《Design of twisted conjugated molecular systems towards stable multi-colored electrochromic polymers》 was published in Dyes and Pigments in 2020. These research results belong to Gu, Hua; Xue, Yu; Hu, Faqi; Jian, Nannan; Lin, Kaiwen; Wu, Tao; Liu, Ximei; Xu, Jingkun; Lu, Baoyang. HPLC of Formula: 2635-13-4 The article mentions the following:
Promising advancement of conjugated polymers in electrochromic devices require to design high-performance electrochromic polymers with rich color conversion and long-term stability under cyclic elec. loads. Here we report a new strategy in developing multi-colored electrochromic polymers with good stability via twisted conjugated mol. engineering. A series of twisted hybrid precursors are synthesized by coupling ortho-alkylenedioxybenzenes with EDOT units, and their corresponding polymers are facilely electrosynthesized at relatively low polymerization potentials. The structure-property relationships of such ortho-alkylenedioxybenzene-EDOT hybrid precursors and polymers are systematically elucidated via DFT calculations, spectral, morphol., electrochem. and spectroelectrochem. anal., etc. We demonstrate that the dihedral angle between ortho-alkylenedioxybenzenes and EDOT moieties can substantially affect the electrochem. and electrochromic properties of polymers. As the dihedral angle and electron cloud d. increases, these hybrid polymers display distinct multiple color switching nature and good overall performance including high coloration efficiency (>200 cm2 C-1), decent optical contrast (>45%), fast switching (<1 s), and excellent switching stability (96% of optical contrast after 3500 cycling) under cyclic elec. loads. With these findings, this work will provide novel insights for rational design of stable and highly efficient multi-colored electrochromic polymers. In the part of experimental materials, we found many familiar compounds, such as 5-Bromobenzo[d][1,3]dioxole(cas: 2635-13-4HPLC of Formula: 2635-13-4)
Furthermore, the coupling of 5-Bromobenzo[d][1,3]dioxole(cas: 2635-13-4) with β-methallyl alcohol was catalyzed by Pd(OAc)2 in combination with P(t-Bu)3.HPLC of Formula: 2635-13-4
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary