D-pi-A dipyrro fluorescent dye and synthesis method thereof

Abstract

The invention discloses a vinyl bridged bipolypyrrole compound containing an electron donor, pi and an electron acceptor simultaneously (D-pi-A) and a synthesis method of the compound. The structure of the compound is shown as the formula in the description, wherein a substituent group R1 is an electron-donating group such as an alkoxy group, an amino group, a hydroxyl group and the like, and R2 is an electron-withdrawing group such as an acyl group, an aldehyde group, a carboxyl group, an acylamino group, a sulfonic group, a cyano group, a nitro group, a haloform group, a quaternary amine group and the like. The D-pi-A vinyl bridged bipolypyrrole compound is generated finally from a 2,3,3-trimethylindole derivative and a pyrrole-2-carboxaldehyde derivative as raw materials through a Knoevenagel condensation reaction under the action of an organic catalyst. The synthesis method of the compound containing the electron donor, pi and the electron acceptor (D-pi-A) is simple, reaction conditions are easy to control, and the method has universal adaptability. Pi conjugation, band gap and photoelectric property of the material can be regulated and controlled effectively by selecting proper fluorophore, electron donor and electron acceptor.

Description

technical field [0001] The invention discloses a vinyl bridged dipyrrole compound containing an electron donor-π-electron acceptor (D-π-A type) and a synthesis method thereof, and the compound intermediate can be widely used in Environmental, analytical, materials science and other fields. Background technique [0002] In a wide range of organic π systems, electron donor-π-electron acceptor (D-π-A) type organic compounds have various excellent optoelectronic properties due to their low energy bandgap, and have attracted more and more attention in recent years. big interest. Another attractive advantage of this type of material is that its π-conjugation, energy bandgap, and optoelectronic properties can be effectively tuned by selecting appropriate fluorophores, electron donors, and electron acceptors. So far, dyes of D-π-A type have been developed and applied in various fields. The existing synthetic vinyl bridged compounds generally have the following methods: [0003] ...

AI Technical Summary

Problems solved by technology

[0011] The reaction process is more complicated, the reagents and reaction conditions used are more harsh, and the production cost is higher

[0012] It can be seen that the above-mentioned methods generally have some disadvantages: long reaction time, harsh conditions, low yield, and difficult expansion of the substrate

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