Toward Fluorescent Memories with Nondestructive Readout:Photoswitching of Fluorescence by Intramolecular Electron Transfer in a Diaryl Ethene-Perylene Bisimide Photochromic System

摘要

Photochromic compounds change their optical and electronic properties by reversible photochemical reactions upon irradiation and are therefore suitable for many tasks.Very recently,the application of photochromic compounds to the imaging of living cells by single-molecule photoswitching has been demonstrated.In the last few years diaryl ethenes(DAEs)have evolved as highly promising photochromic molecules for optical data storage because of their durable persistency and the thermal irreversibility of their closed and open forms.