Controlled Synthesis of Titanate Nanodisks as Versatile Building Blocks for the Design of Hybrid Nanostructures

2012 ◽  
Vol 124 (27) ◽  
pp. 6712-6716 ◽  
Author(s):  
Cao-Thang Dinh ◽  
Yongbeom Seo ◽  
Thanh-Dinh Nguyen ◽  
Freddy Kleitz ◽  
Trong-On Do
Keyword(s):  
Building Blocks ◽  
Hybrid Nanostructures ◽  
Controlled Synthesis

Controlled Synthesis of Titanate Nanodisks as Versatile Building Blocks for the Design of Hybrid Nanostructures

2012 ◽  
Vol 51 (27) ◽  
pp. 6608-6612 ◽  
Author(s):  
Cao-Thang Dinh ◽  
Yongbeom Seo ◽  
Thanh-Dinh Nguyen ◽  
Freddy Kleitz ◽  
Trong-On Do
Keyword(s):  
Building Blocks ◽  
Hybrid Nanostructures ◽  
Controlled Synthesis

Rücktitelbild: Controlled Synthesis of Titanate Nanodisks as Versatile Building Blocks for the Design of Hybrid Nanostructures (Angew. Chem. 27/2012)

2012 ◽  
Vol 124 (27) ◽  
pp. 6900-6900
Author(s):  
Cao-Thang Dinh ◽  
Yongbeom Seo ◽  
Thanh-Dinh Nguyen ◽  
Freddy Kleitz ◽  
Trong-On Do
Keyword(s):  
Building Blocks ◽  
Hybrid Nanostructures ◽  
Controlled Synthesis

Controlled Synthesis of BaF2 Nanorods via Hydrothermal Microemulsion Method

2007 ◽  
Vol 121-123 ◽  
pp. 441-444
Author(s):  
Y.C. Chen ◽  
Y.G. Zhang
Keyword(s):  
Electron Microscopy ◽  
Raw Materials ◽  
Barium Chloride ◽  
Building Blocks ◽  
Controlled Synthesis ◽  
X Ray Diffraction ◽  
Microemulsion Method ◽  
X Ray ◽  
Transmission Electron ◽  
Microemulsion Droplet

BaF2 nanorods were synthesized by hydrothermal microemulsion method using sodium fluoride (NaF) and barium chloride (BaCl2) as the raw materials. The as-prepared products were characterized by powder X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM). The results showed that the products were composed of BaF2 nanorods with diameters of 18-62 nm and lengths up to 1μm. A directed aggregation growth process mediated by the microemulsion droplet building blocks is proposed for the formation of BaF2 nanorods. Further work is in progress to evaluate the possibility of synthesizing other fluoride 1D nanostructures using a similar method.

Interface-Controlled Synthesis of Au-BINOL Hybrid Nanostructures and Mechanism Study

Langmuir ◽  
2018 ◽  
Vol 34 (45) ◽  
pp. 13697-13704 ◽  
Author(s):  
Shashank Reddy Patlolla ◽  
Chen-Rui Kao ◽  
Ai-Hsuan Yeh ◽  
Hung-Min Lin ◽  
Yu-Chun Chuang ◽  
...  
Keyword(s):  
Hybrid Nanostructures ◽  
Controlled Synthesis ◽  
Mechanism Study

scholarly journals Concise Synthesis and Antimicrobial Evaluation of the Guanidinium Alkaloid Batzelladine D

2019 ◽  
Author(s):  
You-Chen Lin ◽  
Aubert Ribaucourt ◽  
Yasamin Moazami ◽  
Joshua Pierce
Keyword(s):  
Antimicrobial Activity ◽  
Late Stage ◽  
Building Blocks ◽  
Controlled Synthesis ◽  
Scale Preparation ◽  
Antimicrobial Evaluation ◽  
Coupling Partner

A concise synthesis of the tricyclic guanidinium alkaloid batzelladine D has been accomplished in a sequence of 8 steps from readily available building blocks. Highlights of the synthesis include gram-scale preparation of a late stage intermediate, pinpoint stereocontrol around the tricyclic skeleton and a modular strategy that enables analog generation. A key bicyclic b-lactam intermediate serves to not only control stereochemistry, but also serves as a pre-activated coupling partner to install the ester sidechain. The stereo-controlled synthesis allowed for the investigation of the antimicrobial activity of batzelladine D, demonstrating promising activity that is more potent for non-natural stereoisomers.

scholarly journals Controlled Synthesis of Linear Polyamidoamino Acids

Polymers ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1324 ◽  
Author(s):  
Federica Ferruti ◽  
Jenny Alongi ◽  
Amedea Manfredi ◽  
Elisabetta Ranucci ◽  
Paolo Ferruti
Keyword(s):  
Amino Acids ◽  
Building Blocks ◽  
Synthetic Polymers ◽  
Polymerization Process ◽  
Random Copolymers ◽  
Controlled Synthesis ◽  
Molecular Weights ◽  
Synthetic Procedure ◽  
Low Solubility ◽  
By Products

Polyamidoamino acids (PAACs) are synthetic polymers prepared by the polyaddition of bisacrylamides with natural α-amino acids, which in the process maintain both their chirality and their amphoteric nature. This polymerization process is slow, but has the merits of taking place in water and of neither involving protection/de-protection steps nor releasing by-products. However, it leads to polydisperse polymers and, using α-amino acids mixtures, random copolymers. This paper presents a step-by-step polyaddition process leading to homo- and copolymeric PAACs with controlled sequences and controlled molecular weights. It exploits the much different rates of the two Michael addition steps of NH2 of α-amino acids with acrylamides, and the low solubility in organic solvents of the α-amino acid addition products. As a proof of principle, the controlled synthesis of the PAAC from l-arginine and N,N′-methylenebisacrylamide was performed up to a monodisperse product with 11 monomeric units and molecular weight 1840. This synthetic procedure was also tested with l-alanine. All intermediates were isolated and characterized. Noticeably, all of them were α,ω-difunctionalized with either acrylamides or sec-amines and were, in fact, building blocks with potential for preparing complex macromolecular architectures. In a first instance, copolymers with controlled sequences of amidoamine- and amidoamino acid units were prepared.

ORGANIZED PLANAR NANOSTRUCTURES VIA INTERFACIAL SELF-ASSEMBLY AND DNA TEMPLATING

2004 ◽  
Vol 03 (01n02) ◽  
pp. 65-74 ◽  
Author(s):  
G. B. KHOMUTOV ◽  
M. N. ANTIPINA ◽  
A. N. SERGEEV-CHERENKOV ◽  
A. A. RAKHNYANSKAYA ◽  
M. ARTEMYEV ◽  
...  
Keyword(s):  
Self Assembly ◽  
Gold Nanoclusters ◽  
Langmuir Monolayers ◽  
Building Blocks ◽  
Pd Nanoparticles ◽  
Hybrid Nanostructures ◽  
Nanocomposite Films ◽  
Transmission Electron ◽  
Low Dimensional ◽  
Microscopy Techniques

The methods are presented for fabrication of new nanoscale-organized planar inorganic nanostructures, ultrathin polymeric and nanocomposite films on solid substrates with incorporated nanosized functional and structural building blocks. The methods are based on interfacial synthesis and self-assembly, DNA templating and scaffolding. Ultimately thin monomolecular and multilayer ordered stable polymeric and nanocomposite films containing incorporated ligand-stabilized gold nanoclusters, interfacially in-film grown metallic ( Au , Pd ) nanoparticles and organized low-dimensional nanostructures were formed. N-alkylated derivatives of poly(4-vinilpyridine) were synthesized and used as water-insoluble amphiphilic polycations to form organized polymeric Langmuir monolayers and novel planar DNA/amphiphilic polycation complexes at the air–aqueous DNA solution interface. The extended net-like and quasi-circular toroidal condensed conformations of deposited planar DNA/amphiphilic polycation complexes were obtained in dependence on the amphiphilic polycation monolayer state during the DNA binding. Planar DNA/amphiphilic polycation complexes were used as nanotemplates for fabrication of organized planar bio-organic–inorganic hybrid nanostructures with ordered nanophase inorganic components (quasi-one-dimensional arrays of semiconductor (CdS) and iron oxide nanoparticles and nanorods) organized in planar matrix of deposited DNA/amphiphilic polycation complex film. The formed nanostructures were characterized by atomic force microscopy and transmission electron microscopy techniques.

scholarly journals Generation and application of Cu-bound alkyl nitrene for the catalyst-controlled synthesis of cyclic β-amino acids

2021 ◽  
Author(s):  
Raj K Tak ◽  
Fuyuki Amemiya ◽  
Hidetoshi Noda ◽  
Masakatsu Shibasaki
Keyword(s):  
Amino Acids ◽  
Medicinal Chemistry ◽  
Building Blocks ◽  
Controlled Synthesis ◽  
New Methods

The advent of saturated N-heterocycles as valuable building blocks in medicinal chemistry has led to the development of new methods to construct such nitrogen-containing cyclic frameworks. Despite the apparent strategic...

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