作者:Shengbin Lei、An Ver Heyen、Steven De Feyter、Mathieu Surin、Roberto Lazzaroni、Sabine Rosenfeldt、Matthias Ballauff、Peter Lindner、Dennis Mössinger、Sigurd Höger
DOI:10.1002/chem.200801939
日期:2009.3.2
Round and round: Covalently bound spokes induce an efficient template‐directed cyclization towards a rigid molecular wheel (see figure) and afford dramatically increased shape‐persistence properties compared with non‐strutted macrocycles.
Click Functionalization of a Dibenzocyclooctyne-Containing Conjugated Polyimine
作者:Vladimir Kardelis、Ryan C. Chadwick、Alex Adronov
DOI:10.1002/anie.201508639
日期:2016.1.18
quantitative modification of each repeat unit within the polymer backbone and the rapid synthesis of a conjugated polymer library with widely different substituents but a consistent degree of polymerization (DP). Kinetic studies show a second‐order reaction rate constant that is consistent with monomeric dibenzocyclooctynes. Grafting with azide‐terminated polystyrene and polyethylene glycol monomethyl ether
据报道,共轭聚(苯基-co-二苯并环辛炔)Schiff碱聚合物是通过将二苯并环辛炔双胺(DIBO-(NH 2)2)与双(十六烷氧基)苯基二醛缩聚而制备的。所得的聚合物具有高分子量(M n > 30 kDa,M w> 60 kDa),与一系列叠氮化物进行有效的应变促进炔烃-叠氮化物环加成反应。这使得能够对聚合物主链中的每个重复单元进行定量修饰,并能快速合成具有广泛不同取代基但聚合度(DP)一致的共轭聚合物库。动力学研究表明,二阶反应速率常数与单体二苯并环辛炔一致。用具有不同分子量的叠氮化物封端的聚苯乙烯和聚乙二醇单甲醚链进行接枝,可以有效合成一系列具有共轭主链和最大接枝密度的接枝共聚物。
Isothermal and non-isothermal cold crystallization of tetrabenzofluorene (TBF) molecules
作者:A. A. Boopathi、Srinivasan Sampath、T. Narasimhaswamy
DOI:10.1039/c8nj06514d
日期:——
Design and synthesis of tetrabenzo[a,c,g,i]fluorene (TBF) derivatives are carried out to investigate the isothermal and non-isothermal cold crystallization (CC) behavior by various spectroscopic and analytical techniques. The unprecedented CC exhibited by TBF molecules is examined by systematic modification of alkyl chain length (C8–C18 even carbons) on both sides of the central phenyl ring. The CC
设计并合成了四苯并[ a,c,g,i ]芴(TBF)衍生物,以通过各种光谱和分析技术研究等温和非等温冷结晶(CC)行为。通过系统性地修饰中心苯环两侧的烷基链长(C8–C18甚至碳原子),检查了TBF分子表现出的空前的CC。通过热阶段偏振显微镜(HOPM),差示扫描量热法(DSC)和可变温度粉末X射线衍射(VT-PXRD)检查TBF衍生物的CC 。实验观察表明,随着烷基链长度的增加,C 10 H 21到C 16 H 33时,CC温度和活化能显着提高。非等温CC活化能使用Kissinger方程计算。通过采用DSC动力学参数,可以计算出TBF分子(TBFC10至TBFC18)的总活化能,范围为62.18–90.35 kJ mol -1。此外,绘制了在五个不同温度下等温CC动力学的Avrami因子,这表明随着温度的升高,CC时间会减少。
Synthesis and Properties of Triphenodioxazine-Based Conjugated Polymers for Polymer Solar Cells
作者:Xiaohui Gong、Pei Han、Hui Wen、Ying Sun、Xueqin Zhang、Hong Yang、Baoping Lin
DOI:10.1002/ejoc.201700393
日期:2017.7.7
experimental data analysis and theoretical simulation. The polymers possess highly planar backbones, broad Vis/NIR absorptionbands, suitable frontier molecular orbital energies, and lowbandgaps ranging from 1.3 to 1.8 eV. The power conversion efficiencies of their photovoltaic devices are about 1 %. Introducing longer alkyl side chains into a polymer can bring about a better film-forming ability and improve
[EN] TRANSITION-METAL CHARGE-TRANSPORT MATERIALS, METHODS OF FABRICATION THEREOF, AND METHODS OF USE THEREOF<br/>[FR] MATERIAUX DE TRANSPORT DE CHARGE DE METAUX DE TRANSITION, LEURS PROCEDES DE FABRICATION ET D'UTILISATION