title: Synthesis of ultrahighly electron-deficient pyrrolo[3,4-d]pyridazine-5,7-dione by inverse electron demand Diels-Alder reaction and its application as electrochromic materials.
abstract: A new electron acceptor 6-alkylpyrrolo[3,4-d]pyridazine-5,7-dione (PPD) with a very low LUMO level has been synthesized via a challenging inverse electron demand Diels-Alder reaction between thiophene and furan-decorated tetrazine substrates and an electron-deficient 1-alkyl-1H-pyrrole-2,5-dione unit. The PPD monomer has been incorporated into a series of donor-acceptor-type conjugated polymers as electrochromic materials with good optical contrast, fast switching speed, and high coloration efficiency.
authors.affiliation: Institute of Materials Research and Engineering, A*STAR , 3 Research Link, Singapore 117602, Singapore.
authors.forename: Qun
authors.initials: Q
authors.lastname: Ye
authors.forename: Wei Teng
authors.initials: WT
authors.lastname: Neo
authors.forename: Ching Mui
authors.initials: CM
authors.lastname: Cho
authors.forename: Shuo Wang
authors.initials: SW
authors.lastname: Yang
authors.forename: Tingting
authors.initials: T
authors.lastname: Lin
authors.forename: Hui
authors.initials: H
authors.lastname: Zhou
authors.forename: Hong
authors.initials: H
authors.lastname: Yan
authors.forename: Xuehong
authors.initials: X
authors.lastname: Lu
authors.forename: Chunyan
authors.initials: C
authors.lastname: Chi
authors.forename: Jianwei
authors.initials: J
authors.lastname: Xu