Rapid Access to Dibenzohelicenes and their Functionalized Derivatives
作者:Andrej Jančařík、Jiří Rybáček、Kevin Cocq、Jana Vacek Chocholoušová、Jaroslav Vacek、Radek Pohl、Lucie Bednárová、Pavel Fiedler、Ivana Císařová、Irena G. Stará、Ivo Starý
DOI:10.1002/anie.201301739
日期:2013.9.16
Spiraling up: Easy access to dibenzo[5]‐, dibenzo[6]‐, and dibenzo[7]helicenes (see picture) as well as their functionalizedderivatives includes Sonogashira and Suzuki–Miyaura couplings, desilylation, and [2+2+2] alkyne cycloisomerization. The simplicity of this non‐photochemical approach combined with the potential for helicity control favors dibenzohelicenes over the parent helicenes for practical
Luminescent Platinum(II) Complexes with Bidentate Diacetylide Ligands: Structures, Photophysical Properties and Application Studies
作者:Zaoli Luo、Yungen Liu、Ka‐Chung Tong、Xiao‐Yong Chang、Wai‐Pong To、Chi‐Ming Che
DOI:10.1002/asia.202100756
日期:2021.10.4
A series of platinum(II) complexes supported by terphenyl diacetylide as well as diimine or bis-N-heterocyclic carbene (NHC) ligands have been prepared. The diacetylide ligands adopt a cis coordination mode featuring non-planar terphenyl moieties. Furthermore, the electrochemical, photophysical and photochemical properties of these platinum(II) complexes have been investigated.
已经制备了一系列由三联苯二乙炔以及二亚胺或双-N-杂环卡宾 (NHC) 配体负载的铂 (II) 配合物。二乙炔配体采用顺式配位模式,具有非平面的三联苯部分。此外,还研究了这些铂 (II) 配合物的电化学、光物理和光化学性质。
Adding Four Extra K-Regions to Hexa-<i>peri</i>-hexabenzocoronene
作者:Tim Dumslaff、Bo Yang、Ali Maghsoumi、Gangamallaiah Velpula、Kunal S. Mali、Chiara Castiglioni、Steven De Feyter、Matteo Tommasini、Akimitsu Narita、Xinliang Feng、Klaus Müllen
DOI:10.1021/jacs.6b01976
日期:2016.4.13
A multistep synthesis of hexa-peri-hexabenzocoronene (HBC) with four additional K-regions was developed through a precursor based on two benzotetraphene units bridged with p-phenylene, featuring preinstalled zigzag moieties. Characterization by laser desorption/ionization time-of-flight mass spectrometry, Raman and IR spectroscopy, and scanning tunneling microscopy unambiguously validated the successful
Dendritic metalloporphyrins with a distal H-bond donor as mimics of haemoglobinElectronic supplementary information (ESI) available: procedures for the synthesis of 1 and 5 and iron(ii) insertion into the dendritic porphyrins including full spectral characterisation and complete EPR characterisation of the complex 22·Co(dmim) and the corresponding oxygenated complex. See http://www.rsc.org/suppdata/ob/b2/b212468h/
We report the synthesis of iron(II) porphyrins functionalised with first- and second-generation dendrons as mimics of haemoglobin. The porphyrin core bears an ethynyl linker pointing towards the centre of the molecule, in an ideal position for the introduction of a series of distal ligands as potential H-bond donors by Pd0-catalysed Sonogashira cross-coupling.
Large-Cavity Coronoids with Different Inner and Outer Edge Structures
作者:Marco Di Giovannantonio、Xuelin Yao、Kristjan Eimre、José I. Urgel、Pascal Ruffieux、Carlo A. Pignedoli、Klaus Müllen、Roman Fasel、Akimitsu Narita
DOI:10.1021/jacs.0c05268
日期:2020.7.15
Coronoids, polycyclic aromatic hydrocarbons with geometrically defined cavities, are promising model structures of porous graphene. Here, we report the on-surface synthesis of C168 and C140 coronoids, referred to as [6]- and [5]coronoid, respectively, using 5,9-dibromo-14-phenylbenzo[m]tetraphene as the precursor. These coronoids entail large cavities (>1 nm) with inner zigzag edges, distinct from