Tuning the thermotropic properties of liquid crystalline p-substituted aroylhydrazones
作者:Hemant Kumar Singh、Sachin Kumar Singh、Rajib Nandi、Madan Kumar Singh、Vijay Kumar、Ranjan K. Singh、D. S. Shankar Rao、S. Krishna Prasad、Bachcha Singh
DOI:10.1039/c5ra06620d
日期:——
Lamellar smectic A to columnar mesophase crossover is observed in p-substituted aroylhydrazones by variation of the alkoxy chain density at peripherals.
通过改变周边烷氧链密度,在p-取代芳酰肼中观察到片层烟酸A到柱状介晶相的交叉。
Double-tailed long chain BODIPYs - Synthesis, characterization and preliminary studies on their use as lipid fluorescence probes
作者:Cláudia T. Arranja、António Aguiar、Telma Encarnação、Sofia M. Fonseca、Licínia L.G. Justino、Ricardo A.E. Castro、Andrew Benniston、Anthony Harriman、Hugh D. Burrows、Abilio J.F.N. Sobral
DOI:10.1016/j.molstruc.2017.05.119
日期:2017.10
Abstract In this paper we report the synthesis of a series of double-tailed BODIPYs bearing twin alkoxy groups with long linear alkyl side chains (C10, C12, C14, C16) attached to the meso positioned phenyl unit. The compounds were fully characterized and exhibited the typical BODIPY strong absorbance in the visible region and emission maxima around 530 nm, with high fluorescence quantum yields (ca
Substituent Site Effect Induced Assemblies of Porphyrin Derivatives on Graphite Surface Characterized Using a Scanning Probe Microscope
作者:Min Li、Haijun Xu、Yanlian Yang、Lina Zhao、Zhen Shen、Qingdao Zeng、Chen Wang
DOI:10.1246/cl.140687
日期:2014.11.5
The assembly behavior of both symmetrically substituted tetraphenylporphyrin (TPP) (sym-16OTPP, meso-tetra(3,5-dihexadecyloxyphenyl)) and asymmetrically substituted tetraphenylporphyrin (TPP) (asym-16OTPP, meso-tetra(3,4-dihexadecyloxyphenyl)) on a highly oriented pyrolytic graphite (HOPG) surface has been studied by a scanning probe microscope in this work. Scanning tunneling microscope results show that asym-16OTPP and sym-16OTPP form different arrangements on the graphite surface in a “face-on” manner due to different site substitution. The atomic force microscope detection further confirms the site effect on one-dimensional ordered assembling structures formed from sym- and asym-16OTPP on HOPG by adopting the “edge-on” mode.
Perfectly Straight Nanowires of Fullerenes Bearing Long Alkyl Chains on Graphite
作者:Takashi Nakanishi、Naoko Miyashita、Tsuyoshi Michinobu、Yutaka Wakayama、Tohru Tsuruoka、Katsuhiko Ariga、Dirk G. Kurth
DOI:10.1021/ja061450f
日期:2006.5.1
Fullerene derivatives bearing long alkyl chains epitaxially adsorb on the basal plane of graphite forming well-ordered one-dimensional lamellae. Within the lamellae, the C60 moieties are organized in a zigzag-type fashion. The ordering is mainly governed by the substitution pattern and chain length of the alkyl chains. The electrochemical activity of the C60 groups is fully maintained in the surface-confined assemblies.
PORPHYRIN DERIVATIVES, THEIR USE IN PHOTODYNAMIC THERAPY AND MEDICAL DEVICES CONTAINING THEM