Rational and Predictable Chemoselective Synthesis of Oligoamines via Buchwald–Hartwig Amination of (Hetero)Aryl Chlorides Employing Mor-DalPhos
作者:Bennett J. Tardiff、Robert McDonald、Michael J. Ferguson、Mark Stradiotto
DOI:10.1021/jo202358p
日期:2012.1.20
We report a diverse demonstration of synthetically useful chemoselectivity in the synthesis of di-, tri-, and tetraamines (62 examples) by use of Buchwald–Hartwig amination employing a single catalyst system ([Pd(cinnamyl)Cl]2/L1; L1 = N-(2-(di(1-adamantyl)phosphino)phenyl)morpholine, Mor-DalPhos). Competition reactions established the following relative preference of this catalyst system for amine
Oligoaniline-Functionalized terpyridine ligands and their ruthenium(II) complexes: synthesis, spectroscopic property and redox behavior
作者:Dongfang Qiu、Yanxiang Cheng、Lixiang Wang
DOI:10.1039/b820392j
日期:——
fragments of ligands strongly shift to lower energy, and the metal-to-ligand charge-transfer transition (1MLCT) bands of all obtained complexes are considerably red-shifted (Δλmax = 22–64 nm) and their intensities become much more intense (approximately 4–6 times), compared with those of the reported complex [Ru(TPY)2]2+. Moreover, the spectroscopic properties of the ligands and complexes with longer
一系列低聚苯胺官能化的单和双主题 特吡啶配体,即C 6 H 5 [N(R)C 6 H 4 ] n TPY(R =H, 丁基, 叔丁氧羰基; n = 1-4;TPY = 2,2':6′,2″-三吡啶基)和TPYC 6 H 4 [N(R)C 6 H 4 ] m TPY(R =H, 叔丁氧羰基; m = 2,4),以及相应的单核和双核钌(II)配合物已经合成和验证。光谱结果表明,两种π-π*跃迁从TPY和配体的低聚苯胺片段强烈转移到较低能量,并且金属到配体的电荷转移过渡(1所有获得的络合物的MLCT)频带相当红移(Δ λ最大= 22-64纳米),它们的强度变得与报道的复合物相比,强度要高得多(大约4至6倍)[Ru(TPY)2 ] 2+。此外,更长的寡苯胺单元(n = 3,4)的配体和配合物的光谱性质受到外部刺激的显着影响,例如氧化作用 和 质子酸掺杂。可见光和近红外(NIR)标度中的特征吸收带证
作者:Saika Izumi、Heather F. Higginbotham、Aleksandra Nyga、Patrycja Stachelek、Norimitsu Tohnai、Piotr de Silva、Przemyslaw Data、Youhei Takeda、Satoshi Minakata
DOI:10.1021/jacs.9b11578
日期:2020.1.22
D-A-repeating structure, including more efficient thermallyactivateddelayedfluorescence (TADF). Furthermore, an organic light-emitting diode (OLED) device fabricated with the macrocycle compound as the emitter has achieved a high external quantum efficiency (EQE) up to 11.6%, far exceeding the theoretical maximum (5%) of conventional fluorescent emitters and that with linear analog (6.9%).
一类新的热激活延迟荧光供体-受体-供体-受体 (DADA) π-共轭大环由两个 U 形电子受体(二苯并[a,j]吩嗪)和两个电子供体(N,N' -diphenyl-p-phenyelendiamine) 已被合理设计并成功合成。大环化合物显示出依赖于多晶型的构象和发射特性。具有线性替代物的大环物理化学性质的比较研究揭示了 DA 重复结构的结构环化的显着影响,包括更有效的热激活延迟荧光 (TADF)。此外,以大环化合物作为发射体制造的有机发光二极管 (OLED) 器件实现了高达 11.6% 的高外量子效率 (EQE),
Self-Assembly of a Functional Oligo(Aniline)-Based Amphiphile into Helical Conductive Nanowires
作者:O. Alexander Bell、Guanglu Wu、Johannes S. Haataja、Felicitas Brömmel、Natalie Fey、Annela M. Seddon、Robert L. Harniman、Robert M. Richardson、Olli Ikkala、Xi Zhang、Charl F. J. Faul
DOI:10.1021/jacs.5b06892
日期:2015.11.18
A tetra(aniline)-based cationic amphiphile, TANI-NHC(O)C5H10N(CH3)3+Br– (TANI-PTAB) was synthesized, and its emeraldine base (EB) state was found to self-assemble into nanowires in aqueous solution. The observed self-assembly is described by an isodesmic model, as shown by temperature-dependent UV–vis investigations. Linear dichroism (LD) studies, combined with computational modeling using time-dependent