impact of POM coordination on these processes. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
info:eu-repo/semantics/altIdentifier/pmid/36544719; PUBMED: 36544719 |
| DOI: |
10.1039/d2sc04613j |
| Availability: |
https://hal.univ-lille.fr/hal-04509344; https://hal.univ-lille.fr/hal-04509344v1/document; https://hal.univ-lille.fr/hal-04509344v1/file/d2sc04613j.pdf; https://doi.org/10.1039/d2sc04613j |
| Rights: |
http://creativecommons.org/licenses/by-nc/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.82F6A843 |
| Database: |
BASE |