摘要：Thermally activated delayed fluorescence(TADF)molecules have outstanding potential for applications in organic light-emitting diodes(OLEDs).Due to the lack of systematic studies on the correlation between molecular structure and luminescence properties,TADF molecules are far from meeting the needs of practical applications in terms of variety and *** this paper,three twisted TADF molecules are studied and their photophysical properties are theoretically predicted based on the thermal vibrational correlation function method combined with multiscale *** results show that all the molecules exhibit fast reverse intersystem crossing(RISC)rates(kRISC),predicting their TADF luminescence *** addition,the binding of DHPAzSi as the donor unit with different acceptors can change the dihedral angle between the ground and excited states,and the planarity of the acceptors is positively correlated with the reorganization energy,a property that has a strong influence on the non-radiative ***,a decrease in the energy of the molecular charge transfer state and an increase in the kRISC were observed in the *** study not only provides a reliable explanation for the observed experimental results,but also offers valuable insights that can guide the design of future TADF molecules.

摘要：为简化已有任意简单多边形求交算法并提高算法效率,首先将交点分类并排序,然后采用不同的遍历方法得到多边形的交集、并集和差集,在该算法的基础上设计带孔洞多边形的求交算法.所有算法均被实现,且复杂度较低,鲁棒性较好.

摘要：体型特征参数是了解不同生长阶段猪的生长发育情况,开展猪的育种和养猪设施、设备等工程配套技术研究的重要参考参数。选取4个不同生长阶段长白猪的6个体型特征参数进行了主成分分析,结果表明:不同阶段长白猪各体型特征参数之间均呈现显著的正相关(P<0.01),其中以胸围与体重的相关性最为明显。不同日龄猪的主成分因子有所不同,1日龄的第一主成分为长度因子,第二主成分为高度因子;28日龄、70日龄和150日龄的第一主成分为宽度因子,第二主成分为长度因子;1日龄和70日龄的第三主成分为长度因子,28日龄和150日龄的为高度因子。不同生长阶段长白猪在长、宽、高方向的生长速率存在一定差异。