Arash Badami‐Behjat, Tamara Rinkovec, Pavel Procházka, Anastasiia Bazylevska, Miriam C. RodríguezGonzález, Hai Cao, Jan Čechal, Steven De Feyter, Markus Lackinger
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引用次数: 0
摘要
在高温条件下,用于研究液固界面超分子单分子层自组装的原型有机溶剂会通过插层作用改变石墨基底。因此,结合强度较低的超分子单层在热力学上变得不稳定,这一点可以通过扫描隧道显微镜进行探测。通过原子力显微镜、共焦拉曼光谱和低能电子显微镜进行的补充表征一致表明,溶剂插层导致石墨基底顶部几层发生了次表面变化。900 °C 真空高温退火可恢复石墨基底的吸附特性,这表明去插层的活化能很高。然而,强吸附氢键的三羟甲基酸单层抑制了溶剂插层,从而保护了石墨基底。轻度溶剂插层石墨可能被证明是一种易于制备的石墨材料,具有进一步减弱的吸附特性。
Reversible Intercalation of Organic Solvents in Graphite and Its Hindrance by a Strongly Adsorbing Supramolecular Monolayer
At elevated temperatures, the prototypical organic solvents used to study the self‐assembly of supramolecular monolayers at liquid–solid interfaces alter a graphite substrate by intercalation. As a consequence, less strongly bound supramolecular monolayers become thermodynamically unstable, as probed by scanning tunneling microscopy. Complementary characterization by atomic force microscopy, confocal Raman spectroscopy and low energy electron microscopy consistently points to subsurface changes in the top few layers of the graphite substrate due to solvent intercalation. High‐temperature annealing at 900 °C in the vacuum restores the adsorption properties of the graphite substrates, indicating a high activation energy for deintercalation. However, strongly adsorbing hydrogen‐bonded monolayers of trimesic acid inhibit solvent intercalation and thus protect the graphite substrate. Mildly solvent‐intercalated graphite may prove useful as an easily prepared graphitic material with further weakened adsorption properties.
期刊介绍:
Advanced Materials Interfaces publishes top-level research on interface technologies and effects. Considering any interface formed between solids, liquids, and gases, the journal ensures an interdisciplinary blend of physics, chemistry, materials science, and life sciences. Advanced Materials Interfaces was launched in 2014 and received an Impact Factor of 4.834 in 2018.
The scope of Advanced Materials Interfaces is dedicated to interfaces and surfaces that play an essential role in virtually all materials and devices. Physics, chemistry, materials science and life sciences blend to encourage new, cross-pollinating ideas, which will drive forward our understanding of the processes at the interface.
Advanced Materials Interfaces covers all topics in interface-related research:
Oil / water separation,
Applications of nanostructured materials,
2D materials and heterostructures,
Surfaces and interfaces in organic electronic devices,
Catalysis and membranes,
Self-assembly and nanopatterned surfaces,
Composite and coating materials,
Biointerfaces for technical and medical applications.
Advanced Materials Interfaces provides a forum for topics on surface and interface science with a wide choice of formats: Reviews, Full Papers, and Communications, as well as Progress Reports and Research News.