Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/adma.200902601 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Grids designed for tomography: Stereovision transmission electron microscopy makes it easy to determine the winding handedness of helical nanocoils.
Micron
January 2025
Health and Medical Research Institute, Department of Life Science and Biotechnology, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central-6, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan. Electronic address:
Determining the handedness of helical nanocoils using transmission electron microscopy (TEM) has traditionally been challenging due to the deep depth of field and transmission nature of TEM, complementary techniques are considered necessary and have been practiced such as low angle rotary shadowing, scanning electron microscopy (SEM), or atomic force microscopy (AFM). These methods require customized sample preparation, making direct comparison difficult. Inspired by the need to identify the helical winding direction from TEM images alone, we developed a specialized tomography grid to capture stereo-pair images, enabling stereopsis.
View Article and Find Full Text PDFOn-Surface Synthesis of a Dicationic Diazahexabenzocoronene Derivative on the Au(111) Surface.
Angew Chem Int Ed Engl
November 2021
IMDEA Nanoscience, C/ Faraday 9, Campus de Cantoblanco, 28049, Madrid, Spain.
The atomically precise control over the size, shape and structure of nanographenes (NGs) or the introduction of heteroatom dopants into their sp -carbon lattice confer them valuable electronic, optical and magnetic properties. Herein, we report on the design and synthesis of a hexabenzocoronene derivative embedded with graphitic nitrogen in its honeycomb lattice, achieved via on-surface assisted cyclodehydrogenation on the Au(111) surface. Combined scanning tunnelling microscopy/spectroscopy and non-contact atomic force microscopy investigations unveil the chemical and electronic structures of the obtained dicationic NG.
View Article and Find Full Text PDFSelf-Assembled Two-Dimensional Nanoporous Crystals as Molecular Sieves: Molecular Dynamics Studies of 1,3,5-Tristyrilbenzene-C Superstructures.
J Chem Inf Model
April 2020
Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211, United States.
Due to their unique geometry complex, self-assembled nanoporous 2D molecular crystals offer a broad landscape of potential applications, ranging from adsorption and catalysis to optoelectronics, substrate processes, and future nanomachine applications. Here we report and discuss the results of extensive all-atom Molecular Dynamics (MD) investigations of self-assembled organic monolayers (SAOM) of interdigitated 1,3,5-tristyrilbenzene (TSB) molecules terminated by alkoxy peripheral chains C containing carbon atoms (TSB3,5-C) deposited onto highly ordered pyrolytic graphite (HOPG). structural and electronic properties of the TSB3,5-C molecules were initially determined using second order Møller-Plesset (MP2) calculations.
View Article and Find Full Text PDFHexabenzocoronene Graphitic Nanocoils Appended with Crown Ethers: Supramolecular Chirality Induced by Host-Guest Interaction.
Chemistry
December 2019
College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, P. R. China.
We have designed and synthesized two new achiral hexa-peri-hexabenzocoronene (HBC) derivatives, HBC and HBC , which bear the crown ether as the pendant for the amino acid binding site. The HBC self-assembled into a racemic mixture of P- and M-handed helical nanocoils, however, in the presence of chiral amino acid guests, it formed helical nanocoils with one-handed screw sense. The effects of the concentration, type and configuration of the guests on the induced circular dichroism (ICD) during the co-assembly of HBC with chiral amino acids were also investigated.
View Article and Find Full Text PDFHydrogen-Bonded Donor-Acceptor Arrays at the Solution-Graphite Interface.
Chemistry
August 2018
KU Leuven, Division of Molecular Imaging and Photonics, Department of Chemistry, Celestijnenlaan 200F, B-3001, Leuven, Belgium.
Controlling the nanoscale morphology of organic thin films represents a critical challenge in the fabrication of organic (opto)electronic devices. The morphology of the (multicomponent) thin films in turn depends on the mutual orientation of the molecular components and their supramolecular packing on the surface. Here, it is shown how the surface co-assembly of electron-donating and -accepting building blocks can be controlled via (supra)molecular design.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!