Conductance Photoswitching of Diarylethene-Gold Nanoparticle Network Induced by Photochromic Reaction
Conductance Photoswitching of Diarylethene-Gold Nanoparticle Network Induced by Photochromic Reaction
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DOI：
10.1021/jp807479g
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发表时间：
2008-10-30
影响因子：
3.7
通讯作者：
Irie, Masahiro
中科院分区：
文献类型：
--
作者：
Matsuda, Kenji;Yamaguchi, Hidehiro;Irie, Masahiro
分子电导与分子结构的关系是分子电子学中的一个重要问题。光致变色分子在光的作用下，其分子结构发生相互转换，因此其分子电导应该是光控的。根据这一策略制备了光致变色二芳基乙烯基二硫醇与金纳米粒子组成的网络，并研究了其光化学反应性和电导的光开关。该网络表现出完全可逆的光开关的电导根据二芳基乙烯单元的光致变色反应。这种开关行为归因于分子π共轭长度的变化。由于高的开关比和良好的可逆性，这种开关系统开辟了复杂的分子电路的可能性。
The relationship between molecular conductance and molecular structure is an important issue in molecular electronics. Photochromic molecules can interconvert their molecular structures by light, so that the molecular conductance should be photocontrolled. According to this strategy 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 pi-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.