合成了具有对三联苯骨架的类席夫碱配体H 2 L TerPh并分两步将其转化为八面体铁 (II) 配位聚合物,其中 1,2-双-(4-吡啶基)-乙烯作为桥连配体。自由配体和两个八面体铁 (II) 配合物的单晶 X 射线结构分析是可能的。席夫碱样配体的金属中心具有 [ N 2 O 2 ] 2-配位球,对三联苯骨架引入了内在空间约束。用N 4 O 2表征配位聚合物通过磁性测量 (SQUID) 和室温穆斯堡尔光谱分析铁中心周围的配位球,揭示了研究的整个温度范围内的 H2S 特征。使用 DFT 计算的结构建模支持这些发现,但也支持解决方案中自旋交叉的可能性。
HIGHLY-FLUORESCENT AND PHOTO-STABLE CHROMOPHORES FOR ENHANCED SOLAR HARVESTING EFFICIENCY
申请人:NITTO DENKO CORPORATION
公开号:US20130074927A1
公开(公告)日:2013-03-28
The invention provides highly fluorescent materials comprising a single (n=0) or a series (n=1, 2, etc.) of benzo heterocyclic systems. The photo-stable highly luminescent chromophores are useful in various applications, including in wavelength conversion films. Wavelength conversion films have the potential to significantly enhance the solar harvesting efficiency of photovoltaic or solar cell devices.
Structural Design Principle of Small-Molecule Organic Semiconductors for Metal-Free, Visible-Light-Promoted Photocatalysis
作者:Lei Wang、Wei Huang、Run Li、Dominik Gehrig、Paul W. M. Blom、Katharina Landfester、Kai A. I. Zhang
DOI:10.1002/anie.201603789
日期:2016.8.8
on the structural design principle of small‐molecule organic semiconductors as metal‐free, pure organic and visiblelight‐active photocatalysts. Two series of electron‐donor and acceptor‐type organic semiconductor molecules were synthesized to meet crucial requirements, such as 1) absorption range in the visible region, 2) sufficient photoredox potential, and 3) long lifetime of photogenerated excitons
A PMMA-based heterogeneous photocatalyst for visible light-promoted [4 + 2] cycloaddition
作者:Niklas Huber、Run Li、Calum T. J. Ferguson、Dominik W. Gehrig、Charusheela Ramanan、Paul W. M. Blom、Katharina Landfester、Kai A. I. Zhang
DOI:10.1039/d0cy00016g
日期:——
Macromolecular organic photocatalysts consisting of a completely conjugated network have broad and promising applications in visible light-promoted photoredox catalysis. Precise reproduction and control of exact conjugation length remains an important challenge for fully conjugated and macromolecular photocatalysts. Here, we introduce a new photocatalytic material based on classical PMMA copolymerised
Photocatalytic Selective Bromination of Electron-Rich Aromatic Compounds Using Microporous Organic Polymers with Visible Light
作者:Run Li、Zi Jun Wang、Lei Wang、Beatriz Chiyin Ma、Saman Ghasimi、Hao Lu、Katharina Landfester、Kai. A. I. Zhang
DOI:10.1021/acscatal.5b02490
日期:2016.2.5
photocatalysts for a visible-light-promoted, highly selective bromination reaction of electron-rich aromaticcompounds using HBr as a bromine source and molecular oxygen as a clean oxidant. Via a simple Friedel–Crafts alkylation reaction, the microporous organic polymers were obtained by cross-linking of organic semiconductor compounds with defined valence and conduction band positions. The utilization
Recently, oxygen-equilibrated water solutions of Kolliphor EL, a well-known surfactant, have been seen to form nanomicelles with oxygen-free cores. This has prompted the successful testing of the core environment as a green medium for palladium-catalyzed Suzuki–Miyaura cross couplings. The versatility of these conditions is endorsed by several examples, including the synthesis of relevant molecular