Dorčák, Vlastimil Novák, David Kabeláč, Martin Kroutil, Ondřej Bednárová, Lucie Veverka, Václav Vacek, Jan
Published in
Langmuir : the ACS journal of surfaces and colloids
Molecular wires are functional molecules applicable in the field of transfer processes in technological and biochemical applications. Besides molecular wires with the ability to transfer electrons, research is currently focused on molecular wires with high proton affinity and proton transfer ability. Recently, proposed peptidic proton wires (H wire...
Huang, Junhao Liu, Xiaoyan Thormann, Esben
Published in
Langmuir : the ACS journal of surfaces and colloids
Atomic force microscopy (AFM) and quartz crystal microbalance with dissipation (QCM-D) were employed to investigate the pH dependent adsorption of poly(diallyl dimethyl ammonium chloride) (polyDADMAC) to silica surfaces as well as the surface forces between these layers. It was found that polyDADMAC adopted a relatively flat conformation when adsor...
Wu, Shiwei Liu, Yu Ma, Caiqing Wang, Jing Zhang, Yao Song, Peng Xia, Lixin
Published in
Langmuir : the ACS journal of surfaces and colloids
4-Aminothiophenol (PATP) and 4-aminophenyl disulfide (APDS) in contact with silver will form H2N-C6H4-S-Ag (PATP-Ag), and under the conditions of surface-enhanced Raman spectroscopy (SERS) a coupling reaction will generate 4,4-dimercaptoazobenzene (DMAB). DMAB is strongly Raman-active, showing strong peaks at 1140, 1390, and 1432 cm-1, and is wid...
Zhao, Bintao Yuan, Guangcui Chu, Xiao Yang, Jingfa Zhao, Jiang
Published in
Langmuir : the ACS journal of surfaces and colloids
Structure and dynamics inside permanently charged polyelectrolyte brushes, sodium polystyrene sulfonate brushes, during their response to the introduction of external ions (NaCl) are investigated by neutron reflectivity and dielectric spectroscopy. Neutron reflectivity measurements show that the segmental density of the inner part of the brushes de...
Li, Shuheng Mrksich, Milan
Published in
Langmuir : the ACS journal of surfaces and colloids
This paper reports a kinetic characterization of the interfacial reaction of N-methylpyrrolidine with a self-assembled monolayer presenting an iodoalkyl group. SAMDI (self-assembled monolayers for matrix-assisted laser desorption/ionization) mass spectrometry was used to determine the extent of reaction for monolayers that were treated with a range...
Emery, Travis S Raghupathi, Pruthvik A Kandlikar, Satish G
Published in
Langmuir : the ACS journal of surfaces and colloids
The passage of a single bubble or a stream of bubbles through a liquid-liquid interface is a highly dynamic process that can result in a number of different outcomes. Previous studies focused primarily on a single bubble and single flow regime, and very few investigations have considered bubble streams. In the present work, six different liquid com...
Scalfi, Laura Fraux, Guillaume Boutin, Anne Coudert, François-Xavier
Published in
Langmuir : the ACS journal of surfaces and colloids
We have studied the properties of water adsorbed inside nanotubes of hydrophilic imogolite, an aluminum silicate clay mineral, by means of molecular simulations. We used a classical force field to describe the water and the flexible imogolite nanotube and validated it against the data obtained from first-principles molecular dynamics. With it, we o...
Huang, Chi Wang, Jie Lv, Xiaobo Liu, Liu Liang, Ling Hu, Wei Luo, Changliang Wang, Fubing Yuan, Quan
Published in
Langmuir : the ACS journal of surfaces and colloids
The "coffee ring effect" is a natural phenomenon wherein sessile drops leave ring-shaped structures on the solid surfaces upon drying. It drives a nonuniform deposition of suspended compounds on the substrates, which adversely affects many processes, including surface-assisted biosensing and molecular self-assembly. In this study, we describe how t...
Maeta, Naoya Kamiya, Hidehiro Okada, Yohei
Published in
Langmuir : the ACS journal of surfaces and colloids
Design, control, and direct characterization of surface properties are prerequisites to all the practical applications of nanoparticles. Since stable and homogeneous colloidal conditions are required for most applications, the amenability of nanoparticles to in-solution processing must also be addressed. Herein, we demonstrate that solution 1H NMR ...
Ganeshan, Dhanavel Xie, Fengyan Sun, Qingqing Li, Yafeng Wei, Mingdeng
Published in
Langmuir : the ACS journal of surfaces and colloids
The plasmonic effects of silver (Ag) nanoparticles (NPs) with various morphologies (sphere, rod, and prism) embedded into the platinum (Pt) counter electrodes (CEs) of dye-sensitized solar cells (DSCs) were systematically investigated. It was shown that the power conversion efficiencies (PCEs) of the incorporated devices are notably improved from 7...
