Hydrogen bonded frameworks: smart materials used smartly

2021 ◽  
Author(s):  
Anna Yusov ◽  
Alexandra M. Dillon ◽  
Michael D. Ward
Keyword(s):  
Smart Materials ◽  
Building Blocks ◽  
Guest Molecules ◽  
Molecular Building Blocks ◽  
Wide Range ◽  
Key Technologies ◽  
Materials Used ◽  
Hydrogen Bonded

Hydrogen-bonded host frameworks constructed from carefully selected molecular building blocks can exhibit architectures capable of encapsulating a wide range of guest molecules, with promising opportunities in key technologies.

Molecular inorganic polymers: synthesis and crystal structures of KCl72H2SeO3 and CsCl7H2SeO3

2020 ◽  
Vol 235 (11) ◽  
pp. 553-557
Author(s):  
Mishel R. Markovski ◽  
Oleg I. Siidra ◽  
Dmitri O. Charkin ◽  
Evgeny V. Nazarchuk ◽  
Vasili Yu. Grishaev
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Bonds ◽  
Crystal Structures ◽  
Building Blocks ◽  
Inorganic Polymers ◽  
Selenious Acid ◽  
Molecular Building Blocks ◽  
Hydrogen Bonded

AbstractKCl72H2SeO3 and CsCl7H2SeO3 have been synthesized using solution evaporation methods from aqueous solution. Both compounds are monoclinic (P2/n and P21/c) and demonstrate new structure types. One symmetrically unique SeO(OH)2 molecule is present in each structure. SeO(OH)2 molecules via strong hydrogen bonds form chains in KCl72H2SeO3 and layers in ?sCl7H2SeO3. The structures of KCl72H2SeO3 and CsCl7H2SeO3 can be described as consisting of ionic KCl chains and CsCl layers incorporated into the covalent- and hydrogen-bonded H2SeO3 matrix. To the best of our knowledge, the cases when selenious acid acts as a contributor to the molecular building blocks of salt-inclusion structures are not known to date.

scholarly journals The Self-Assembly and Design of Polyfunctional Nanosystems

2021 ◽  
Vol 22 (4) ◽  
pp. 2223
Author(s):  
Ruslan Kashapov ◽  
Lucia Zakharova
Keyword(s):  
Sustainable Development ◽  
Nanostructured Materials ◽  
Self Assembly ◽  
Building Blocks ◽  
The Self ◽  
Special Issue ◽  
Molecular Building Blocks ◽  
Wide Range ◽  
Scientific Papers ◽  
Current Task

The current task of the molecular sciences is to create unique nanostructured materials with a given structure and with specific physicochemical properties on the basis of the existing wide range of molecules of natural and synthetic origin. A promising and inexpensive way to obtain nanostructured materials is the spontaneous self-assembly of molecular building blocks during random collisions in real dispersive systems in solution and at interfaces. This editorial aims to summarize the major points from the 11 scientific papers that contributed to the special issue “The Self-Assembly and Design of Polyfunctional Nanosystems”, assessing the modern self-assembly potential and strategies for maintaining sustainable development of the nanoindustry.

scholarly journals Deep Learning Method to Accelerate Discovery of Hybrid Polymer-Graphene Composites

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Farzaneh Shayeganfar ◽  
Rouzbeh Shahsavari
Keyword(s):  
Intermolecular Interaction ◽  
Density Functional ◽  
Polymer Network ◽  
Building Blocks ◽  
Structural Deformation ◽  
Mining Machine ◽  
Molecular Building Blocks ◽  
Wide Range ◽  
Holistic Understanding ◽  
2D Polymers

AbstractInterfacial encoded properties of polymer adlayers adsorbed on the graphene (GE) and silicon dioxide (SiO2) have been constituted a scaffold for the creation of new materials. The holistic understanding of nanoscale intermolecular interaction of 1D/2D polymer assemblies on substrate is the key to bottom-up design of molecular devices. We develop an integrated multidisciplinary approach based on electronic structure computation [density functional theory (DFT)] and big data mining [machine learning (ML)] in parallel with neural network (NN) and statistical analysis (SA) to design hybrid polymers from assembly on substrate. Here we demonstrate that interfacial pressure and structural deformation of polymer network adsorbed on GE and SiO2 offer unique directions for the fabrication of 1D/2D polymers using only a small number of simple molecular building blocks. Our findings serve as the platform for designing a wide range of typical inorganic heterostructures, involving noncovalent intermolecular interaction observed in many nanoscale electronic devices.

scholarly journals Alkoxy- and Silanol-Functionalized Cage-Type Oligosiloxanes as Molecular Building Blocks to Construct Nanoporous Materials

Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 524 ◽  
Author(s):  
Atsushi Shimojima ◽  
Kazuyuki Kuroda
Keyword(s):  
Hydrogen Bonding ◽  
Self Assembly ◽  
Recent Progress ◽  
Building Blocks ◽  
Nanoporous Materials ◽  
Silanol Groups ◽  
Molecular Building Blocks ◽  
Wide Range ◽  
Regioselective Functionalization ◽  
Significant Attention

Siloxane-based materials have a wide range of applications. Cage-type oligosiloxanes have attracted significant attention as molecular building blocks to construct novel siloxane-based nanoporous materials with promising applications such as in catalysis and adsorption. This paper reviews recent progress in the preparation of siloxane-based nanoporous materials using alkoxy- and silanol-functionalized cage siloxanes. The arrangement of cage siloxanes units is controlled by various methods, including amphiphilic self-assembly, hydrogen bonding of silanol groups, and regioselective functionalization, toward the preparation of ordered nanoporous siloxane-based materials.

Structural Modularity of Unique Multicomponent Hydrogen-Bonded Organic Frameworks Based on Organosilanetriols and Silanediols as Molecular Building Blocks

2018 ◽  
Vol 18 (7) ◽  
pp. 3805-3819 ◽  
Author(s):  
Miriam de J. Velásquez-Hernández ◽  
Aaron Torres-Huerta ◽  
Diego Martínez-Otero ◽  
Elí Sánchez-González ◽  
Uvaldo Hernández-Balderas ◽  
...  
Keyword(s):  
Building Blocks ◽  
Molecular Building Blocks ◽  
Hydrogen Bonded

Mechanical Bottom-up Nano-Assembling and Nano-Manipulation Using Shape Memory Alloy Nano-Gripper

2021 ◽  
Vol 323 ◽  
pp. 130-139
Author(s):  
Svetlana von Gratowski ◽  
Victor Koledov ◽  
Zoya Kosakowskiya ◽  
Peter Lega ◽  
Andrey Orlov ◽  
...  
Keyword(s):  
Shape Memory ◽  
Smart Materials ◽  
Field Effect Transistors ◽  
Building Blocks ◽  
Proof Of Concept ◽  
Bottom Up ◽  
Hierarchical Assembly ◽  
The Past ◽  
Wide Range ◽  
The World

The numerous 1-D and 2-D nanomaterials: nanotubes, nanowires (NWs), graphene, etc. were discovered, synthesized and intensively studied in the past decades. These nanomaterials had appeared to reveal the unique physical and functional properties allowing constructing the large number of nanodevice based on single nanoobjects. Recently many studies have led to a wide range of proof-of-concept of individual nanoscale devices including nanolasers, nanosensors, field-effect transistors (nanoFETs) and many others based on NWs, carbon nanotubes (CNT) and many other nanoobjects. Such nanodevices represent attractive building blocks for hierarchical assembly of microscale and macroscopic devices which are attractive for creating of micro-and –macro-devices and arrays by the bottom-up and hybrid paradigm. In this paper the conceptual survey is given of nowadays achievements in the field of mechanical bottom-up nanoassembling. We emphasize on the system based on smallest and the fastest in the World nanotweezer developed on the base of the new smart materials with shape memory effect for nanomanipulation of real nanoobjects. We discuss the recent experiments on nanomanipulation, nanoassembling and nanomanufacturing of nanoand micro-devices using this method, which in many cases can replaced very expensive “top-down” technologies.

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.

Stereospecific, Palladium-catalyzed C(sp3)–H Alkenylation and Alkynylation of a Proline Derivative Enabled by 8-Aminoquinoline as a Directing Group

2020 ◽  
Author(s):  
Aleksandra Balliu ◽  
Aaltje Roelofje Femmigje Strijker ◽  
Michael Oschmann ◽  
Monireh Pourghasemi Lati ◽  
Oscar Verho
Keyword(s):  
Carboxylic Acid ◽  
Building Blocks ◽  
Wide Range ◽  
Palladium Catalyzed ◽  
Directing Group ◽  
High Yields ◽  
Vinyl Iodides ◽  
Initial Results

<p>In this preprint, we present our initial results concerning a stereospecific Pd-catalyzed protocol for the C3 alkenylation and alkynylation of a proline derivative carrying the well utilized 8‑aminoquinoline directing group. Efficient C–H alkenylation was achieved with a wide range of vinyl iodides bearing different aliphatic, aromatic and heteroaromatic substituents, to furnish the corresponding C3 alkenylated products in good to high yields. In addition, we were able show that this protocol can also be used to install an alkynyl group into the pyrrolidine scaffold, when a TIPS-protected alkynyl bromide was used as the reaction partner. Furthermore, two different methods for the removal of the 8-aminoquinoline auxiliary are reported, which can enable access to both <i>cis</i>- and <i>trans</i>-configured carboxylic acid building blocks from the C–H alkenylation products.</p>

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