Ces travaux de thèse ont porté sur le transport dépendant du spin dans des monocouches auto-assemblées (SAMs) de molécules photocommutables de diaryléthènes. Dans ce cadre, des jonctions tunnel magnétiques (MTJs) de NiFe/diaryléthènes/Co ont été fabriquées et l'impact de la commutation des molécules sur les propriétés de transport dépendantes du sp...
Diarylethene molecules used as molecular switches are envisioned as components of molecular electronic devices. These photochromic molecules exhibit high thermal stability, resistance to fatigue, and switching efficiency. Nevertheless, the switching of most diarylethenes (DAEs) is asymmetric: their photocycloreversion reaction possessing a much low...
Published in Angewandte Chemie (International Ed. in English)
Doubly methylated diarylethenes derived from 2′‐deoxyuridine are reported with high thermal stability, fatigue resistance, and fluorogenicity. With these, an all‐optical excitonic switch consisting of two oligonucleotides has been designed: one containing the fluorogenic diarylethene as a fluorescence donor and the other a tricyclic cytidine (tC) a...
Published in Journal of fluorescence
Steady-state absorption and fluorescence spectra, fluorescence decay kinetics of CdSe/ZnS quantum dots (QD) with photochromic diarylethenes (DAE) in toluene have been studied. Two kinds of QDs emitting at 525 and 600 nm were investigated and DAE were selected to ensure good overlap of their photoinduced absorption band with QDs emission spectra. It...
Published in ChemPlusChem
The efficient switching that can occur between two stable isomers of diarylethenes makes them particularly promising targets for opto- and molecular electronics. To examine these classes of molecules for electronics applications, they have been subjected to a series of scanning tunneling microscopy (STM) experiments, which are the focus of this Rev...
Published in Journal of Fluorescence
Being a “lock-unlock” system, gated photochromism is generally applied in nondestructive readout for optical memory materials. In the presented paper, we successfully constructed molecular keypad locks by introduction of the gated photochromism. A series of diarylethenes compounds (DAEs) based on fluorescent 5-methoxy-2-pyridyl thiazoles, were prep...
Published in Dyes and Pigments
The photochromic reaction of two derivatives of bisthiazolylindenols was investigated in three solvents of various polarities (C6D12, THF-d8 and CD3CN) by NMR spectroscopy. Photoirradiation can generate two diastereomeric closed forms. High conversion ratio and large diastereomer excess were obtained and the reasons of the excellent properties were...
Published in Computational and Theoretical Chemistry
Using ab initio spectroscopic tools, we have investigated the structural and electronic properties of a photochromic molecule grafted on a Au13 cluster. To simulate the electronic absorption spectra of this hybrid system, we relied on a (Time-Dependent) Density Functional Theory protocol. It is shown that this TD-DFT procedure combined with an anal...
Using ab initio spectroscopic tools, we have investigated the structural and electronic properties of a photochromic molecule grafted on a Au13 cluster. To simulate the electronic absorption spectra of this hybrid system, we relied on a (Time-Dependent) Density Functional Theory protocol. It is shown that this TD-DFT procedure combined with an anal...
