The present invention relates to an electrochromic material, and a device
utilizing the electrochromic material, comprising a
substituted-1,1-dioxo-thiopyran of the general structure I: ##STR00001##
wherein: X is carbon, nitrogen, oxygen, or sulfur; n is 0, 1 or 2; R3
is independently an electron withdrawing group or a substituted or
unsubstituted alky or aryl group; R1 and R5 each independently represent
a substituted or unsubstituted alkyl group, a substituted or
unsubstituted aryl group, or a substituted or unsubstituted heterocyclic
group; and R2 and R4 each independently represent hydrogen, or an
electron withdrawing group, or a substituted or unsubstituted alkyl
group.