Fluorescent boron dipyrrole fluorescent dye and its preparation method and application

Abstract

The invention provides a fluoroborate dipyrrole fluorescent dye, a preparation method and application thereof, and belongs to the field of fluorescent dyes. The invention provides a fluoroboron dipyrrole fluorescent dye, centering on BODIPY, introducing toluene at the 8th position, increasing the conjugated system, introducing propylene at the 3rd and 5th positions, improving the electron-absorbing ability, making The ultraviolet absorption spectrum and the fluorescence emission spectrum of the obtained fluoroboron dipyrrole fluorescent dye have a large red shift, a strong absorption peak in the green light range, and a strong emission peak in the green light range in the fluorescence emission spectrum.

Description

technical field [0001] The invention relates to the field of fluorescent dyes, in particular to a fluoroboron dipyrrole fluorescent dye and a preparation method and application thereof. Background technique [0002] Fluorescent dyes have been around for nearly a century and have attracted the attention of scientists from multiple disciplines. Fluorescent dyes are used as functional materials in many fields, such as light energy conversion, organic light-emitting devices, biological imaging, diagnosis and treatment, etc., and have made great progress. Many kinds of highly fluorescent organic dyes have been found now. As one of many dyes, fluoroboron dipyrrole fluorescent dyes have high fluorescence quantum yield and molar extinction coefficient, and also have strong photostability and Chemical stability has attracted the attention of many researchers. However, the red shift of the existing fluoroborate dipyrrole fluorescent dyes is relatively small. For example, in the pri...

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Problems solved by technology

However, the red shift of the existing fluoroboron dipyrrole fluorescent dyes is relatively small

For example, in the prior art "Photophysical Properties of Borondipyrromethene Analogues in Solution" (J.Phy.Chem.A 2005, 109, 7371-7384), a benzene ring is introduced at the 8th position of the BODIPY core, and a methyl group is introduced at the 3rd and 5th positions, The obtained fluoroboron dipyrrole derivative has a stronger absorption peak at 520nm and a stronger emission peak at 525nm, making it suitable for use in green photosensitizers, green fluorescent probes, and light-emitting layers of organic light-emitting diodes restricted

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