نتایج جستجو برای: dendrimer hybrid

تعداد نتایج: 193126  

Journal: :Journal of Nanomaterials 2022

Dendrimers are well-defined nanoparticles, which have far-reaching application in the field of chemistry. Many efforts been devoted to development dendrimer due thier unique structure and various properties broad application. It helps varieties purposes as a catalyst drug delivery design. The topological descriptor analyze structure–property relationship chemical compounds. In this paper, some ...

Journal: :Journal of the American Chemical Society 2003
Huifang Lang R Alan May Brianna L Iversen Bert D Chandler

In this contribution, we report the successful preparation of supported metal catalysts using dendrimer-encapsulated Pt nanoparticles as metal precursors. Polyamidoamine (PAMAM) dendrimers were first used to template and stabilize Pt nanoparticles prepared in solution. These dendrimer-encapsulated nanoparticles were then deposited onto a commercial high surface area silica support and thermally...

Journal: :Bioconjugate chemistry 2007
Xue-Qing Zhang Janjira Intra Aliasger K Salem

We report on the preparation and characterization of poly(D, L-lactide-co-glycolide) (PLGA) microparticles with surface-conjugated polyamidoamine (PAMAM) dendrimers of varying generations. The buffering capacity and zeta-potential of the PLGA PAMAM microparticles increased with increasing generation level of the PAMAM dendrimer conjugated. Conjugation of the PAMAM dendrimer to the surface of th...

Journal: :Advanced functional materials 2010
Hye Jung Han Rangaramanujam M Kannan Sunxi Wang Guangzhao Mao Juan Pedro Kusanovic Roberto Romero

Dendrimers, with their well-defined globular shape and a high density of functional groups, are ideal nanoscale materials for templating sensor surfaces. This work exploits dendrimers as a versatile platform for capturing biomarkers with improved sensitivity and specificity. Synthesis, characterization, fabrication, and functional validation of the dendrimer-based assay platform are described. ...

Journal: :Bioconjugate chemistry 2006
Sezen Gurdag Jayant Khandare Sarah Stapels Larry H Matherly Rangaramanujam M Kannan

Dendritic nanostructures can play a key role in drug delivery, due to the high density and variety of surface functional groups that can facilitate and modulate the delivery process. We have investigated the effect of dendrimer end-functionality on the activity of polyamido amine (PAMAM) dendrimer-methotrexate (MTX) conjugates in MTX-sensitive and MTX-resistant human acute lymphoblastoid leukem...

Journal: :Molecules 2016
Fermín Ramírez-Crescencio Alan E Enciso Mirza Hasan Viviana C P da Costa Onofrio Annunziata Rocío Redón Jeffery L Coffer Eric E Simanek

The synthesis and solubility behaviors of four generation five (G5) triazine dendrimers are studied. While the underivatized cationic dendrimer is soluble in water, the acetylated and propanoylated derivatives undergo coacervation in water upon increasing temperature. Occurring around room temperature, this behavior is related to a liquid-liquid phase transition with a lower critical solution t...

2011
Krishnamoorthy Karthikeyan Anish Babu Sang-Jae Kim Ramachandran Murugesan Kadarkaraithangam Jeyasubramanian

Photodynamic therapy (PDT) is a promising treatment methodology whereby diseased cells and tissues are destroyed by reactive oxygen species (ROS) by using a combination of light and photosensitizers (PS). The medical application of Rose Bengal (RB), photosensitizer with very good ROS generation capability, is limited due to its intrinsic toxicity and insufficient lipophilicity. In this report, ...

2009
Dominic A. Lenz Ronald Blaak Christos N. Likos

With the aid of Monte Carlo simulations we investigate the equilibrium behavior of amphiphilic dendrimers, isolated as well as in the vicinity of uncharged planar walls, whereby the coreand shell-monomers constituting the dendrimer interact differently among themselves and with the wall surface. Contrary to the dense-core-forming athermal dendrimers, amphiphilic dendrimers can exhibit the so-ca...

2008
Karthikeyan Pasupathy Nicholas W. Suek John L. Lyons Justin Ching Aaron Jones Qi Lu Monica H. Lamm Chun Ke

We report our single-molecule fluorescence microscopy and molecular dynamics simulation studies on the interaction of poly(amidoamine) dendrimer and squalane hydrocarbon in aqueous solution. Our spectrophotometry measurements indicate that this interaction increases with the pH of the solvent. Our simulations show that squalane resides primarily on the perimeter of the dendrimer at low to neutr...

Journal: :Molecules 2013
Séverine Fruchon Anne-Marie Caminade Claire Abadie Jean-Luc Davignon Jean-Marc Combette Cédric-Olivier Turrin Rémy Poupot

Over the last decade, different types of dendrimers have shown anti-inflammatory properties in their own right. In particular, we have shown that poly(phosphorhydrazone) (PPH) dendrimers are able to foster an efficient anti-inflammatory response in human monocytes and can resolve the main physiopathological features of chronic arthritis in mice at 1 mg/kg. Here we afford new insights into the t...

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