Post-doctoral position (M/F) to study the EPR/time-resolved spectroscopy of diarylethene-functionalized polyoxometallates.

23 Mar 2024
Job Info

Organisation/Firm

CNRS

Division

Laboratoire Avancé de Spectroscopie pour les Interactions, la Réactivité et l’Environnement

Analysis Discipline

Physics

Researcher Profile

First Stage Researcher (R1)

Nation

France

Software Deadline

12 Apr 2024 – 23:59 (UTC)

Kind of Contract

Short-term

Job Standing

Full-time

Hours Per Week

35

Supply Beginning Date

29 Apr 2024

Is the job funded by means of the EU Analysis Framework Programme?

Not funded by an EU programme

Is the Job associated to employees place inside a Analysis Infrastructure?

No

Supply Description

Diarylethenes (DAEs) are very well-known for his or her strong photochromic properties, which embrace wonderful fatigue resistance, thermal reversibility, and excessive quantum yield. The combination of diarylethenes into molecular cages has revealed distinctive options like photoresponsive encapsulation and environment friendly power switch. Polyoxometalates (POMs), primarily composed of early transition metals, are distinguished by their numerous structural varieties and catalytic prowess, particularly in redox reactions. Ritchie et al. have made a big breakthrough by growing the primary POM-DAE molecular cage. This cage accommodates a number of DAE ligands that endure sequential electrocyclization post-illumination, confirmed by way of transient absorption and NMR spectroscopy. The transient absorption research additional disclosed extra photoproducts throughout the illumination course of. These embrace a charge-separated electron-hole pair of DAE+• and POM- with a lifespan exceeding 200 µ-seconds. This discovering means that POM-DAE combos might open new avenues in photocatalytic purposes by leveraging these long-lived charge-separated states. (collaboration Chris Ritchie, Monash College)
The researcher’s mission will likely be to hold out a brand new measurement and evaluation marketing campaign on a sequence of POM-DAE samples utilizing EPR spectroscopy and transient absorption spectroscopy – strategies obtainable at LASIRE.

POM-DAE pattern preparation underneath inert ambiance
UV-VIs /IR/RMN evaluation spectroscopy
EPR spectroscopy
femtosecond absorption spectroscopy
flash photolysis (µseconds)

The post-doc is a transversal motion within the LASIRE laboratory between the 2 groups.
The experiment will likely be launched at C4 (EPR) and C8 (TA).
All chemical preparations will happen in a newly renovated laboratory.
For transient spectroscopy, the researcher will likely be supported by the analysis engineer.

Necessities

Analysis Discipline

Physics

Training Degree

PhD or equal

Languages

FRENCH

Degree

Fundamental

Analysis Discipline

Physics

Years of Analysis Expertise

None

Extra Info
Eligibility standards

Polyoxometallate chemistry
stationary spectroscopy
EPR spectroscopy
transient absorption spectroscopy (TA)

Web site for extra job particulars

https://emploi.cnrs.fr/Offres/CDD/UMR8516-STEALO-002/Default.aspx

Work Location(s)

Variety of provides obtainable

1

Firm/Institute

Laboratoire Avancé de Spectroscopie pour les Interactions, la Réactivité et l’Environnement

Nation

France

Metropolis

VILLENEUVE D ASCQ

Geofield

The place to use

Web site

https://emploi.cnrs.fr/Candidat/Offre/UMR8516-STEALO-002/Candidater.aspx

Contact

Metropolis

VILLENEUVE D ASCQ

Web site

http://lasir.cnrs.fr

STATUS: EXPIRED