Molecular compositions, materials, and methods for efficient multiple exciton generation
申请人:THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
公开号:US10636974B2
公开(公告)日:2020-04-28
Embodiments of the present invention provides compounds, compositions, and methods for their preparation that provide efficient intramolecular fission, such that local order and strong nearest neighbor coupling is no longer a design constraint. Inventive materials include organic oligomers and polymers designed to exhibit strong intrachain donor-acceptor interactions and provide intramolecular singlet fission, whereby triplet populations can be generated in very high yields of, e.g., 170% or more. The inventive disclosure is directed to polymers of the general formula: [SA-SD]n with a strong electron acceptor (SA), a strong electron donor (SD), and n a positive integer equal to or greater than two; methods for their preparation and monomers used therein, blends, mixtures and formulations containing them; the use of the polymers, blends, mixtures and formulations as semiconductors in organic electronic (OE) devices, especially in organic photovoltaic (OPV) devices, and to OE and OPV devices comprising these polymers, blends, mixtures or formulations.
本发明的实施方案提供了可提供高效分子内裂变的化合物、组合物及其制备方法,从而使局部有序和强近邻耦合不再是设计上的限制因素。本发明的材料包括有机低聚物和聚合物,其设计旨在表现出强链内供体-受体相互作用,并提供分子内单子裂变,从而以极高的产率(例如 170% 或更高)产生三重子群。本发明公开了通式聚合物:[SA-SD]n,其中有一个强电子受体(SA),一个强电子供体(SD),n 为等于或大于二的正整数;其制备方法和其中使用的单体,含有它们的共混物、混合物和制剂;这些聚合物、共混物、混合物和制剂在有机电子(OE)器件中作为半导体的用途,特别是在有机光伏(OPV)器件中的用途,以及包含这些聚合物、共混物、混合物或制剂的 OE 和 OPV 器件。