Propellers and Planes: Phosphorescent Pt
<sup>II</sup>
σ‐Acetylides from Polyaromatic Ligands
作者:Deanne Nolan、Belén Gil、Frances A. Murphy、Sylvia M. Draper
DOI:10.1002/ejic.201100424
日期:2011.7
low-energy bands of the UV/Vis absorptionspectra for the uncyclised family (L1, C1, T1) and for the cyclised family (L2, C2, T2) exhibit a redshift in the order trans > cis > ligand, indicating enhanced π-conjugation along the molecular axis in trans configuration. Each PtII complex is dual luminescent and possesses a high-energy ligand-centred fluorescence and a lower energy emission with significant phosphorescent
Structure-Property Relationships and<sup>1</sup>O<sub>2</sub>Photosensitisation in Sterically Encumbered Diimine Pt<sup>II</sup>Acetylide Complexes
作者:Deanne Nolan、Belén Gil、Longsheng Wang、Jianzhang Zhao、Sylvia M. Draper
DOI:10.1002/chem.201300759
日期:2013.11.11
A series of stericallyencumbered [Pt(L)(σ‐acetylide)2] complexes were prepared in which L, a dendritic polyaromatic diimine ligand, was held constant (L=1‐(2,2′‐bipyrid‐6‐yl)‐2,3,4,5‐tetrakis(4‐tert‐butylphenyl)benzene) and the cis ethynyl co‐ligands were varied. The optical properties of the complexes were tuned by changing the electronic character, extent of π conjugation and steric bulk of the
Luminescent Bis-Cyclometalated Gold(III) Complexes with Alkynyl Ligands of Hexaphenylbenzene and Hexabenzocoronene Derivatives and Their Supramolecular Assembly
bis‐cyclometalated gold(III) complexes with different nuclearities and various alkynyl ligands derived from hexaphenylbenzene (HPB) and hexabenzocoronene (HBC) have been synthesized. The energies of the low‐energy metal‐perturbed intraligand (IL) π–π*(R−C^N^C) absorptions of the HPB–alkynyl gold(III) complexes have been fine‐tuned by attaching various substituent groups to the bis‐cyclometalating ligands. Similarly
合成了一系列具有不同核数的发光双环金属化金(III)配合物,以及衍生自六苯基苯(HPB)和六苯并二氢呋喃(HBC)的各种炔基配体。通过将各种取代基连接到HPB-炔基金(III)络合物上的低能金属扰动内配体(IL)π-π*(RC-N ^ C)吸收能进行了微调。双环金属配体。同样,金属扰动的3配合物的IL [π→π*(RC ^ N ^ C)]发射显示出根据双环金属化配体的电子性质的能量转移。相反,在瞬态吸收研究的支持下,HBC-炔基金(III)络合物的吸收和发射光谱被确定为受HBC-炔基单元的IL跃迁支配。金(III)配合物的超分子组装形态已通过TEM和SEM进行了研究,并基于分子结构对不同配合物进行了比较,并通过浓度依赖性和1 H NMR光谱研究监测了其组装过程。
Carbon-rich “Click” 1,2,3-triazoles: hexaphenylbenzene and hexa-peri-hexabenzocoronene-based ligands for Suzuki–Miyaura catalysts
作者:James R. Wright、James D. Crowley、Nigel T. Lucas
DOI:10.1039/c6cc07413h
日期:——
Routes to polyaromatic 1,2,3-triazole ligands have been developed, their [PdCl2L2] complexes characterised and assessed as precatalysts in the Suzuki–Miyaura reaction.