Chalcogen bridged viologen small molecules, polymers, derivatives and application thereof
A technology of chalcogen elements and viologens, applied in optics, instruments, nonlinear optics, etc., can solve the problems of low conjugation, weak absorption of visible light, and restrictions on the application of viologen derivatives, and achieve low energy level difference, Effect of improving electron transport performance
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[0076] The chalcogen-containing viologens and biquinoline small molecules and polymers prepared by the present invention are prepared through the following steps:
[0077] (1) Preparation of chalcogen-bridged viologens 2 and 3
[0078] Compound 1 (0.7 mmol) was dissolved in DMF, and added dropwise / aminoalkyl chloride / aminoalkyl bromide / aminoalkyl iodide / aryl bromide / aryl iodide. React at 60°C for two days. The formed precipitate was isolated by vacuum filtration and washed with dichloromethane to give chalcogen-bridged viologen 2, which was then ion-exchanged to give 3. R 1 = aminoalkyl, aryl; E = S, Se, Te; X 1 — = Cl — 、Br — , I — ;X 2 — = CF 3 SO 2 o — 、PF 6 — 、CH 3 COO — , OTf — .
[0079] (2) Preparation of chalcogen-containing viologen polymers 4 and 5
[0080] Compound 1 (0.7mmol) and α,α'-dichloro-p-R 2 / α,α'-dibromo-p-R 2 / α,α'-diiodo-p-R 2 Dissolve in DMF and react at 60°C for 5 days. The formed precipitate was isolated by vacuum filtration and...
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