【摘 要】
：
Three carbazole derivatives, AcPTC, PxPTC and PtPTC, consisting of two 9,9-dimethyl-9,10-dihydroacridine, phenoxazine or phenothiazine donor groups and one diphenyltriazine acceptor group fixed at 1,8,9-positions of a single carbazole ring via phenylene,
【机 构】
：
State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chine
论文部分内容阅读
Three carbazole derivatives, AcPTC, PxPTC and PtPTC, consisting of two 9,9-dimethyl-9,10-dihydroacridine, phenoxazine or phenothiazine donor groups and one diphenyltriazine acceptor group fixed at 1,8,9-positions of a single carbazole ring via phenylene, are designed and synthesized. X-ray diffraction anal-ysis of AcPTC reveals that there exist multipleπ -π interactions between the donor and acceptor groups to form a sandwich-like structural unit with edge-to-face interaction model. The compounds thus show obvious thermally activated delayed fluorescence with through-space charge transfer character and pos-sess considerable photoluminescence quantum yields of up to 73％ in doped films with sky-blue to yel-low emissions. The solution-processed electroluminescent devices achieve the highest maximum external quantum efficiencies of 10.0％, 11％ and 5.6％ for AcPTC, PxPTC and PtPTC, respectively, with small effi-ciency roll-offs.
其他文献
As a worldwide public health issue, chronic kidney disease still lacks of effective therapeutic approaches due to the challenges in conventional organ transplantation and dialysis. Renal tissue engineering of-fers an advantageous therapeutic or regenerati
随着科学技术的发展,人民生活水平不断提高,日常生活中涉及的电子设备越来越多,电子设备的电源部分为其工作提供能量.其中,电源的设计尤为重要,电源设计的优越性可以提高设备抗干扰能力和保证电子设备的使用寿命,同时在使用过程中还需注意一些问题.
The replacement of the disulfide bridge of CPI-1, a peptide inhibitor of light chain of Botulinum toxin serotype A, with the thioether-containing and biscarba-containing diaminodiacid bridge leads to a significant decrease in the degradation by trypsin an
Herein, a facile synthesis of valuable pyrido[1,2-a]pyrimidine-4-thiones is reported via novel thiocarbony-lation of C(sp3)-H bonds with carbon disulfide (CS2). This reaction features easy availability of substrates, good functional group tolerance, high
结合高层建筑物的结构和火灾发生时的实际情况,本文研究了高层建筑物火灾事故的主要特点,并且提出了高层建筑物火灾事故的防范措施以及可以采用的灭火救援技术、战术,期望可以实现最大限度地降低事故损失的目的.
现代化社会发展趋势下,我国社会经济爆发式增长与国民生活水平跨越式的变革,催化了社会对电力的需求不断增加,促使电力工业面临更加前所未有的改革需求及创新需求.为适应社会发展需要,电气工程应在保持现有技术水平的同时进一步提高其自动化技术水平.计算机控制系统是我国电气工程及自动化系统中的重要组成部分,同时也是促进我国电气工程节能、控制等系统全面优化的核心因素.本文以计算机控制系统在电气工程及自动化中的应用为讨论方向,首先详尽阐释我国电气工程及自动化重要性及价值性;其次,分析了现阶段我国电气工程及自动化现状及存在的
为缓解离港航班延误现状,减少航班延误带来的损失,研究了离港航班优化调度问题.建立了最小化航班延误成本、最小化航班位移量和最小化机位占用时间的多目标优化模型,将遗传算法与滑动时间窗相结合对模型进行求解,仿真结果表明,与先到先服务(FCFS)相比,航班延误损失减少35.5％,且延误损失在各航班之间的分配更加均衡,可见所提优化方法取得了较好的效果,能有效提高航班正常性,均衡延误损失,减少系统总体延误代价.
Remote ether groups could be used as directing groups to prepare fully substituted 5-ether-1,2,3-triazoles with exclusive 1,5-regioselectivities and excellent chemoselectivities. Ether group could coordinate with iridium catalyst by lone-pair electron at
随着社会的不断进步,越来越多的弱势群体进入人们的视野,其中就包含盲人群体.随着天气和季节的改变,盲人难以选择适宜的衣物出行.本文提出了一种基于STM32单片机的辅助盲人日常出行所需衣服搭配的衣架,方案包括传感器硬件电路设计和单片机软件设计两部分.本文的设计可以通过检测室外温度与天气,自动辅助盲人搭配日常出行所需的衣物,便利盲人的生活.
文章基于结构嵌套网格对旋翼、机身进行流场数值模拟研究.流场区域被分为多个相互嵌套的子区域,即背景网格和部件网格,各重叠区域通过插值传递流场信息.流动控制方程采用非定常Euler方程,空间离散采用Jameson有限体积法,时间推进采用双时间步长法.通过对旋翼、机身进行数值模拟,将计算结果与试验结果对比,吻合较好,表明本文方法得到的结果是准确可信的.