This study reports the effect of the crystallinity degree and structural order of the supramolecular architectures of the perylene derivative Paliogen® Black L0086 (P-black) on the near-infrared (NIR) transparent, reflective and cooling characteristics of 75 μm thick acrylic coatings. Notably, XRD and solid-state NMR investigations revealed that on passing from the commercially available P-black C to the synthetic form P-black S, the average crystallinity passed from 20 to 48% flanked by a superior structural order that enhanced the mean crystallite width from 21.7 to 39.1 nm and maximum length from 1.5 μm to 6.5 μm, as evidenced by SEM micrographs. UV-VIS-NIR spectroscopic analyses of the coated surfaces confirmed the NIR transparent and reflective characteristics of the P-black pigment that was particularly relevant in the case of the pigment synthetic form. NIR reflectance enhancements from 25% to 50% were actually recorded on black surfaces on passing from the commercial to the synthetic form of the pigment dispersed into the acrylic coatings. This feature was reflected on the solar reflectance and the cooling effect, with values boosted from 9.9% to 18.2% and from 2.3 °C to 3.8 °C, respectively.

这项研究报告了per衍生物Paliogen®Black L0086（P-black）的超分子结构的结晶度和结构顺序对75μm厚丙烯酸涂料的近红外（NIR）透明，反射和冷却特性的影响。值得注意的是，X射线衍射和固态NMR研究表明，从市售P-黑C转变为合成形式P-黑S时，平均结晶度从20％升至48％，其两侧是具有优越结构的结构，从而增强了平均晶体扫描电镜观察到的最大宽度为21.7至39.1 nm，最大长度为1.5μm至6.5μm。涂层表面的UV-VIS-NIR光谱分析证实了P-黑色颜料的NIR透明和反射特性，在颜料合成形式的情况下尤其重要。实际上，当从市售色散到合成形式的分散到丙烯酸涂料中的颜料转移到黑色表面时，NIR反射率实际上提高了25％至50％。此功能反映在太阳反射率和冷却效果上，其值分别从9.9％升高到18.2％，从2.3°C升高到3.8°C。