Cole Jacqueline M, Gosztola David J, Velazquez-Garcia Jose de J
Cavendish Laboratory, Department of Physics, University of Cambridge, J.J. Thomson Avenue, Cambridge CB3 0HE, U.K.
ISIS Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot OX11 0QX, U.K.
J Phys Chem C Nanomater Interfaces. 2021 Apr 29;125(16):8907-8915. doi: 10.1021/acs.jpcc.1c02457. Epub 2021 Apr 19.
Materials that exhibit nanooptomechanical transduction in their single-crystal form have prospective use in light-driven molecular machinery, nanotechnology, and quantum computing. Linkage photoisomerization is typically the source of such transduction in coordination complexes, although the isomers tend to undergo only partial photoconversion. We present a nanooptomechanical transducer, -[Ru(SO)(NH)(3-bromopyridine)]tosylate, whose S-bound η-SO isomer fully converts into an O-bound η-OSO photoisomer that is metastable while kept at 100 K. Its 100% photoconversion is confirmed structurally via photocrystallography, while single-crystal optical absorption and Raman spectroscopies reveal its metal-to-ligand charge-transfer and temperature-dependent characteristics. This perfect optical switching affords the material good prospects for nanooptomechanical transduction with single-photon control.
以单晶形式表现出纳米光机械转导的材料在光驱动分子机器、纳米技术和量子计算中有潜在用途。在配位络合物中，连接光异构化通常是这种转导的来源，尽管异构体往往只发生部分光转化。我们展示了一种纳米光机械换能器——对甲苯磺酸-[Ru(SO)(NH)(3-溴吡啶)]，其与S键合的η-SO异构体完全转化为与O键合的η-OSO光异构体，该异构体在保持在100 K时是亚稳态的。通过光晶体学在结构上证实了其100%的光转化，而单晶光吸收和拉曼光谱揭示了其金属到配体的电荷转移和温度依赖性特征。这种完美的光学开关为该材料在单光子控制的纳米光机械转导方面提供了良好的前景。
