Phosphorescent heavy metal iridium complex, multicolor nano material with adjustable phosphorescent emission and preparation method thereof

Abstract

The invention discloses a phosphorescent heavy metal iridium complex, a multicolor nano material with adjustable phosphorescent emission and a preparation method thereof. The phosphorescent heavy metal iridium complex is prepared, and the novel multicolor nano material with adjustable phosphorescent emission is obtained by utilizing the property of energy transfer between the high phosphorescent emission of the metal iridium complex and the iridium complex and a supermolecule self-assembly method, and regulating different doping ratios of the iridium complex under the mutual action between carboxylic acid groups and metal ions of the iridium complex.

Description

technical field [0001] The invention relates to the field of organic nano-phosphorescent materials, in particular to a phosphorescent heavy metal iridium complex, a multicolor nano-material with adjustable phosphorescent emission and a preparation method thereof. Background technique [0002] In the past decade, the application of luminescent materials in various fields, such as fluorescent lamps, light-emitting diodes (LEDs), displays, and lighting systems, has been receiving extensive attention. However, these fields require simple material structure design, low cost and unique performance advantages. It is difficult in materials chemistry to find a single chromophore that can emit multiple colors. In order to obtain luminescent materials with rich and colorful colors, so far, the easiest way is to simply mix several compounds with different luminescent colors, but the disadvantage of this method is that it is difficult to control the long-term color balance of multicolor...

AI Technical Summary

Problems solved by technology

In order to obtain luminescent materials with rich and colorful colors, the easiest way so far is to simply mix several compounds with different luminescent colors, but the disadvantage of this method is that it is difficult to control the long-term color balance of multicolor light-emitting devices.

The first is the quantum efficiency issue of solid-state organic emission

Most organic light-emitting materials exhibit strong non-radiative decay in the solid state, which leads to a double decrease in luminescence quantum efficiency and a broadening and red-shifting of the emission peak compared with that in dilute solutions.

This situation largely limits the practical application of organic solid-state materials in light-emitting devices.

The second issue is the energy transfer efficiency between donor and acceptor

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