نتایج جستجو برای: monodispersity

تعداد نتایج: 252  

2018
Chin-Fen Lee Hsueh-Wen Tseng Pratap Bahadur Li-Jen Chen

Mixed Pluronic micelles from very hydrophobic and very hydrophilic copolymers were selected to scrutinize the synergistic effect on the self-assembly process as well as the solubilization capacity of ibuprofen. The tendency of mixing behavior between parent copolymers was systematically examined from two perspectives: different block chain lengths at same hydrophilicity (L92 + F108, +F98, +F88,...

Journal: :Nanoscale 2017
Eisuke Yamamoto Seiya Mori Atsushi Shimojima Hiroaki Wada Kazuyuki Kuroda

Colloidal crystals composed of mesoporous silica nanoparticles (MSNs) are expected to have various applications because of their unique hierarchical structures and tunable functions. The expansion of the mesopore size is important for introducing guest species which cannot be accommodated by using conventional colloidal crystals of MSNs; however, the preparation of MSNs with a controllable pore...

Journal: :Analytical chemistry 1999
J F Hicks A C Templeton S Chen K M Sheran R Jasti R W Murray J Debord T G Schaaff R L Whetten

This report describes how the electrochemical double-layer capacitances of nanometer-sized alkanethiolate monolayer-protected Au clusters (MPCs) dissolved in electrolyte solution depend on the alkanethiolate chain length (C4 to C16). The double-layer capacitances of individual MPCs (C(CLU)) are sufficiently small (sub-attoFarad, aF) that their metal core potentials change by >0.1 V increments f...

Journal: :Physical chemistry chemical physics : PCCP 2013
Mostafa Farrag Martin Tschurl Amala Dass Ulrich Heiz

Through the discovery of ligand protected metal clusters with cores of a precise number of atoms, the exploration of the third dimension of the periodic table for fundamental research and also for applications has become less remote. So far, the exact number of metal atoms in the core has been determined unambiguously only using mass spectrometry and single crystal X-ray diffraction. Gold clust...

2017
Jiajie Bi Genrui Fan Suli Wu Xin Su Hongbo Xia Shu‐Fen Zhang

Herein, we developed a method to prepare monodisperse poly(styrene-co-maleic anhydride)@Ag (PSMA@Ag) core-shell microspheres with high surface charge intensity by using an in situ reduction method. In this method, ethylenediamine tetraacetic acid tetrasodium salt (Na4EDTA) was used as a reducing agent to promote the growth of Ag, and at the same time endowed the PSMA@Ag spheres with a surface c...

2011
So Young Yoo Woo-Jae Chung Tae Hyun Kim Mimi Le Seung-Wuk Lee

Fabrication of precisely designed active biomaterials is of great interest in many areas of bionanotechnology including regenerative medicine, drug screening, and biosensors. Microand nanometre scale defined patterns have been developed which can control the spacing and density of signaling molecules through top-down microfabrication approaches, such as photolithography, e-beam lithography, and...

Journal: :Journal of Drug Delivery Science and Technology 2022

Candida albicans infections have been particularly critical among nosocomial in immune-compromised and hospitalized patients. The interaction of microbes with various types nanoparticles is a crucial stage determining the biological consequences. present study aimed to synthesize evaluate nanomaterial-based vaccines using C. ghosts. silver (Ag-NPs) gold (Au-NPs) were environmentally prepared gr...

2016
Lu Shan Magali Colazet Kim L Rosenthal Xiang-Qing Yu Jared S Bee Andrew Ferguson Melissa M Damschroder Herren Wu William F Dall'Acqua Ping Tsui Vaheh Oganesyan

The immunoglobulin Fc region is a homodimer consisted of two sets of CH2 and CH3 domains and has been exploited to generate two-arm protein fusions with high expression yields, simplified purification processes and extended serum half-life. However, attempts to generate one-arm fusion proteins with monomeric Fc, with one set of CH2 and CH3 domains, are often plagued with challenges such as weak...

2016
Kathryn Regan Shea Ricketts Martin Kröger

Double-stranded DNA offers a robust platform for investigating fundamental questions regarding the dynamics of entangled polymer solutions. The exceptional monodispersity and multiple naturally occurring topologies of DNA, as well as a wide range of tunable lengths and concentrations that encompass the entanglement regime, enable direct testing of molecular-level entanglement theories and corre...

2013
Qinzhong Feng Yang Chen Diandou Xu Liyuan Liu Zhengjie Zhang

2,4,6-trichlorophenol molecularly imprinted suspension polymer has been prepared and applied to the molecularly imprinted micro-solid-phase extraction procedure for selective preconcentration of phenolic compounds from environmental water samples. The influence of functional monomer, cross-linker, polymerization condition, porogen, and the ratio of template molecule and functional monomer to cr...

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