Physicochemical characterization of octakis(alkyloxy)-substituted Zn(ii)-phthalocyanines non-covalently incorporated into an organogel and their remarkable morphological effect on the nanoscale-fibers
measurements and Mössbauer spectroscopy. Variation of the bridging ligand and the alkyl chain lengths allows fine tuning of the transition temperature in the range between 338 K and 357 K. Single crystal X-ray structure analysis of two coordination polymers and one of the starting complexes reveals the formation of a lipid layer-like arrangement of the amphiphilic complexes in all cases. Further characterization
具有N 2 O 2的铁(II)配位聚合物带有不同烷基链长度(C16,C18,C20和C22)和1,2-双(4-吡啶基)乙炔,1,2-双(4-吡啶基)乙烯或1,2的Schiff碱状赤道配体合成了作为桥联配体的-双(4-吡啶基)乙烷。所有复合物在室温以上均表现出相当相似的突然自旋转变,这可以通过磁测量和穆斯堡尔光谱法进行研究。桥接配体和烷基链长度的变化允许在338 K和357 K之间的范围内微调转变温度。两种配位聚合物和一种起始配合物的单晶X射线结构分析揭示了脂质的形成两性复合物的层状排列在所有情况下。通过热重分析,差示扫描量热法,X射线粉末衍射和偏振光学显微镜在所有情况下均显示出固-固相变。这些过渡决定了自旋交叉行为,并取决于由配体外周中的烷基链控制的晶体堆积。因此,对于所提出的系统,通过配体结构的微小改变来控制自旋交联性质。关于技术应用,旋涂被显示为适合于复合物的加工,因为薄膜并且此外可以
Hydrogen bond-driven columnar self-assembly of electroluminescent D–A–D configured cyanopyridones
作者:D. R. Vinayakumara、Hidayath Ulla、Sandeep Kumar、Anup Pandith、M. N. Satyanarayan、D. S. Shankar Rao、S. Krishna Prasad、Airody Vasudeva Adhikari
DOI:10.1039/c8tc01737a
日期:——
and electroluminescence characteristics have been investigated in detail. Here, the H-bonding interactions through a central lactam core were shown to be the key driving force for their self-assembly into columnar mesophases. The key role of H-bonding has been confirmed by using newly synthesized similar shaped compounds, MCP-1 to MCP-3. New CPO mesogens were found to be intense greenish blue light
Liquid crystalline properties of bis(salicylaldiminato)copper(II) complexes: the first columnar discotics derived from salicylaldimine Schiff bases
作者:Chung K. Lai、Chung-hsiung Chang、Chun-hsien Tsai
DOI:10.1039/a707091h
日期:——
The synthesis and mesomorphic properties of a homologous series ofN-(2-hydroxy-4-n-alkoxybenzylidene)-3′,4′-di-n-alkoxylanilines and their copper(ii) complexes bis[(N-3′,4′-dialkoxyphenyl)-4-n-alkoxylsalicylaldiminato]copper(ii) are reported. The disc-like copper complexes exhibited columnar hexagonal disordered mesophases, which were characterized by DSC analysis and optical polarized microscopy. The structure of the mesophases was confirmed by X-ray powder diffraction (XRD). The mesomorphic properties for these copper complexes were compared with other similar metallomesogenic bis(salicylaldiminato)copper(ii) complexes in terms of molecular structural differences.
New Octahedral, Head–Tail Iron(II) Complexes with Spin Crossover Properties
作者:Stephan Schlamp、Peter Thoma、Birgit Weber
DOI:10.1002/ejic.201101096
日期:2012.6
The synthesis and characterisation of four new Schiffbase-likeligands with long alkyl chains in the outer periphery and their iron(II) complexes with methanol and pyridine as axialligands is reported. Two of the methanol complexes crystallise in a lipid layer-like arrangement with the alkyl chain (tail) packed in the middle and the iron centres (head) in the outer sites. The pyridine complexes show
报道了四种新的类席夫碱配体的合成和表征,外周具有长烷基链,以及它们与甲醇和吡啶作为轴向配体的铁 (II) 配合物。两种甲醇复合物以脂质层状排列结晶,烷基链(尾部)位于中间,铁中心(头部)位于外部位点。吡啶配合物显示出不同类型的自旋转变(逐步、不完全、有滞后),这取决于配体外围的烷基链长度和取代基。使用 1 H NMR 光谱在溶液中的研究表明,自旋跃迁行为的差异是由于堆积效应,因为获得了与烷基链长度无关的相同跃迁曲线。
Influence of main chain on the phase behaviors of side-chain liquid-crystalline polymers with triphenylene mesogens of long alkyl tail substituents
A series of side‐chain liquid‐crystallinepolymers (SCLCPs) containing triphenylene mesogen, in which the long alkyl tail Tp connected directly with main chain, were synthesized successfully. The chemical structures of the monomers were confirmed by 1H NMR and mass spectrometry. The phasebehaviors of polymers were investigated by a combination of techniques, including DSC, POM, 1D/2D WAXD, and SAXS