heynderickx arnault CINaM

Optical and electrical properties of organic functional materials. (Dr Arnault Heynderickx in collaboration with Dr Olivier Siri)

Sponsored by French research national agengy (ANR), a portion of our research is dedicated to developing new p-conjugated systems exploiting efficient photomodulation and/or PH modulation to obtain a variety of advanced materials.

The preliminary result will be published soon.

Diarylethene with a fluorescent chromophore in the bridge (Dr Arnault Heynderickx in collaboration with Pr. C. Moustrou)

Route to High-Contrast Memory Switching and Nondestructive Readout using fluorescence.
Current project focus on the use of photochromic materials for 3D memory because of several major advantages over current optical systems, including their erasable/rewritable capability,
high resolution, and high sensitivity. Among the several classes of photochromic materials, diarylethenes with heterocyclic aryl groups are the most promising candidates for applications
because of their excellent fatigue resistance, picoseconds switching time, high photoisomerization quantum yields, and absence of thermal isomerization.
Various optical systems for reading and writing 3D memories using diarylethene
derivatives as storage media have been reported, where several methods using fluorescence readout were used to avoid destructive readout. The fluorophore were linked or mixted to diarylthenes.

A novel photochromic diarylethene with a fluorescent chromophore in the bridge moiety was synthesized. The fluorescent switching properties was observed in solution with UV/VIS irradiation, accompanying the ring-opening and ring-closed photoisomerization of diarylethene.