Electrochromic materials with enhanced ultraviolet stability
First Claim
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1. An electrochromic compound comprising one or more redox centers, linked by a linking group having series of one or more σ
- or π
bonds to one or more energy receptor sites, said energy receptor site capable of accepting excited state energy from said redox center or energy from outside said electrochromic compound.
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Abstract
Electrochromic devices and materials having enhanced daylight stability are described. The materials have a redox center linked to an energy receptor site that may serve to dissipate excited state energy from the redox center, alternatively the receptor site may absorb harmful radiation prior to the absorption by the redox center.
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Citations
22 Claims
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1. An electrochromic compound comprising one or more redox centers, linked by a linking group having series of one or more σ
- or π
bonds to one or more energy receptor sites, said energy receptor site capable of accepting excited state energy from said redox center or energy from outside said electrochromic compound. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- or π
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15. An electrochromic medium comprising at least one anodic electroactive and at least one cathodic electroactive compound, at least one of said electroactive compounds comprising an electrochromic compound with one or more redox centers, linked by a series of one or more σ
- or π
bonds to one or more energy receptor sites, said energy receptor site capable of accepting excited state energy from said redox center or energy from outside said electrochromic compound. - View Dependent Claims (16, 17, 18, 19)
- or π
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20. An electrochromic device comprising:
- a first transparent substrate, a second substrate, a sealing member disposed between said first and second substrates to define a chamber;
an electrochromic medium disposed in said chamber, said electrochromic medium comprising at least one anodic electroactive and at least one cathodic electroactive compound, at least one of said electroactive compounds comprising an electrochromic compound with one or more redox centers, which is either anodic or cathodic, linked by a series of one or more 6 or it bonds to one or more energy receptor sites, said energy receptor site capable of accepting excited state energy from said redox center or from outside said electrochromic compound. - View Dependent Claims (21, 22)
- a first transparent substrate, a second substrate, a sealing member disposed between said first and second substrates to define a chamber;
Specification