Cross-Linkable Fluorene-Diphenylamine Derivatives for Electrochromic Applications

摘要: Multicolor electrochromic systems based on heat cross-linkable arylamine-substituted fluorene derivatives, FD and FDOMe, are reported. These derivatives with pendant vinyl groups have been synthesized by the Buchwald–Hartwig amination reaction were well-characterized using various analytical spectroscopic techniques such as NMR, ESI-MS, single-crystal X-ray diffraction analysis. FDOMe exhibited thermally activated cross-linking above their melting temperatures, which was confirmed through absorption, differential scanning calorimetry (DSC), FT-IR, wide-angle (WAXD) techniques. Cross-linked films (FD-X) ITO showed two reversible redox peaks at 0.74 0.91 V (versus Ag/AgCl) that correspond to formation of radical cations dications, respectively. The corresponding observed 0.6 0.8 for cross-linked (FDOMe-X). Spectroelectrochemical studies revealed multicolor electrochromism FD...