Novel quinoline-pyridine type viologens for near-infrared electrochromic devices

IF 6.3 2区材料科学 Q2 ENERGY & FUELS

Solar Energy Materials and Solar Cells Pub Date : 2025-09-20 DOI:10.1016/j.solmat.2025.113972

Yiying Han, Jiuzhou Cui, Xingxing Song, Xuan Wang, Haiwen Shi, Jian Liu

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引用次数: 0

Abstract

In this work, four novel viologen derivates (PTV, PTMV, TPTMV and FTPTMV) consisted of the similar backbone with one pyridine unit and one quinoline group were developed for all-in-one electrochromic devices. Different from the conventional viologens, four viologen derivates in this work showed stable transmittance and significant color changes throughout the electrochromic process. Under the stimulation of external voltage, the four derivatives can show changes from colorless to dark yellow-green. Specially, PTMV, TPTMV and FTPTMV with bulky and rigid moiety (norcamphor or camphor) demonstrated efficient near-infrared (NIR) electrochromic performance around 890 nm, involving high optical contrast over 90 %, high coloration efficiency over 150 cm² C⁻¹ and excellent cycling stability (remaining over 90 % after 2000 switching cycles). In addition, it also demonstrated outstanding performance in testing large-area devices. This work provided an effective strategy to molecular design of viologen derivates for NIR electrochromic devices with potential application in smart windows.

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用于近红外电致变色器件的新型喹啉-吡啶型荧光剂

在本工作中，开发了四种新型的由相似骨架组成的紫外光衍生物（PTV， PTMV， TPTMV和FTPTMV），用于一体化电致变色装置。与传统的紫致变色剂不同，本研究的4个紫致变色衍生物在电致变色过程中具有稳定的透过率和显著的颜色变化。在外加电压的刺激下，四种衍生物均呈现由无色到暗黄绿色的变化。特别地，PTMV， TPTMV和FTPTMV具有大块和刚性部分（去樟脑或樟脑），在890 nm左右表现出高效的近红外（NIR）电致变色性能，包括超过90%的高光学对比度，超过150 cm2 C - 1的高显色效率和出色的循环稳定性（在2000个开关循环后保持超过90%）。此外，它在测试大面积器件方面也表现出出色的性能。本研究为近红外电致变色器件中紫外光衍生物的分子设计提供了一种有效的策略，具有潜在的应用前景。

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来源期刊

Solar Energy Materials and Solar Cells 工程技术-材料科学：综合

CiteScore

12.60

自引率

11.60%

发文量

513

审稿时长

47 days

期刊介绍： Solar Energy Materials & Solar Cells is intended as a vehicle for the dissemination of research results on materials science and technology related to photovoltaic, photothermal and photoelectrochemical solar energy conversion. Materials science is taken in the broadest possible sense and encompasses physics, chemistry, optics, materials fabrication and analysis for all types of materials.