Crucial Role of Palladium (0/II) Catalyst in the Synthesis of the Multi-Resonance Thermally Activated Delayed Fluorescence Emitters

IF 4.6 1区化学 Q1 CHEMISTRY, ORGANIC

Organic Chemistry Frontiers Pub Date : 2025-05-30 DOI:10.1039/d5qo00522a

Ajeet Chandra, Paramasivam Palanisamy, Aradhya Rajput, Jang Hyuk Kwon

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Abstract

Boron and nitrogen/oxygen-based multi-resonance thermally activated delayed fluorescence (MR-TADF) emitters represent cutting-edge OLED technology in both academic and industrial research, demonstrating high color purity and power efficiency. However, the advancement of these emitters is somewhat constrained due to limited synthetic methodologies and low yields of the emitters and their respective precursors. Therefore, comprehensive knowledge of synthetic approaches is necessary, particularly concerning the precursors for improved molecular development. Most precursors for the final emitter are synthesized through the formation of C-C/C-X bonds, which involve palladium-based catalysts in addition of adhitives as crucial reagents. In this review, we thoroughly discuss the synthetic approaches utilized to prepare the intermediates with the palladium catalyst in conjunction with various ligands with the most of the recent reports. Additionally, we outline the general criteria for selecting the Pd catalyst and ligand, along with their respective molar equivalents and the corresponding yields.

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钯（0/II）催化剂在合成多共振热激活延迟荧光发射体中的关键作用

硼和氮/氧基多共振热激活延迟荧光（MR-TADF）发射器在学术和工业研究中都代表了最前沿的OLED技术，具有高颜色纯度和高能效。然而，由于合成方法的限制和排放物及其各自前体的低产量，这些排放物的进步在一定程度上受到限制。因此，对合成方法的全面了解是必要的，特别是对改善分子发育的前体的了解。最终发射体的前体大多是通过形成C-C/C-X键来合成的，这包括钯基催化剂和添加剂作为关键试剂。本文综述了钯催化剂与各种配体结合制备中间体的合成方法，并对近年来的报道进行了综述。此外，我们概述了选择钯催化剂和配体的一般标准，以及它们各自的摩尔当量和相应的产率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Organic Chemistry Frontiers CHEMISTRY, ORGANIC-

CiteScore

7.90

自引率

11.10%

发文量

686

审稿时长

1 months

期刊介绍： Organic Chemistry Frontiers is an esteemed journal that publishes high-quality research across the field of organic chemistry. It places a significant emphasis on studies that contribute substantially to the field by introducing new or significantly improved protocols and methodologies. The journal covers a wide array of topics which include, but are not limited to, organic synthesis, the development of synthetic methodologies, catalysis, natural products, functional organic materials, supramolecular and macromolecular chemistry, as well as physical and computational organic chemistry.