The invention provides generally a new type of organic electrochromic Near Infrared (NIR)-active materials capable of absorbing and attenuating the light in the NIR region around 1550 nm and forming thin films on electrodes for variable optical attenuator (VOA) applications. They have utility in planar VOA devices. The materials are ruthenium complexes. Unsymmetrical complexes having two different substituents are disclosed, where one substituent is more electron-donating than the other. Complexes which are dimers or trimers (symmetrical or unsymmetrical) are disclosed, as are polymeric complexes. Crosslinked polymeric complex films are also disclosed.
该发明通常提供了一种新型的有机电致变色近红外(NIR)活性材料,能够吸收和衰减大约1550纳米附近的NIR区域的光,并形成薄膜在电极上,用于可变光学衰减器(VOA)应用。它们在平面VOA设备中具有实用性。这些材料是
钌配合物。披有两种不同取代基的非对称配合物被披露,其中一个取代基比另一个更具电子给予性。披有二聚体或三聚体(对称或非对称)的配合物被披露,以及聚合物配合物。还披露了交联聚合物复合薄膜。