Results 131 to 140 of about 16,397 (260)

Easy orientation of diblock copolymers on self-assembled monolayers using UV irradiation

, 2009
A simple method based on UV/ozone treatment is proposed to control the surface energy of dense grafted silane layers for orientating block copolymer mesophases. Our method allows one to tune the surface energy down to a fraction of a mN/m.
Jean Daillant, Pang-Hung Liu, Pascal Thébault, Patrick Guenoun   +3 more
core   +1 more source

Hole‐Selective Self‐Assembled Monolayers Overlaid on NiOx or PEDOT:PSS for Tin‐Based Perovskite Solar Cells – An Overview of Recent Characterization Methods

Chemistry – A European Journal, EarlyView.
Successfully applying self‐assembled monolayers with hole‐selectivity for lead‐free tin perovskite solar cells requires judicious investigation with appropriately powerful characterization methods, in addition to efforts in the development of new materials and processing.
Donghoon Song, Seung Wook Shin, Hui‐Ping Wu, Eric Wei‐Guang Diau   +3 more
wiley   +1 more source

Inductive effects in molecular contacts enable wide-bandgap perovskite cells for efficient perovskite/TOPCon tandems

Nature Communications
Organic molecules that serve as hole-selective contacts, known as self-assembled monolayers (SAMs), play a pivotal role in ensuring high-performance perovskite photovoltaics.
Yixin Luo, Yuan Tian, Ke Zhao, Weiping Mao, Chen Liu, Jiahui Shen, Zhendong Cheng, Caner Değer, Xiaohe Miao, Zhongwei Zhang, Xuechun Sun, Libing Yao, Xu Zhang, Pengju Shi, Donger Jin, Jiaxiao Deng, Mengyuan Tian, Ilhan Yavuz, Na Dong, Ruzhang Liu, Rui Wang, Deren Yang, Jingjing Xue   +22 more
doaj   +1 more source

Polydopamine‐Mediated Grafting of Cationic Polymer Brushes for Adsorption of Fluorinated Compounds

Chemistry – A European Journal, EarlyView.
We introduce a versatile approach to fabricate tunable charged interfaces by functionalizing stonewool fibers with a polydopamine (PDA)–quaternary amine coating via a grafting‐to method. The modified surfaces exhibit rapid, concentration‐dependent adsorption of anionic species driven by electrostatic interactions.
Agnes C. Morrissey, Federica Sbordone, Fred Pashley‐Johnson, Aaron S. Micallef, Bart van de Worp, Neomy Zaquen, Prasanna Egodawatta, Laura Delafresnaye, Lukas Michalek, Christopher Barner‐Kowollik   +9 more
wiley   +1 more source

Resolving a Nearly Two‐Centuries‐Old Mystery: On the Structural Chemistry and Physicochemical Properties of Compounds Associated With the Term Ammelide

Chemistry – A European Journal, EarlyView.
The crystal structure of ammelide, also known as melanuric acid, was solved almost 200 years after its discovery by Liebig. Moreover, three modifications of its 1:1 adduct with ammeline were structurally elucidated, consisting of layers with a honeycomb motif analogous to melamine cyanurate.
Thaddäus J. Koller, Kristian Witthaut, Reinhard M. Pritzl, Simon M. J. Endraß, Markus Rösch, Georg Krach, Nadine Lammer, Thomas M. Klapötke, Wolfgang Schnick   +8 more
wiley   +1 more source

Measuring Molecular Forces With Atomic Force Microscopy 1: Solvent Influence on Hydrophobic Interactions

Microscopy Research and Technique, EarlyView.
Atomic force microscopy enables precise evaluation of the magnitude and range of hydrophobic and van der Waals interactions. This primer presents a protocol for fluorocarbon functionalization of gold surfaces and examines how water: DMSO mixtures affect hydrophobic forces, with data interpreted through an extended van der Waals model.
Luis N. Ponce‐Gonzalez, José L. Toca‐Herrera   +1 more
wiley   +1 more source

Modification and Patterning of Thiolate‐Anchored Self‐Assembled Monolayers with UV Light

Advanced Materials Interfaces
Along with their ability to redefine the chemical and physical properties of surfaces and interfaces, self‐assembled monolayers (SAMs) may serve as versatile resists and templates for lithography, providing chemical, morphological, and biological ...
Michael Zharnikov, Andreas Terfort
doaj   +1 more source

Doping‐Free Polymer Nanoparticle Engineering of n‐Type Organic Mixed Ion–Electron Conductors for Enhancement‐Mode Organic Electrochemical Transistors

Macromolecular Rapid Communications, EarlyView.
We report a nanoparticle formulation strategy for the ladder polymer BBL that enables undoped enhancement‐mode OECTs. Controlled reprecipitation with DBSA yields stable nanoparticles, and spray‐coating forms dense, well‐connected films. The resulting devices exhibit strongly enhanced electrochemical response and transconductance, establishing a ...
Shunsuke Yamamoto, Katsumi Abe, Masaya Mitsuishi   +2 more
wiley   +1 more source

Recent Advances in Chemical Bath Deposition of Electron and Hole Transport Layers for Perovskite Solar Cells and Modules

Rare Metals, EarlyView.
ABSTRACT The development of high‐efficiency, stable, and scalable perovskite solar cells/perovskite solar modules (PSCs/PSMs) highly depends on the performance and cost‐effectiveness of functional layers such as electron transport layers (ETLs) and hole transport layers (HTLs).
Baochang Wang, Yuxin Shi, Jingting Yang, Yunsong Feng, Zhigang Li, Hanwen Zhu, Changqi Zhou, Liping Liu, Xuean Liu, Yajing Chang, Yang Jiang, Guoqing Tong   +11 more
wiley   +1 more source

Enhancing the Chemical Reactivity of Graphene through Substrate Engineering

Small, EarlyView.
This review highlights methods to enhance the reactivity of graphene through substrate engineering, focusing on strain and charge doping. Strains induced by nanoparticles, metal crystal orientations, or stretchable polymers increase the reactivity of graphene.
Jia Tu, Mingdi Yan
wiley   +1 more source