Lehmann Matthias, Dechant Moritz, Weh Dominik, Freytag Emely
Institute of Organic Chemistry, University of Würzburg, Am Hubland, 97074, Würzburg, Germany.
Center for Nanosystems Chemistry, and Bavarian Polymer Institute, Theodor-Boveri-Weg 4, 97074, Würzburg, Germany.
Chempluschem. 2020 Aug;85(8):1934-1938. doi: 10.1002/cplu.202000540.
Liquid crystal (LC) shape-amphiphiles with a disc tethered to a fullerene have been intensely studied for the application in photovoltaics, and helical nanosegregation of C has been claimed around the π-stacking disks based on X-ray results. The most promising materials reported to date have been resynthesized and studied comprehensively by XRS, density measurements, modelling, and electron density reconstruction. In contrast to previous reports, the results indicate that metal phthalocyanine-fullerene mesogens pack in lamellar columnar phases with p2gm symmetry. Fullerenes assemble in layers and are flanked by phthalocyanine columns, thus explaining the balanced charge carrier mobility of electrons and holes. Such variable donor-acceptor structures are promising for organic electronic applications.
带有连接到富勒烯上的圆盘的液晶（LC）形状两亲物已被深入研究用于光伏应用，并且基于X射线结果声称在π堆积圆盘周围存在C的螺旋纳米聚集。迄今为止报道的最有前景的材料已通过X射线散射（XRS）、密度测量、建模和电子密度重建进行了重新合成和全面研究。与先前的报道相反，结果表明金属酞菁 - 富勒烯液晶元以具有p2gm对称性的层状柱状相堆积。富勒烯分层组装并由酞菁柱两侧包围，从而解释了电子和空穴平衡的电荷载流子迁移率。这种可变的供体 - 受体结构在有机电子应用中很有前景。
