Biocompatible Photochromic Diketopiperazine-based Supramolecular Hydrogelator Systems PDF Download
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Author: Anna-Lena Leistner
Publisher: Logos Verlag Berlin GmbH
ISBN: 3832557075
Category :
Languages : en
Pages : 366
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Book Description
In the course of the last twenty years, the research interest in 'photochemical switches' highly increased. They react on light, which can be controlled with excellent spatiotemporal precision, yet it is orthogonal towards most elements of chemical and biochemical systems. Therefore, light is an attractive trigger to control or study biological function or functional materials. In this work, the excellent properties of azobenzene photoswitches were combined with the cyclic dipeptide structural motif, resulting in phototriggered supramolecular low-molecular-weight gelators (LMWGs). Hydrogels are soft materials, which often find application in biomedical context and can be formed by self-assembly of LMWGs. They classify by their self-healing properties, thixotropy, on-demand reversibility and stimuli responsiveness, for example to light. The photoswitches inside photochromic hydrogels react in spatiotemporal precision to light irradiation and are excellent candidates for photo-controlled drug release. The versatility of azobenzene containing DKP-Lys hydrogelators was demonstrated in this thesis.
Author: Anna-Lena Leistner
Publisher: Logos Verlag Berlin GmbH
ISBN: 3832557075
Category :
Languages : en
Pages : 366
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Book Description
In the course of the last twenty years, the research interest in 'photochemical switches' highly increased. They react on light, which can be controlled with excellent spatiotemporal precision, yet it is orthogonal towards most elements of chemical and biochemical systems. Therefore, light is an attractive trigger to control or study biological function or functional materials. In this work, the excellent properties of azobenzene photoswitches were combined with the cyclic dipeptide structural motif, resulting in phototriggered supramolecular low-molecular-weight gelators (LMWGs). Hydrogels are soft materials, which often find application in biomedical context and can be formed by self-assembly of LMWGs. They classify by their self-healing properties, thixotropy, on-demand reversibility and stimuli responsiveness, for example to light. The photoswitches inside photochromic hydrogels react in spatiotemporal precision to light irradiation and are excellent candidates for photo-controlled drug release. The versatility of azobenzene containing DKP-Lys hydrogelators was demonstrated in this thesis.
Author: Zbigniew L. Pianowski
Publisher: John Wiley & Sons
ISBN: 3527827617
Category : Science
Languages : en
Pages : 1577
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Book Description
A comprehensive overview about the emerging field of photoswitches and their applications in materials science and biology Molecular Photoswitches guides the reader through the basic molecular structures of photochromic compounds and their applications in the area of photoresponsive materials as well as in the biological context. The initial chapters describe individual classes of molecular photoswitches, introducing their principles of photochromism, typical switching wavelengths, thermal stability of photoisomers and other key information, which is ordinarily spread in the literature. These classes comprise i.a. azobenzenes, diazocines, arylazoheterocycles, arylhydrazones, indigoids, photochromic imines, or acylhydrazones. The book also covers: Catalysis with molecular switches Applications in photochromic porous materials, liquid crystals, or nanoparticles Light-responsive molecular machines, logic devices, and molecular magnets Photomodulation of biological systems: photoswitchable biopolymers, lightmodulated antibiotics, cytotoxins, ion channel inhibitors, light-propelled artificial muscles, and computationally designed photochromic proteins This two-volume work is a valuable guide for researchers and non-experts working in the field of photochemistry, organic chemistry, catalysis, materials science, biology, and medicine.
Author: Wilhelm T.S. Huck
Publisher: Springer Science & Business Media
ISBN: 0387256563
Category : Technology & Engineering
Languages : en
Pages : 249
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Book Description
Nanotechnology has received tremendous interest over the last decade, not only from the scientific community but also from a business perspective and from the general public. Although nanotechnology is still at the largely unexplored frontier of science, it has the potential for extremely exciting technological innovations that will have an enormous impact on areas as diverse as information technology, medicine, energy supply and probably many others. The miniturization of devices and structures will impact the speed of devices and information storage capacity. More importantly, though, nanotechnology should lead to completely new functional devices as nanostructures have fundamentally different physical properties that are governed by quantum effects. When nanometer sized features are fabricated in materials that are currently used in electronic, magnetic, and optical applications, quantum behavior will lead to a set of unprecedented properties. The interactions of nanostructures with biological materials are largely unexplored. Future work in this direction should yield enabling technologies that allows the study and direct manipulation of biological processes at the (sub) cellular level.
Author: Maria Vittoria Russo
Publisher: Springer Science & Business Media
ISBN: 9048131928
Category : Technology & Engineering
Languages : en
Pages : 288
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Book Description
"Polymeric and Nanostructured Macromolecules" presents the recent advances made in the synthesis, characterization, and applications of polymeric macromolecules. This book provides an excellent overview of the recent breakthroughs in the science of macromolecules, with an emphasis on nanostructured macromolecules and the perspectives that these versatile materials offer to different fields such as optoelectronics and biotechnology. Advanced undergraduate, graduate students and researchers alike will find the topics concerning physical and chemical properties of advanced macromolecular materials of great interest.
Author: University of Massachusetts (Amherst campus)
Publisher:
ISBN:
Category :
Languages : en
Pages : 228
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Book Description
Author: Yuriy A. Knirel
Publisher: Springer Science & Business Media
ISBN: 3709107334
Category : Science
Languages : en
Pages : 444
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Book Description
The bacterial lipopolysaccharide also known as endotoxin is exhaustively covered in the present work. Central emphasis is placed upon the fine chemical structure of the lipopolysaccharide and its significance for understanding their activity and function. In particular, the role it plays in the interaction of bacteria with other biological systems is examined. New aspects of their physicochemical biology are introduced and updates to the current knowledge concerning the lipopolysaccharide are provided. This important class of biomolecules has recently attracted the attention of many investigators, in particular for understanding its involvement in innate immunity, toll-like receptor recognition and intracellular signaling.
Author: Jun-Ichi Yoshida
Publisher: John Wiley & Sons
ISBN: 352734487X
Category : Science
Languages : en
Pages : 260
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Book Description
Organic Redox Chemistry Explore the most recent advancements and synthesis applications in redox chemistry Redox chemistry has emerged as a crucial research topic in synthetic method development. In Organic Redox Chemistry: Chemical, Photochemical and Electrochemical Syntheses, some key researchers in this field, including editors Dr. Frédéric W. Patureau and the late Dr. Jun-Ichi Yoshida, deliver an insightful exploration of this rapidly developing topic. This book highlights electron transfer processes in synthesis by using different techniques to initiate them, allowing for a multi-directional perspective in organic redox chemistry. Covering a wide array of the important and recent developments in the field, Organic Redox Chemistry will earn a place in the libraries of chemists seeking a one-stop resource that compares chemical, photochemical, and electrochemical methods in organic synthesis.
Author: Sandra Knowles Weller
Publisher: Caister Academic Press Limited
ISBN: 9781904455769
Category : Science
Languages : en
Pages : 0
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Book Description
Alphaherpesviruses are a fascinating group of DNA viruses that includes important human pathogens such as herpes simplex virus type 1 (HSV-1), HSV-2, and varicella-zoster virus (VZV): the causative agents of cold sores, genital ulcerous disease, and chickenpox/shingles, respectively. A key attribute of these viruses is their ability to establish lifelong latent infection in the peripheral nervous system of the host. Such persistence requires subversion of the host's immune system and intrinsic antiviral defense mechanisms. Understanding the mechanisms of the immune evasion and what triggers viral reactivation is a major challenge for today's researchers. This has prompted enormous research efforts into understanding the molecular and cellular biology of these viruses. This up-to-date and comprehensive volume aims to distill the most important research in this area providing a timely overview of the field. Topics covered include: transcriptional regulation, DNA replication, translational control, virus entry and capsid assembly, the role of microRNAs in infection and oncolytic vectors for cancer therapy. In addition there is coverage of virus-host interactions, including apoptosis, subversion of host protein quality control and DNA damage response pathways, autophagy, establishment and reactivation from latency, interferon responses, immunity and vaccine development. Essential reading for everyone working with alphaherpesviruses and of interest to all virologists working on latent infections.
Author: Daniel E. Levy
Publisher: CRC Press
ISBN: 1420027956
Category : Medical
Languages : en
Pages : 906
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Book Description
Intrigued as much by its complex nature as by its outsider status in traditional organic chemistry, the editors of The Organic Chemistry of Sugars compile a groundbreaking resource in carbohydrate chemistry that illustrates the ease at which sugars can be manipulated in a variety of organic reactions. Each chapter contains numerous examples demonst
Author:
Publisher:
ISBN:
Category : Heterocyclic compounds
Languages : en
Pages : 420
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Book Description
