| abstract |
The present invention provides an electrochromic material comprising a substituted-1,1-dioxo-thiopyran of general structural formula I and a device using the electrochromic material. Wherein X is carbon, nitrogen, oxygen or sulfur, n is 0, 1, or 2 and R 3 is independently an electron withdrawing group or a substituted or unsubstituted alkyl or aryl group. Each of R 1 and R 5 independently represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, and R 2 and R 4 are each independently And represents a hydrogen atom, an electron-withdrawing group, or a substituted or unsubstituted alkyl group. |