scholarly journals Construction of 2D nanoporous networks by coupling on-surface dynamic imine chemistry and dipole-stabilized self-assembly

2017 ◽  
Vol 53 (2) ◽  
pp. 428-431 ◽  
Author(s):  
Jie-Yu Yue ◽  
Marios Markoulides ◽  
Andrew C. Regan ◽  
Shu-Ying Li ◽  
Nikos Chronakis ◽  
...  
Keyword(s):  
Schiff Base ◽  
Self Assembly ◽  
Pyrolytic Graphite ◽  
Building Blocks ◽  
Highly Oriented Pyrolytic Graphite ◽  
Surface Dynamic

Double-walled nanoporous networks based on the Schiff base reaction of nonplanar tripodic building blocks and subsequent dipole-directed self-assembly were fabricated on highly oriented pyrolytic graphite (HOPG).

A Bottom-Up Approach to Solution-Processed, Atomically Precise Graphitic Cylinders on Surfaces

2018 ◽  
Author(s):  
Erik Leonhardt ◽  
Jeff M. Van Raden ◽  
David Miller ◽  
Lev N. Zakharov ◽  
Benjamin Aleman ◽  
...  
Keyword(s):  
Self Assembly ◽  
Carbon Nanostructures ◽  
Carbon Nanomaterials ◽  
Circle Packing ◽  
Pyrolytic Graphite ◽  
Building Blocks ◽  
Bottom Up ◽  
Casting Technique ◽  
New Class ◽  
Solution Casting Technique

Extended carbon nanostructures, such as carbon nanotubes (CNTs), exhibit remarkable properties but are difficult to synthesize uniformly. Herein, we present a new class of carbon nanomaterials constructed via the bottom-up self-assembly of cylindrical, atomically-precise small molecules. Guided by supramolecular design principles and circle packing theory, we have designed and synthesized a fluorinated nanohoop that, in the solid-state, self-assembles into nanotube-like arrays with channel diameters of precisely 1.63 nm. A mild solution-casting technique is then used to construct vertical “forests” of these arrays on a highly-ordered pyrolytic graphite (HOPG) surface through epitaxial growth. Furthermore, we show that a basic property of nanohoops, fluorescence, is readily transferred to the bulk phase, implying that the properties of these materials can be directly altered via precise functionalization of their nanohoop building blocks. The strategy presented is expected to have broader applications in the development of new graphitic nanomaterials with π-rich cavities reminiscent of CNTs.

Self-assembly of Ge clusters on highly oriented pyrolytic graphite surfaces

2014 ◽  
Vol 628 ◽  
pp. 82-85 ◽  
Author(s):  
Masayuki Shimonaka ◽  
Yoshiaki Nakamura ◽  
Jun Kikkawa ◽  
Akira Sakai
Keyword(s):  
Self Assembly ◽  
Pyrolytic Graphite ◽  
Highly Oriented Pyrolytic Graphite

A Bottom-Up Approach to Solution-Processed, Atomically Precise Graphitic Cylinders on Surfaces

2018 ◽  
Author(s):  
Erik Leonhardt ◽  
Jeff M. Van Raden ◽  
David Miller ◽  
Lev N. Zakharov ◽  
Benjamin Aleman ◽  
...  
Keyword(s):  
Self Assembly ◽  
Carbon Nanostructures ◽  
Carbon Nanomaterials ◽  
Circle Packing ◽  
Pyrolytic Graphite ◽  
Building Blocks ◽  
Bottom Up ◽  
Casting Technique ◽  
New Class ◽  
Solution Casting Technique

Extended carbon nanostructures, such as carbon nanotubes (CNTs), exhibit remarkable properties but are difficult to synthesize uniformly. Herein, we present a new class of carbon nanomaterials constructed via the bottom-up self-assembly of cylindrical, atomically-precise small molecules. Guided by supramolecular design principles and circle packing theory, we have designed and synthesized a fluorinated nanohoop that, in the solid-state, self-assembles into nanotube-like arrays with channel diameters of precisely 1.63 nm. A mild solution-casting technique is then used to construct vertical “forests” of these arrays on a highly-ordered pyrolytic graphite (HOPG) surface through epitaxial growth. Furthermore, we show that a basic property of nanohoops, fluorescence, is readily transferred to the bulk phase, implying that the properties of these materials can be directly altered via precise functionalization of their nanohoop building blocks. The strategy presented is expected to have broader applications in the development of new graphitic nanomaterials with π-rich cavities reminiscent of CNTs.

Side-functionalized two-dimensional polymers synthesized via on-surface Schiff-base coupling

2015 ◽  
Vol 51 (41) ◽  
pp. 8664-8667 ◽  
Author(s):  
Lirong Xu ◽  
Lili Cao ◽  
Zongxia Guo ◽  
Zeqi Zha ◽  
Shengbin Lei
Keyword(s):  
Schiff Base ◽  
Pyrolytic Graphite ◽  
Graphite Surface ◽  
Hydroxyl Group ◽  
Two Dimensional ◽  
Highly Oriented Pyrolytic Graphite ◽  
2D Polymer

An imine-based 2D polymer side-functionalized with o-hydroxyl group was designed and synthesized on a highly oriented pyrolytic graphite surface.

STM STUDY OF A SELF-ASSEMBLY BEHAVIOR OF PHTHALOCYANINE AND 1-BROMOHEXADECANE ON HIGHLY ORIENTED PYROLYTIC GRAPHITE

2006 ◽  
Vol 05 (06) ◽  
pp. 877-882
Author(s):  
WU YANG ◽  
WEILIAN LV ◽  
LILI BO ◽  
XIAOYAN HE ◽  
GANG NI ◽  
...  
Keyword(s):  
Self Assembly ◽  
Substrate Surface ◽  
Pyrolytic Graphite ◽  
Molar Ratio ◽  
Highly Oriented Pyrolytic Graphite ◽  
Molar Ratios ◽  
Molecular Features ◽  
Planar Molecules ◽  
Assembly Behavior ◽  
Stm Images

In this paper, we present the results of using alkane derivatives to assist in the adsorption of planar molecules by employing 1-bromohexadecane( C 16 Br ) and phthalocyanine (Pc) as examples. Their assembly behaviors have been well resolved on the observed STM images. The observations presented in this work demonstrate that single molecular arrays of Pc can be obtained with a template of C 16 Br on highly oriented pyrolytic graphite (HOPG) substrate surface to allow high-resolution STM studies. Binary mixtures of different molar ratios were also observed. By adjusting the molar ratio of Pc to C 16 Br to about 1:3–1:4, uniform assembly can become dominative on the surface. The resulting high stability and the well ordered assembly are attributed to the increased adsorption barrier of alkanes. This approach could be adapted to the studies of other molecules to observe molecular features and could be helpful in obtaining two-dimensional assemblies of monodispersed molecules, especially planar molecules.

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