| 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: |
Université de Lille; CNRS; Monash University Clayton; Shanghai Normal University SHNU; Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516; University of Melbourne; Laboratoire d'Electrochimie et de Chimie Physique du Corps Solide |
| Publication Year: |
2024 |
| Collection: |
LillOA (Lille Open Archive - Université de Lille) |
| Description: |
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. ; 46;13 |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/octet-stream; application/rdf+xml; charset=utf-8; application/pdf |
| Language: |
English |
| Relation: |
Chemical Science; Chem. Sci.; http://hdl.handle.net/20.500.12210/109479 |
| Availability: |
https://hdl.handle.net/20.500.12210/109479 |
| Rights: |
Attribution-NonCommercial 3.0 United States ; info:eu-repo/semantics/openAccess |
| Accession Number: |
edsbas.E8C8E352 |
| Database: |
BASE |