TRAN, Ngoc Minh; PALLUEL, Marlène; DARO, Nathalie; CHASTANET, Guillaume; FREYSZ, Eric

doi:10.1021/acs.jpcc.1c03218

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TRAN, Ngoc Minh
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

PALLUEL, Marlène
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

DARO, Nathalie
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Ce document a été publié dans

Journal of Physical Chemistry C. 2021, vol. 125, n° 41, p. 22611–22621

American Chemical Society

Résumé en anglais

We investigate the spin-state photoswitching process in Au@SCO nanohybrids made of gold nanorods coated by a spin crossover (SCO) shell of polymeric triazole based Fe(II) complexes of [Fe(Htrz) 2 trz] (BF 4). Our research is performed exciting our samples with near-infrared quasi-continuous wave or nanosecond pulse, tunable from visible to near-infrared range. Time-resolved experiments ranging from millisecond down to nanosecond timescales reveal the dynamics during the spin-state transition. Upon excitation, the thermal photoswitching of the sample happens within hundreds of milliseconds for quasi-continuous wave excitation. It happens within tens of nanoseconds for a nanosecond pulse. Compared to the SCO [Fe(Htrz) 2 trz] (BF 4) nanoparticles powder, the peak power of quasi-continuous wave or fluence of the nanosecond laser required to induce the spin state transition in the nanohybrid is reduced. A< Réduire

DOI

http://dx.doi.org/10.1021/acs.jpcc.1c03218

Project ANR

Nanomatériaux hybrides pour une commutation photo-thermique contrôlée

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Unités de recherche

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026