150550-98-4Relevant academic research and scientific papers
Hydroformylation of olefins using redox-active rhodium(I) alpha-diimine-cored aryl ether metallodendrimers
Omosun, Nikechukwu N.,Ngubane, Siyabonga,Smith, Gregory S.
, (2021)
Rhodium(I) poly(aryl ether)-based, core-functionalised alpha-diimine metallodendrimers were investigated as catalyst precursors in the rhodium-catalysed hydroformylation of terminal olefins, 1-octene and styrene. The electronic environment across the meta
Morpholinyl dendrimer phthalocyanine: Synthesis, photophysical properties and photoinduced intramolecular electron transfer
Guo, Qiumei,Chen, Limin,Pan, Sujuan,Ma, Dongdong,Liu, Xiwen,Chen, Xiuqin,Xu, Guoxing,Yang, Hongqin,Peng, Yiru
, p. 13164 - 13170 (2018)
In this work, a novel series of morpholinyl dendrimer phthalocyanines were synthesized. Their structures were characterized by 1H NMR, IR, elemental analysis, ESI-MS as well as MALDI-TOF MS. The photophysical properties of these phthalocyanines were studied by UV/Vis and fluorescence spectroscopic methods. The photophysical properties of these dendrimer phthalocyanines exhibited dependence on the number of morpholinyl groups and the central ion. The photoinduced intramolecular electron transfer from the morpholinyl groups to the phthalocyanine ring was evidenced by the remarkably quenched fluorescence intensity and shortened lifetime of the silicon phthalocyanine. This difference in photoinduced intramolecular electron transfer effect for axially and peripherally substituted morpholinyl dendrimer phthalocyanines was also studied. Besides, introduction of morpholinyl groups on the dendrimer structure could enhance water solubility as well as increase the singlet oxygen quantum yield.
Vortex-induced alignment of a water soluble supramolecular nanofiber composed of an amphiphilic dendrimer
Yamamoto, Taiki,Tsuda, Akihiko
, p. 7071 - 7080 (2013/07/26)
We have synthesized a novel amphiphilic naphthalene imide bearing a cationic dendrimer wedge (NID). NID molecules in water self-assemble to form a two-dimensional ribbon, which further coils to give a linear supramolecular nanofiber. The sample solution s
Nonlinear optical compounds and related macrostructures
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Page/Page column 19, (2009/10/18)
Nonlinear optically active compounds, macrostructures that include nonlinear optically active components, and devices including the macrostructures. The nonlinear optically active compounds include dendrimers having two or more nonlinear optically active
Catalysis by titanocene-functionalized polymer-supported dendrimers
Berget, Patrick E.,Teixeira, Jacqueline M.,Jacobsen, John L.,Schore, Neil E.
, p. 8101 - 8103 (2008/03/13)
A series of variously-functionalized first-, second-, and third-generation dendrimers have been prepared and linked via a biphenyl core to a bis-styryl moiety suitable for use as a crosslinker in polymerization. Attachment of titanocene moieties to the first-generation system and copolymerization with styrene affords polymeric disks that exhibit catalytic properties superior to comparable solution-phase systems in a multicomponent coupling of chlorosilanes with Grignards to give bis-allylic silanes.
Synthesis of dendrimers with terminal formyl groups
Loim,Kelbyscheva
, p. 2080 - 2085 (2007/10/03)
A method for preparation of dendrons and dendrimers with formyl groups at the terminal aromatic rings, ether bonds in the branching blocks, and ester bonds in the core of the macromolecules is proposed. A way for the selective synthesis of p-hydroxymethylbenzaldehyde is described.
Unimolecular Micelles and Globular Amphiphiles: Dendritic Macromolecules as Novel Recyclable Solubilization Agents
Hawker, Craig J.,Wooley, Karen L.,Frechet, Jean M. J.
, p. 1287 - 1298 (2007/10/02)
The synthesis of dendritic polyether macromolecules based on a 3,5-dihydroxybenzyl alcohols building block and having carboxylate groups as chain-ends is described.These novel macromolecules behave as unimolecular micelles and their ability to solvate hydrophobic molecules has been investigated by UV-VIS spectroscopy.A dramatic increase in the saturation concentration of various polycyclic aromatic compounds in water was observed which was of a magnitude similar to that observed for micelles derived from sodium dodecyl sulfate.A relationship between the solubilizing power of the dendrimer and the electron density of the polycyclic aromatic was found.A linear relationship between the solubilizing ability and the concentration of the dendrimer, even at concentrations as low as 5 x 10-7 mol dm-3, indicates that these materials do not have a critical micelle concentration.Increases in the ionic strength of an aqueous solution of the dendrimer caused an increase in the saturation concentration of the hydrophobic molecules.A recyclable solubilization and extraction system is discussed.The synthesis of a globular dendritic macromolecular amphiphile designed to reside at the interface of an organic solvent and water is also described.This 'hybrid' dendritic amphiphile consisting of two distinct sectors, one hydrophilic and the other hydrophobic is prepared by stepwise alkylation of a core molecule, 4,4'-dihydroxybiphenyl with the two dissimilar dendritic fragments.
