Exceptional Second Near-Infrared Window Organic Photothermal Material for High-Temperature Applications Activated by a 1064 nm Laser

IF 8.7 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY ACS Materials Letters Pub Date : 2025-02-17 DOI:10.1021/acsmaterialslett.4c02552

Huaxin Yang, Weifang Wang, Ping Deng* and Yan Yu*,

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Abstract

High-temperature photothermal response functional materials are an important branch of advanced photothermal materials. However, pure organic high-temperature photothermal materials are currently relatively scarce, and their molecular design and synthesis are challenging. In this research, a highly efficient [2 + 2] cycloaddition–retroelectrocyclization reaction has been carried out between the precursor molecule containing N,N-diphenyl-4-(phenylethynyl)aniline and piperazine-2,5-dione units (TP) and the typical electron-deficient unit 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (4F-TCNQ), and a rigid and twisted high-temperature photothermal organic material (named TTP) has been successfully designed and synthesized. This material is easy to synthesize and solution-processable, has broad spectral absorption (320–1900 nm), and can be triggered for high-temperature (∼400 °C) photothermal response by a near-infrared region II (NIR-II) laser (1064 nm). It has also been successfully applied to laser ignition, the construction of high-temperature shape memory actuators, and photowelding of metals with a 1064 nm laser, demonstrating the attractive potential for high-temperature NIR-II photothermal applications.

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特殊的第二近红外窗口有机光热材料，用于1064nm激光激活的高温应用

高温光热响应功能材料是先进光热材料的一个重要分支。然而，纯有机高温光热材料目前相对稀缺，其分子设计和合成具有挑战性。本研究在含有N，N-二苯基-4-（苯乙基）苯胺和哌嗪-2,5-二酮单元（TP）的前体分子与典型的缺电子单元2,3,5,6-四氟-7,7,8,8-四氰喹啉二甲烷（4F-TCNQ）之间进行了高效的[2 + 2]环加成-反电环化反应，成功设计并合成了刚性扭曲的高温光热有机材料（TTP）。该材料易于合成和溶液加工，具有广谱吸收（320-1900 nm），并且可以通过近红外区II （NIR-II）激光（1064 nm）触发高温（~ 400°C）光热响应。它还成功地应用于激光点火、高温形状记忆驱动器的构建以及1064 nm激光金属的光焊接，展示了高温NIR-II光热应用的诱人潜力。

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来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

期刊介绍： ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.