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Wednesday, August 12, 2020 | History

2 edition of Supramolecular properties of amphiphilic cyclodextrins found in the catalog.

Supramolecular properties of amphiphilic cyclodextrins

Deirdre C. O"Keefe

Supramolecular properties of amphiphilic cyclodextrins

by Deirdre C. O"Keefe

  • 250 Want to read
  • 18 Currently reading

Published by University College Dublin in Dublin .
Written in English

    Subjects:
  • Cyclodextrins.

  • Edition Notes

    Statementby Deirdre C. O"Keefe.
    ContributionsUniversity College Dublin. Department of Chemistry.
    The Physical Object
    Pagination(15), 223p. :
    Number of Pages223
    ID Numbers
    Open LibraryOL17495148M

    The critical micelle concentration (CMC) was tested and it was mg/L. The monodisperse micelles had core-shell structure and the mean diameter was around 40 nanometers. α-cyclodextrins were added in the suspension of micelles to form supramolecular hydrogel . The aggregation of cyclodextrins (CD) in aqueous solution is an old, yet still vastly unexplored topic that has been studied at least since the s. At that time, few authors took into consideration the possibility of formation of aggregates for the interpretation of thermodynamic and thermophysical properties of CDs in aqueous solution. The aggregates appear at quite low CD concentrations.

    Cyclodextrins: Properties and Industrial Applications is a comprehensive resource that includes information on cyclodextrins (CDs) structure, their properties, formation of inclusion complex with various compounds as well as their applications. The authors Sahar Amiri and Sanam Amiri, noted experts in the field of cyclodextrins, cover both the. For the past few years, traditional supramolecular chemistry based on the molecular recognition of macrocycles (i.e., cyclodextrins, crown ethers, cucurbiturils, calixarenes, etc.) has been an.

    Authored by two experts working in this important field of research, the timely book covers the latest advances in the synthesis of cyclodextrins, their properties and important industrial applications. To this end, the authors describe covalent and non-covalent assemblies, cyclodextrin inclusion complexes, cyclodextrin polymers, and modified cyclodextrins, resulting in an up-to-date overview.   Two kinds of supramolecular tools, amphiphilic self-assembly and γ-cyclodextrin mediated host-guest recognition, are used to manipulate the .


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Supramolecular properties of amphiphilic cyclodextrins by Deirdre C. O"Keefe Download PDF EPUB FB2

The major advantage of amphiphilic cyclodextrins is their self-assembly properties which are sufficient to form different nanosized carriers spontaneously without the presence of surfactants.

This superiority gives them amphiphilic properties resulting in the formation of supramolecular aggregates in the nanometer range (Duchene et al., b).Cited by: These derivatives can form a variety of supramolecular structures such as micelles, vesicles and nanoparticles.

The purpose of this review is to summarize applications of amphiphilic cyclodextrins in different areas of drug delivery, particularly in protein and peptide drug delivery and gene by: Self-Assembly of Amphiphilic Biotransesterified β-Cyclodextrins: Supramolecular Structure of Nanoparticles and Surface Properties.

Langmuir33 (32), DOI: /ir.7bCited by:   Cyclodextrins are well-known for their cavity and inclusion properties. They are scaffold molecules that can be chemically modified to obtain functional materials for various applications.

For instance, amphiphilic cyclodextrins have attracted tremendous interests from researchers of different fields because of their ability to self-assemble Cited by: 1. Request PDF | Supramolecular Liquid Crystals Based on Cyclodextrins | Cyclodextrin-based materials represent an environmentally friendly alternative to toxic liquid crystalline materials.

nanomaterials Article Cyclodextrin–Amphiphilic Copolymer Supramolecular Assemblies for the Ocular Delivery of Natamycin Blanca Lorenzo-Veiga 1, Hakon Hrafn Sigurdsson 1, Thorsteinn Loftsson 1 and Carmen Alvarez-Lorenzo 2,* 1 Faculty of Pharmaceutical Sciences, University of Iceland, Hofsvallag IS Reykjavik, Iceland; [email protected] (B.L.-V.); [email protected] (H.H.S.); [email protected] (T.L.).

The term ‘polymer’ refers to large molecules whose structure is composed of multiple repeating units and the prefix ‘supra’ meaning ‘beyond the limits of’.

Supramolecular polymers are a new category of polymers that can potentially be used for material applications beyond the limits of conventional polymers. By definition, supramolecular polymers are polymeric arrays of monomeric. Chromophore-appended cyclodextrins combine the supramolecular loading capabilities of cyclodextrins (CDs) with the optical properties of the affixed chromophores.

Among fluorescent materials, carbon dots (CNDs) are attractive and the feasibility of CND-appended CDs as sensors has been demonstrated by differe Recent Open Access Articles. Early examples in the formation of noncovalent polymers made use of van der Waals and complimentary H-bonding interactions [].Inone of us reported the first prototype of a supramolecular polymerization using an amphiphilic porphyrin derivative, where the constituent monomer units are cofacially joined together via only a van der Waals interaction in aqueous media.

tures and their amphiphilic properties. In this study, each phos-phane has been proven to supramolecularly interact with β-CDs. For example, addition of a stoichiometric amount of RAME-β-CD on aqueous solutions of water-soluble phosphanes 1–4 led to the formation of phosphaneRAME-β-CD supramolecular complexes.

Supramolecular systems formed by the binding of several cyclodextrins (CDs) to polymers or lipids, either via non-covalent or covalent links, open a wide range of possibilities for the delivery of active substances.

CDs can perform as multifunctionalizable cores to which very diverse (macro)molecules and drugs can be conjugated. This handbook presents recent advances and offers a comprehensive reference resource covering the developments in and applications of macrocyclic supramolecular assembly, with a focus on their construction, structural characters and biological functions.

He then joined the Department of Organic Chemistry at Jan Dlugosz University. He has published 35 papers and one book.

He is a member of the Polish Chemical Society and European Cyclodextrin Society. His research interests are in the field of cyclodextrin chemistry and supramolecular.

Amphiphilic Cyclodextrins – Advances in Synthesis and Supramolecular Chemistry (Eur. Org. Chem. 6/). Cyclodextrins in Pharmaceutics, Cosmetics, and Biomedicine covers a wide range of knowledge on cyclodextrins, from an overview of molecular and supramolecular aspects of cyclodextrin physicochemistry, to the latest outcomes in cyclodextrin use and future possibilities in the employment of these systems.

This book focuses on the derivatives and physicochemical and biological properties. 12 from supramolecular hydrogel [19]. Therefore, the hydrogels could be also obtained by treating the solution of diblock copolymer PLA-b- 1 1 1 -CD solution (Figure 3b).

The core-shell structure of hydrogel was achieved due to the amphiphilic nature of PLA-b-PEG copolymer and their micellar aggregation. The aggregation. Cyclodextrins in Pharmaceutics, Cosmetics, and Biomedicine covers a wide range of knowledge on cyclodextrins, from an overview of molecular and supramolecular aspects of cyclodextrin physicochemistry, to the latest outcomes in cyclodextrin use and future possibilities in the employment of these systems.

This book focuses on the derivatives and physicochemical and biological properties Reviews: 1. Novel supramolecular system of amphiphilic hyperbranched polymer with β-cyclodextrin and hyperbranched topography cavities: Synthesis and selective encapsulation. Polymer51, DOI: /r Amphiphilic cyclodextrins.

Amphiphilic CDs have been synthesized to increase interactions of CDs with biological membranes and to render self-assembly capacity in aqueous solutions. According to the groups conjugated onto CDs, the resulting derivatives can be classified into neutral, cationic, and anionic CD amphiphiles (Fig.

Title: Cyclodextrins as Supramolecular Organo-Catalysts VOLUME: 14 ISSUE: 13 Author(s):L. Marinescu and M. Bols Affiliation:Department of Chemistry and Nanoscience Center, University of Copenhagen, Universitetsparken 5, Kbh Ø, Denmark.

Keywords:Organocatalysis, cyclodextrins, artificial enzyme, rate acceleration, biomimic Abstract: The binding properties of cyclodextrins. Self-Assembly of Amphiphilic Biotransesterified β-Cyclodextrins: Supramolecular Structure of Nanoparticles and Surface Properties.

Jean-Luc Putaux CNRS, CERMAV, F Grenoble, France.The main driving force for this supramolecular assembly is host–guest complexation between cyclodextrin hosts and guest groups either of which may be discrete molecular species or substituents on a polymer backbone.

The effects of such complexation on properties at the molecular and macroscopic levels are discussed. Cyclodextrins (CDs) are cyclic oligosaccharides produced by enzymatic degradation of starch. The most common CDs are the main natural ones, α, β and γ, which are constituted of 6, 7 and 8 glucopyranose units, respectively.

The CD structure forms a torus or doughnut ring and the molecule actually exists as a truncated cone. The outer side of the toroid is hydrophilic in nature due to the.