Subject:
All Disciplines Arts & Humanities Biology & Life Sciences Business & Economics Chemistry & Materials Science Computer Science & Mathematics Engineering Environmental & Earth Sciences Medicine & Pharmacology Physical Sciences Public Health & Healthcare Social Sciences
Sort:
Hottest Latest Alphabetical (A-Z) Alphabetical (Z-A)
Type:
All Topic Review Biography
Topic Review
Atomic-Scale Imaging of Organic-Inorganic Hybrid Perovskite
Transmission electron microscope (TEM) is thought as one powerful tool to imaging the atomic-level structure of organic inorganic hybrid perovskite (OIHP) materials, which provides valuable and essential guidance toward high performance OIHP-related devices. 
  • 249
  • 07 Jul 2023
Topic Review
Atomic-Scale Nano-Ionic Memristor Microwave Switches
Nanomaterials science is becoming the foundation stone of high-frequency applications. The downscaling of electronic devices and components allows shrinking chip’s dimensions at a more-than-Moore rate. Many theoretical limits and manufacturing constraints are yet to be taken into account. A promising path towards nanoelectronics is represented by atomic-scale materials. In this entry, we offer a perspective on a specific class of devices, namely switches designed and fabricated using two-dimensional or nanoscale materials, like graphene, molybdenum disulphide, hexagonal boron nitride and ultra-thin oxides for high-frequency applications.
  • 547
  • 07 Apr 2021
Topic Review
Atomically Dispersed Catalytic Sites for Photocatalytic Water Splitting
SAPCs provide a new pathway for the construction of high performance cocatalyst/photocatalyst composites. For the past few years, the preparation method, characterization technology, theoretical modeling, and mechanism investigation of SAPCs have been developed rapidly, promoting the rational design and fabrication of more efficient SAPCs. As discussed above, benefitting from their low-coordination status, unique electric structures, and metal-support interactions, SAPCs can bring about unique advantages in comparison with the nanocluster-based, nanoparticle-based, and bulk catalysts.
  • 540
  • 15 Nov 2021
Topic Review
Atropa Belladonna
Atropa belladonna, commonly known as belladonna or deadly nightshade, is a toxic perennial herbaceous plant in the nightshade family Solanaceae, which also includes tomatoes, potatoes, and eggplant (aubergine). It is native to Europe, North Africa, and Western Asia. Its distribution extends from Great Britain in the west to western Ukraine and the Iranian province of Gilan in the east. It is also naturalised or introduced in some parts of Canada and the United States. The foliage and berries are extremely toxic when ingested, containing tropane alkaloids. These toxins include atropine, scopolamine, and hyoscyamine, which cause delirium and hallucinations, and are also used as pharmaceutical anticholinergics. Tropane alkaloids are of common occurrence not only in the Old World tribes Hyoscyameae (to which the genus Atropa belongs) and Mandragoreae, but also in the New World tribe Datureae - all of which belong to the subfamily Solanoideae of the plant family Solanaceae. Atropa belladonna has unpredictable effects. The antidote for belladonna poisoning is physostigmine or pilocarpine, the same as for atropine.
  • 2.2K
  • 25 Nov 2022
Topic Review
Atropisomers by Oxidative Aromatization
Atropisomers are fascinating objects of study by themselves for chemists but also find applications in various sub-fields of applied chemistry. Among these strategies, oxidative aromatization with central-to-axial conversion of chirality has gained increasing popularity. It consists of the oxidation of a cyclic non-aromatic precursors into the corresponding aromatic atropisomers.
  • 426
  • 18 Apr 2023
Topic Review
ATT Triplex and DNA
Due to the involvement of DNA:RNA hybrids and triplex helices in many essential functions in cells, this entry’s main aim is to detect benzothiazole based moieties with selective binding or spectroscopic response to these nucleic structures compared to regular (non-hybrid) DNA and RNA duplexes and single-stranded forms.
  • 622
  • 29 Mar 2022
Topic Review
Au-Containing Cuprates
High pressure applications is strongly required for the synthesis of these materials because it is only way to stabilize gold oxides which are thermally very unstable at ambient pressures.
  • 447
  • 19 Apr 2021
Topic Review
Au(III) Cyclometallated Compounds with 2-Arylpyridines
A large numbers of reports (>100) described molecules (>500) and single crystal X-ray structures (>200) indicated that the Au(III) compounds with 2-arylpyridines* and their derivatives or analogues are interesting from the chemical, spectroscopic, and structural viewpoints. The most popular Au(III)-2PPY* species are those with 2-phenylpyridine* and 2-(4-methylphenyl)pyridine*, while among Au(III)-2ArPY* molecules-those containing 2-benzylpyridine* ring system.
  • 287
  • 15 Mar 2023
Topic Review
AuNP-liposome Nanocomposites: Architectures, Chemistry of Preparation, Analytical Characterization
These contents aim to provide a comprehensive understanding of the various architectures of AuNP-liposome nanocomposites and the factors influencing their formation. The objectives of these contents are to: 1. Define the term "architecture" concerning the spatial assembly of AuNP (gold nanoparticles) and liposomes, highlighting the various forms in which these assemblies can exist. 2. Explain how the architectures of AuNP-liposome nanocomposites depend on factors such as the size, shape, and surface chemistry of AuNP, as well as the characteristics of the hosting liposomes and the methods used to prepare the nanocomposites. 4. Discuss the different starting materials that can be used to create AuNP-liposome nanocomposites, including pre-prepared AuNP, gold ions that need to be reduced in situ, and ionic/molecular precursors of gold. 4. Describe the specific chemistry which can be employed to encapsulate hydrophilic and hydrophobic pre-prepared AuNP into liposomes, depending on the type of interactions (electrostatic or covalent) provided and the size of the AuNP.
  • 316
  • 26 Jul 2023
Topic Review
AuNP-Liposome Nanocomposites: Rationale of Preparation
AuNP are poor drug delivery candidates based on the lack of a reservoir or a matrix to load therapeutics. In fact, loading of therapeutics are limited to the surface of the AuNP, and thus the loading capacity is intrinsically less than other nanocarriers (lipidic or polymeric) on weight per weight bases. However, AuNP have excellent optical and thermal properties and has been proven as an excellent light absorber in the UV-vis region of the spectrum with excellent photothermal conversion efficiency to generate local heat that can be employed to fight nearby cancer cells or to induce drug delivery from the hosting matrix.
  • 297
  • 24 Jul 2023
  • Page
  • of
  • 467
Featured Entry Collections
>>

Featured Books

>>
Encyclopedia of Social Sciences
Encyclopedia of COVID-19
Encyclopedia of Fungi
Encyclopedia of Digital Society, Industry 5.0 and Smart City
Video Production Service
Feedback