98%
921
2 minutes
20
Abstract: Crosslinked colloidal monolayers are promising as templates, lithographic masks, filtration membranes, or membranes for controlled release rates in drug delivery. We demonstrate assembly of monodisperse micron-sized polystyrene (PS) beads at an air/water interface, which are transformed into crystalline monolayers using addition of surface-active agents. Vapor annealing methods with solvents (toluene and xylene) and crosslinking agents (divinylbenzene) were investigated regarding their ability to crosslink these floating monolayers directly at the interface, generating crosslinked membranes with crystal size up to 44 cm, domain size up to 1.9 mm, and nano-sized pores (100-300 nm). The demonstrated fabrication method emphasizes short fabrication time using a simple setup.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5504139 | PMC |
http://dx.doi.org/10.1007/s00706-017-1997-6 | DOI Listing |
J Colloid Interface Sci
September 2025
Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany. Electronic address:
Glycolipids are key structural and functional components of biological membranes, yet their interfacial hydration behavior remains poorly understood. Here, we use vibrational heterodyne-detected sum-frequency generation (HD-SFG) spectroscopy to probe the molecular structure of the air-water interface formed by monolayers of ohmline, a glycolipid bearing a lactose headgroup and carrying no formal charge. Upon electrolyte addition, we observe a striking reorientation of interfacial water and a reversal of the HD-SFG signal, indicative of apparent surface charging by an otherwise neutral headgroup.
View Article and Find Full Text PDFJ Colloid Interface Sci
September 2025
State Key Laboratory of Mechanics and Control of Mechanical Structures, Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, PR China; College of Aerospace Engineering, Nanjing University of Aerona
Ion adsorption at the solid-liquid interface of two-dimensional (2D) materials is ubiquitous and plays a pivotal role in interfacial physicochemical interactions. In practical applications, 2D materials are typically supported on solid substrates. Understanding the role of the supporting substrate is therefore critical for advancing our fundamental knowledge of interfacial interactions and downstream application success.
View Article and Find Full Text PDFJ Colloid Interface Sci
September 2025
Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University, Wuhan 430062, PR China. Electronic address:
Effective removal of ethylene (CH) during fruit and vegetables storage and transport remains a critical challenge for post-harvest preservation. Although S-scheme heterojunctions can improve charge separation and redox capacity for ethylene degradation, their efficiency is still restricted by limited carrier transfer and sluggish oxygen activation. Here, we rationally designed a novel 2D/2D SnNbO/BiMoO monolayer S-scheme heterojunction integrated with Pt co-catalyst to address these limitations.
View Article and Find Full Text PDFLangmuir
September 2025
Federal University of São Paulo, Laboratory of Hybrid Materials, Diadema, São Paulo 09913-030, Brazil.
This study demonstrates the successful fabrication of nanostructured Langmuir-Blodgett (LB) films combining the conjugated copolymer poly(9,9-dioctylfluorene--3,4-ethylenedioxythiophene) (PDOF--PEDOT) with spherical and triangular silver nanoparticles (AgNP). The LB technique allowed precise control over the molecular arrangement and distribution of the nanoparticles at the air-water interface, resulting in compact, reproducible and structurally ordered nanocomposite films. The structural and morphological properties of the interfacial monolayers and LB films were investigated using surface pressure-area isotherms, Brewster angle microscopy, polarization modulation infrared reflection-absorption spectroscopy (PM-IRRAS) and quartz crystal microbalance.
View Article and Find Full Text PDFAdv Colloid Interface Sci
August 2025
Cracow University of Technology, Faculty of Chemical Engineering and Technology, Department of Biotechnology and Physical Chemistry, Warszawska 24, 31-155 Cracow, Poland; Photo4Chem, Lea 114, 30-133 Cracow, Poland; Photo HiTech Ltd., Bobrzyskiego 14, 30-348 Cracow, Poland. Electronic address: joanna
Silatranization, a specialized variant of silanization using silatrane compounds, is emerging as a powerful strategy to functionalize material surfaces. Compared to conventional silane coupling agents, silatranes exhibit remarkable hydrolytic stability and enhanced resistance to self-condensation, enabling controllable, water-independent formation of a polysiloxane self-assembled monolayer. This review critically examines the unique structure of silatranyl cages, emphasizing how the intramolecular N->Si bond and chelate effect modulate the silicon center's reactivity toward hydroxyl-decorated surfaces.
View Article and Find Full Text PDF