Photoswitching of Conductance in Diarylethene-Metal Nanoparticles Hybrid System

制备了光致变色二乙烯二硫醇与金纳米粒子组成的网络，并对其光化学反应性和光开关电导进行了研究。根据二乙烯单元的光致变色反应，该网络表现出完全可逆的电导光开关。这种切换行为是由于分子π共轭长度的变化引起的。由于高开关比和良好的可逆性，这种开关系统为复杂的分子电路开辟了可能性。

The networks composed of photochromic diarylethene dithiols and gold nanoparticles were prepared, and the photochemical reactivity and photoswitching of the conductance were studied. The networks showed a completely reversible photoswitching of the conductance according to the photochromic reactions of the diarylethene units. The switching behavior is attributed to the change of the π-conjugation length of the molecule. Because of the high switching ratio and good reversibility this switching system opens up the possibility of sophisticated molecular electric circuits.