Photoinduced Electron Transfer In Ordered Polymers
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Author | : |
Publisher | : |
Total Pages | : 7 |
Release | : 1991 |
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Long range photoinduced electron transfer between electron donor and acceptor groups is of considerable current interest in terms of strategies for artificial photosynthesis and studies regarding the redox properties of proteins. As part of an extensive study of long range electron transfer involving biopolymers, we have carried out this year investigations of the assembly of electron transfer agents in a system of model short peptides. Also studied is a polyelectrolyte that can adopt a helical conformation when electrostatically complexed with organic dye counter-ions. The principal interest in these systems has to do with the well ordered secondary structures adopted by peptide polymers, and the capabilities for synthetic modification of peptide side chains and end groups with chromophores or electroactive substituents. The present report gives a brief account of the following elements of work related to photochemical electron transfer themes: (1) the synthesis and photochemical characterization of chromophore-bound peptides and amino acid model compounds based on the amino acids, tryptophan and the spacer residue, alanine (Ala); (2) the study of binding of the cationic organic dye to a peptide electrolyte, for which cooperative dye loading and helix formation is important; and (3) completion of the synthesis of a new series of acridinium chromophores that have rod-like'' arrangements of inked aryl rings for assembly of electron donor-acceptor systems that will exhibit especially long lived charge separation.
Author | : |
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Total Pages | : 16 |
Release | : 2005 |
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The final report describes studies over a 13 year period having to do with photoinduced electron transfer for active chromophores and redox agents, including assembly of the components in water soluble polymers or polypeptides. The findings include observation of long range charge separation and electron transport using laser phototransient spectroscopy. The systems targeted in these studies include peptide assemblies for which helical conformations and aggregation are documented. Oligomeric peptides modified with non-native redox active groups were also selected for investigation. Highly charged polymers or peptides were investigated as host agents that resemble proteins. The overall goal of these investigations focused on the design and characterization of systems capable of artificial photosynthesis.
Author | : Yue Sheng |
Publisher | : |
Total Pages | : 510 |
Release | : 2001 |
Genre | : Oxidation-reduction reaction |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 292 |
Release | : 1992 |
Genre | : Aeronautics |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 484 |
Release | : 1994-02 |
Genre | : Power resources |
ISBN | : |
Author | : William R. Salaneck |
Publisher | : CRC Press |
Total Pages | : 896 |
Release | : 2001-10-18 |
Genre | : Science |
ISBN | : 9780203910870 |
Defines the state-of-the-art in interface science for electronic applications of organic materials. Updates understanding of the foundaiton of interfacial properties. Describes novel electronic devices created from conjugated polymers and organic molecular solids.
Author | : United States. Congress. House. Committee on Science, Space, and Technology |
Publisher | : |
Total Pages | : 850 |
Release | : 1995 |
Genre | : Federal aid to higher education |
ISBN | : 9780160473036 |
Author | : Sarah Holliday |
Publisher | : Springer |
Total Pages | : 119 |
Release | : 2018-03-22 |
Genre | : Technology & Engineering |
ISBN | : 3319770918 |
This book reports on the design, synthesis and characterization of new small molecule electron acceptors for polymer solar cells. Starting with a detailed introduction to the science behind polymer solar cells, the author then goes on to review the challenges and advances made in developing non-fullerene acceptors so far. In the main body of the book, the author describes the design principles and synthetic strategy for a new family of acceptors, including detailed synthetic procedures and molecular modeling data used to predict physical properties. An indepth characterization of the photovoltaic performance, with transient absorption spectroscopy (TAS), photo-induced charge extraction, and grazing incidence X-ray diffraction (GIXRD) is also included, and the author uses this data to relate material properties and device performance. This book provides a useful overview for researchers beginning a project in this or related areas.
Author | : Karl M. Kadish |
Publisher | : The Electrochemical Society |
Total Pages | : 1784 |
Release | : 1994 |
Genre | : Science |
ISBN | : 9781566770828 |
Author | : Bin Ding |
Publisher | : Springer Science & Business Media |
Total Pages | : 518 |
Release | : 2014-04-10 |
Genre | : Technology & Engineering |
ISBN | : 3642541607 |
This book offers a comprehensive review of the latest advances in developing functional electrospun nanofibers for energy and environmental applications, which include fuel cells, lithium-ion batteries, solar cells, supercapacitors, energy storage materials, sensors, filtration materials, protective clothing, catalysis, structurally-colored fibers, oil spill cleanup, self-cleaning materials, adsorbents, and electromagnetic shielding. This book is aimed at both newcomers and experienced researchers in the field of nanomaterials, especially those who are interested in addressing energy-related and environmental problems with the help of electrospun nanofibers. Bin Ding, PhD, and Jianyong Yu, PhD, are both Professors at the College of Materials Science and Engineering, Donghua University, China.