摘要
化学合成的有机光热材料因其良好的结构可控性,与传统无机材料相比在可加工性和功能性等方面具有明显优势。设计并通过简易的两步法成功制备了一种结构稳定且光热性能优异的芳香化开壳自由基材料(4NDPAO_(3))。核磁共振氢谱(^(1)H NMR)、质谱(MS)和紫外-可见-近红外光谱(UV-Vis-NIR)表征结果证实了目标产物化学结构。光热性能研究显示,该自由基材料在1.2 W/cm^(2)激光辐照下表面温度可达148℃,较其甲氧基前驱体提升近四倍。在太阳能驱动界面水蒸发的应用中,负载质量为36.1%的4NDPAO_(3)/多孔聚氨酯海绵复合材料在模拟太阳光辐照条件(1 kW/m^(2))下表现出显著的水蒸发性能,其蒸发速率和转换效率分别达到1.127 kg/(m^(2)·h)和78.40%。该研究为开发高效有机光热转换材料提供了新的分子设计策略和合成路径。
Chemically synthesized organic photothermal materials exhibit significant advantages over traditional inorganic counterparts in terms of processability and tunable functionality,owing to their well-defined and controllable molecular structures.In this work,a structurally stable aromatic open-shell radical material(4NDPAO3)with outstanding photothermal performance was designed and successfully synthesized via a two-step synthetic route.The chemical structure of the target compound was confirmed by nuclear magnetic resonance spectroscopy(1H NMR),mass spectrometry(MS),and ultraviolet-visible-near-infrared(UV-Vis-NIR)spectroscopy.Photothermal studies demonstrate that the radical material reaches a surface temperature of 148 C under laser irradiation at 1.2 W/cm^(2),representing nearly a fourfold enhancement compared to its methoxy-substituted precursor.For solardriven interfacial water evaporation,a 4NDPAO_(3)/porous polyurethane sponge composite with a loading mass of 36.1%exhibits excellent performance,achieving an evaporation rate of 1.127 kg/(m^(2)·h)and a solar-to-vapor conversion efficiency of 78.40%under simulated solar irradiation(1 kW/m^(2)).This work provides a promising molecular design strategy and synthetic approach for the development of high-performance organic photothermal conversion materials.
作者
何志波
向晶晶
Lemanowicz Marcin Tadeusz
刘卫东
孔玄庆
秦飞
谭峰亮
HE Zhi-bo;XIANG Jing-jing;LEMANOWICZ Marcin Tadeusz;LIU Wei-dong;KONG Xuan-qing;QIN Fei;TAN Feng-liang(School of Faculty of Materials and Environmental Engineering,Hunan University of Humanities,Science and Technology,Loudi 417000,China;Department of Chemical Engineering and Process Design,Faculty of Chemistry,Silesian University of Technology,ul.Akademicka 2A,44-100 Gliwice,Poland;National Engineering Research Center for Agrochemicals,Hunan Research Institute of Chemical Industry,Co.,Ltd.,Changsha 410014,China)
出处
《精细化工中间体》
2026年第2期57-64,共8页
Fine Chemical Intermediates
基金
湖南省自科基金区域联合基金项目:“开壳”有机光电材料的合成与应用研究(2025JJ70347)。
关键词
自由基
光热转换
界面水蒸发
开壳
free radicals
photothermal conversion
interface water evaporation
open-shell
