TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The acceptor repeating units are isolated from each other by the donor repeating units. The donor repeating units are present in even numbered monodispersed sequences between acceptor repeating units; or present in polydispersed sequences between acceptor repeating units, where smallest sequence has at least 2 donor repeating units. The acceptor repeating units comprise sequences of acceptor repeating units including 2,1,3-benzothiadiazole units; and at least one derivative of thiadiazoloquinoxaline, quinoxaline, thienothiadiazole, thienopyrazine, pyrazinoquinoxaline, benzobisthiadiazole, and/or thiadiazolothienopyrazine. The donor repeating units comprise at least one thiophene containing repeating unit including 3,4-bis(alkoxy)thiophene and/or bis-alkyloxy substituted 3,4-alkylenedioxythiophene; and at least one fused-thiophene substituent. The donor repeating units comprise at least one mono-, di- or poly-alkyloxy substituted thiophenes; at least one mono-, di- or poly-aryloxy substituted thiophenes; at least one di- or poly-aryloxy alkoxy substituted thiophenes; at least one mono-, di- or poly- alkoxy substituted 3,4- alkylenedioxythiophenes; at least one mono-, at least one di- or poly- aryloxy substituted 3,4-alkylenedioxythiophenes; and/or at least one di- or poly- aryloxy alkoxy substituted 3,4-alkylenedioxythiophenes. The DA-oligomer comprises at least one oligomer of formula H-(D)m-A-(D)m'-H and/or H(DxD'y)m-A-(Dx'D'y')m'-H; and additional oligomer of formula H-(DxD'y)-A'-(DxD'y)-H, H-(DxD'y)-(A)n(DxD'y')-H, H-(DxD'y)(A')n'-(Dx'D'y')-H, H-(DxD'y)-(Aw'A'z)-(DxD'y')-H, H-((DxD'y)-(A))n-(Dx'D'y')-H, and/or H-(DxD'y)-A-(Dx'D'y')-A'-(Dx'D'y')-H.A, A'=acceptor unit;D, D'=donor units;m, m', n, n'=1-5 (monodispersed or polydispersed);x=0 to m;x'=0 to m';y=m-x;y'=m'-x;w=0 to n'; andz=n'-w, where either D or D'can be adjacent to A, A'or a terminal unit.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The DA-CP comprises a soluble polymer, and donor-acceptor electrochromic polymer. EXAMPLE - No suitable example given.