Organic electrochromic materials for optical attenuation in...

Details Organic electrochromic materials for optical attenuation in... Organic electrochromic materials for optical attenuation in...

C - Chemistry, Metallurgy

07

F

C07F 15/00 (2006.01) C07C 243/38 (2006.01) C07C 271/20 (2006.01) C08F 8/42 (2006.01) C08G 18/38 (2006.01) C08G 18/80 (2006.01) C08G 61/12 (2006.01) C08G 63/685 (2006.01) C08J 5/18 (2006.01) C08L 75/06 (2006.01) G02F 1/061 (2006.01) H01L 51/30 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2348288

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.

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