ELECTROCHROMIC COMPOSITION AND ELECTROCHROMIC ELEMENT
申请人:CANON KABUSHIKI KAISHA
公开号:US20170114274A1
公开(公告)日:2017-04-27
An electrochromic composition has an anodic electrochromic compound and a cathodic electrochromic compound, in which the anodic electrochromic compound is represented by General Formula [1]
and the cathodic electrochromic compound is represented by General Formula [2]
In General Formula 1, A
1
to A
4
represent substituents, R
1
and R
2
, and R
20
and R
21
represent a hydrogen atom or a substituent. n is an integer of 1 to 5. X represents a thiophene derivative and Y- represents an anion.
[EN] NOVEL ORGANIC COMPOUND<br/>[FR] NOUVEAU COMPOSÉ ORGANIQUE
申请人:CANON KK
公开号:WO2013099523A1
公开(公告)日:2013-07-04
The present invention provides an organic compound to be used in an electrochromic device. The organic compound has excellent oxidation-reduction repeating characteristics and shows high transparency in the bleached state without showing light absorption in the visible light region. The organic compound has a structure represented by Formula [1] according to Claim 1. In Formula [1], A1 and A2 represent substituents, and at least one of A1 and A2 is an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, or an optionally substituted aryl group. R1 represents a substituent, X represents an electrochromic portion, and n is an integer of 1 to 3.
There is provided an EC device having stability against redox reaction cycles, high transparency, i.e., the EC device does not absorb light in the visible region in a bleached state, and having excellent response speed. The electrochromic device includes a pair of electrodes and a composition arranged between the pair of electrodes, the composition containing an electrolyte and an organic electrochromic compound, in which the organic electrochromic compound includes an electrochromic portion that exhibits electrochromic properties and an aromatic ring directly bonded to the electrochromic portion, the electrochromic portion forms one conjugated plane, an atom of the aromatic ring and adjacent to an atom bonded to the electrochromic portion has a substituent having a volume equal to or larger than the volume of a methyl group, and a cathodically electrochromic organic compound is further contained in addition to the organic electrochromic compound.