State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.
Eco-chemical Engineering Cooperative Innovation Center of Shandong, Qingdao University of Science and Technology, Qingdao 266042, China.
Molecules. 2019 Apr 24;24(8):1623. doi: 10.3390/molecules24081623.
Light-driven phase change materials (PCMs) have received significant attention due to their capacity to convert visible light into thermal energy, storing it as latent heat. However, continuous photo-thermal conversion can cause the PCMs to reach high thermal equilibrium temperatures after phase transition. In our study, a novel light-driven phase change material system with temperature-control properties was constructed using a thermochromic compound. Thermochromic phase change materials (TC-PCMs) were prepared by introducing 2-anilino-6-dibutylamino-3-methylfluoran (ODB-2) and bisphenol A (BPA) into 1-hexadecanol (1-HD) in various proportions. Photo-thermal conversion performance was investigated with solar radiation (low power of 0.09 W/cm) and a xenon lamp (at a high power of 0.14 W/cm). The TC-PCMs showed a low equilibrium temperature due to variations in absorbance. Specifically, the temperature of TC-PCM (ODB-2, bisphenol A and 1-HD ratio 1:2:180) could stabilize at 54 °C approximately. TC-PCMs exhibited reversibility and repeatability after 20 irradiation and cooling cycles.
光驱动相变材料（PCM）由于能够将可见光转换为热能，并将其作为潜热储存而受到广泛关注。然而，连续的光热转换可能会导致 PCM 在相变后达到较高的热平衡温度。在我们的研究中，使用热致变色化合物构建了一种具有温度控制性能的新型光驱动相变材料体系。通过将 2-苯胺基-6-二丁基氨基-3-甲基荧光酮（ODB-2）和双酚 A（BPA）以不同比例引入 1-十六醇（1-HD）中，制备了热致变色相变材料（TC-PCM）。利用太阳辐射（低功率 0.09 W/cm）和氙灯（高功率 0.14 W/cm）研究了光热转换性能。TC-PCM 的吸光度变化使其具有较低的平衡温度。具体而言，TC-PCM（ODB-2、双酚 A 和 1-HD 比例为 1:2:180）的温度可稳定在约 54°C。TC-PCM 经过 20 次辐照和冷却循环后表现出可逆性和可重复性。
