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Citation: Guan Zi-Sheng, Ma Ying, Cao Ya-An, Ji Xue-Hai, Yao Jian-Nian. Characterization of the Photochromic and Electrochromic Titania Gel[J]. Acta Physico-Chimica Sinica, ;2000, 16(01): 5-8. doi: 10.3866/PKU.WHXB20000102 shu

Characterization of the Photochromic and Electrochromic Titania Gel

1.
Center of molecular Science,Institute of chemistry,Chinese Academy of Sciences,Beijing 100080

Received Date: 3 September 1999
Available Online: 15 January 2000

Titania gel is very sensitive to change of color to blue-purple by UV irradiation and to brown color under extra electric field polarzation. The UV absorption spectra of the photochromic (PC) and electrochromic(EC) titania gel are different to that of the nanocrystalline TiO_2 which changes to blue color by UV irradiation or under extra electric field polarization. The steady-state ESR measurements at room temperature indicate that ESR signals of Ti3+ appeared in PC and EC titania gel with the g values corresponding to 1.9505 and 1.9512, respectively.
- Titania gel,
- Photochromism,
- Electrochromism,
- ESR
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