Redox Dependent Color Modulating Copper(I) Complex for Flexible Electrochromic Device

IF 3 4区化学 Q3 CHEMISTRY, PHYSICAL

ChemPhotoChem Pub Date : 2025-01-08 DOI:10.1002/cptc.202400354

Laxman Sarjerao Kharabe, Bhumika Sahu, Shivendu Mishra, Rajesh Kumar, Abhinav Raghuvanshi

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Abstract

Pursuing the development of eco-friendly, cost-effective and flexible materials that offer high-color contrast and low power consumption is a promising approach for advancing the next-generation optoelectronic devices. Herein, we report the synthesis of a heteroleptic copper(I) complex [Xantphos-Cu-cmdf]PF₆ (C1), in high yield, using Xantphos and cmdf ligands. The complex has high thermal stability and displays low-energy absorption between 360 and 470 nm due to the metal-to-ligand charge transfer (MLCT) transition. The electrochemical analysis confirmed the electrochromic properties of C1. A bilayer electrochromic device (ECD) incorporating P3HT and C1 demonstrated excellent color modulation (45 %) and rapid switching times (less than one second). Furthermore, the flexible ECD utilizing C1 showed superior performance compared to its solid-state counterpart, with high efficiency (~200 cm²/C), color modulation (69 %) and sub-second switching times. The high coloration efficiency and fast switching time of the ECDs developed from stable and cost-effective Cu(I) complex, C1, make it a promising candidate for real-world electrochromic applications.

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用于柔性电致变色器件的氧化还原依赖性颜色调制铜(I)配合物

追求具有高色彩对比度和低功耗的环保、高成本效益和柔性材料的开发是推进下一代光电器件的有前途的方法。本文报道了以Xantphos和cmdf为配体，高收率合成了杂电性铜(I)配合物[Xantphos- cu -cmdf]PF6 （C1）。由于金属-配体电荷转移（MLCT）跃迁，该配合物在360 ~ 470 nm范围内具有较高的热稳定性和较低的能量吸收。电化学分析证实了C1的电致变色性质。结合P3HT和C1的双层电致变色器件（ECD）表现出出色的颜色调制（45%）和快速的开关时间（不到一秒）。此外，使用C1的柔性ECD与固态ECD相比，具有更高的效率（~200 cm2/C），颜色调制（69%）和亚秒级开关时间。由稳定且具有成本效益的Cu(I)配合物C1开发的ECDs具有高显色效率和快速开关时间，使其成为实际电致变色应用的有希望的候选者。

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来源期刊

ChemPhotoChem Chemistry-Physical and Theoretical Chemistry

CiteScore

5.80

自引率

5.40%

发文量

165

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