| 摘要 |
<p>Polymers of a 3,4-substituted pyrrole compound substituted by an electron-attractive group having a Hammett's substituent constant (σp) of 0.30 to 0.80 in at least one of the 3- and 4-positions are disclosed. The polymers are stable in the air in a dope-free state and shows distinct electrochromism. Some of them are soluble in an alkaline aqueous solvent. Therefore, they are useful as electrochromic elements, etc.</p> |
