Two Dimensional Chiral Networks Emerging from the Aryl−F···H Hydrogen-Bond-Driven Self-Assembly of Partially Fluorinated Rigid Molecular Structures

2008 ◽  
Vol 130 (33) ◽  
pp. 10840-10841 ◽  
Author(s):  
Zhongcheng Mu ◽  
Lijin Shu ◽  
Harald Fuchs ◽  
Marcel Mayor ◽  
Lifeng Chi
Keyword(s):  
Hydrogen Bond ◽  
Self Assembly ◽  
Molecular Structures ◽  
Two Dimensional

MOLECULAR TEMPLATES FOR CONTROLLING AND ORDERING ORGANIC MOLECULES ON SOLID SURFACES

NANO ◽  
2012 ◽  
Vol 07 (01) ◽  
pp. 1230001 ◽  
Author(s):  
XU ZHANG ◽  
SHAN-SHAN LI ◽  
TING CHEN ◽  
DONG WANG ◽  
LI-JUN WAN
Keyword(s):  
Self Assembly ◽  
Organic Molecules ◽  
Molecular Engineering ◽  
Molecular Structures ◽  
Solid Surfaces ◽  
Scanning Tunneling ◽  
Two Dimensional ◽  
Tunneling Microscopy ◽  
Ordered Assembly ◽  
Template Design

Molecular templates are effective for inducing the formation of functional organic molecular structures on solid surfaces. Various surface nanopatterns as molecular templates were developed by self-assembly and molecular engineering. These molecular templates were used and led to the formation of ordered assembly of alien species into designed two-dimensional matrices targeting at future applications. Both molecular template and so-fabricated nanopatterned assembly were clearly observed by scanning tunneling microscopy (STM). This paper summarizes some recent results on molecular templates for controlling and ordering organic molecules on solid surfaces mainly from our group. Several typical molecular templates and the consequent nanofabrication of ordered assemblies are described, including template design and fabrication, molecule ordering and patterning with the template as well as the possible application of these systems.

Multiple C-H⋯anion and N-H⋯anion Hydrogen Bond Directed Two-Dimensional Crystalline Nanosheet with Precise Distance Control of Surface Charges for Enhanced Capture DNA

Soft Matter ◽  
2021 ◽  
Author(s):  
Laicheng Zhou ◽  
Ran He ◽  
Yang Qin ◽  
Yi-Lin Wu ◽  
Li Jiang ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Self Assembly ◽  
Two Dimensional ◽  
Surface Charges ◽  
Distance Control ◽  
Non Covalent Interactions ◽  
Covalent Interactions

Utilizing combined non-covalent interactions and introducing anions as structure-directing factors to build oriented self-assembly and 2D crystalline nanosheet superstructures with precise distance control of surface charges in competitive aqueous solvents...

TWO-DIMENSIONAL SELF-ASSEMBLY OF SUPRAMOLECULAR STRUCTURES

2000 ◽  
Vol 07 (05n06) ◽  
pp. 661-666 ◽  
Author(s):  
MATTHIAS BÖHRINGER ◽  
WOLF-DIETER SCHNEIDER ◽  
RICHARD BERNDT
Keyword(s):  
Self Assembly ◽  
Electrostatic Interactions ◽  
Gold Surface ◽  
Two Dimensions ◽  
Molecular Structures ◽  
The Self ◽  
Scanning Tunneling ◽  
Two Dimensional ◽  
Tunneling Microscopy ◽  
Chiral Phase

We briefly review recent low temperature scanning tunneling microscopy (STM) investigations performed in our laboratory1–5 on the self-assembly of the dipolar organic molecule 1-nitronaphthalene (NN) adsorbed on the reconstructed Au(111) surface. NN becomes chiral upon planar adsorption on the gold surface. We observe several coverage-driven structural transformations which are associated with simultaneous changes in the enantiomeric composition of the self-assembled molecular structures. At low coverages almost exclusively decamers with an 8:2 ratio of the enantiomers are formed. In a medium coverage range enantiopure one-dimensional molecular double chains prevail on the surface. Subsequently, molecules with opposite handedness are admixed until at monolayer coverage racemic one- and two-dimensional structures coexist. Modeling shows that hydrogen bonding causes the observed self-assembly. A subtle interplay between the electrostatic interactions among the molecules and their interaction with the reconstructed metal surface is the origin of the observed coverage-driven chiral phase transition in two dimensions.

scholarly journals Two-dimensional self-assemblies of telechelic organic compounds: structure and surface host–guest chemistry

2013 ◽  
Vol 371 (2000) ◽  
pp. 20120302 ◽  
Author(s):  
Hui-Juan Yan ◽  
Jia Liu ◽  
Dong Wang ◽  
Li-Jun Wan
Keyword(s):  
Hydrogen Bond ◽  
Self Assembly ◽  
Pyrolytic Graphite ◽  
Building Blocks ◽  
Carboxyl Groups ◽  
Two Dimensional ◽  
Guest Molecules ◽  
Surface And Interface ◽  
Trimesic Acid ◽  
Application Fields

Guiding the self-assembly of different types of functional molecules into well-defined structures on surfaces is beneficial for both fundamental surface and interface study and emerging application fields, especially molecular and organic electronics. This review focuses on understanding the two-dimensional self-assembly process of telechelic organics, which feature alkoxylene chains terminated with carboxyl groups. With the combined flexibility of alkyl chains and directionality of carboxyl groups, telechelic organics show unique assembly behaviour on two-dimensional surfaces. By increasing the length of the alkoxylene chains, the cavities in the nanoporous networks of telechelic trimesic acid (1,3,5-benzene tricarboxylic acid) derivatives change from hexagonal cavities to irregular cavities on a highly oriented pyrolytic graphite surface. The nanoporous networks provide a flexible host template for host–guest supramolecular chemistry because the cavities framed by the flexible alkoxylene chains can be changed in accordance with the sizes/shapes of the guest molecules. Furthermore, the terminal carboxylic group can form a hydrogen bond with another hydrogen bond partner, leading to multi-component structural motifs and hierarchical assemblies. The unique assembly behaviour of telechelic organics makes them promising structures as important building blocks for the design and construction of complex self-assembled nanoarchitectures.

Factors Affecting Molecular Self-Assembly and Its Mechanism

2012 ◽  
Vol 9 (1) ◽  
pp. 43 ◽  
Author(s):  
Hueyling Tan
Keyword(s):  
Self Assembly ◽  
Building Blocks ◽  
Molecular Engineering ◽  
Molecular Structures ◽  
Polymer Science ◽  
New Approach ◽  
Factors Affecting ◽  
Dna Structures ◽  
Self Assembling ◽  
Wide Range

Molecular self-assembly is ubiquitous in nature and has emerged as a new approach to produce new materials in chemistry, engineering, nanotechnology, polymer science and materials. Molecular self-assembly has been attracting increasing interest from the scientific community in recent years due to its importance in understanding biology and a variety of diseases at the molecular level. In the last few years, considerable advances have been made in the use ofpeptides as building blocks to produce biological materials for wide range of applications, including fabricating novel supra-molecular structures and scaffolding for tissue repair. The study ofbiological self-assembly systems represents a significant advancement in molecular engineering and is a rapidly growing scientific and engineering field that crosses the boundaries ofexisting disciplines. Many self-assembling systems are rangefrom bi- andtri-block copolymers to DNA structures as well as simple and complex proteins andpeptides. The ultimate goal is to harness molecular self-assembly such that design andcontrol ofbottom-up processes is achieved thereby enabling exploitation of structures developed at the meso- and macro-scopic scale for the purposes oflife and non-life science applications. Such aspirations can be achievedthrough understanding thefundamental principles behind the selforganisation and self-synthesis processes exhibited by biological systems.

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