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Wielopolski, Mateusz:

Testing Molecular Wires A Photophysical and Quantum Chemical Assay Mateusz Wielopolski Buch Springer Theses Englisch 2010 - gebunden oder broschiert

2010, ISBN: 9783642147395

[ED: Gebunden], [PU: Springer Berlin], One of the major challenges in current chemistry is to ?nd molecules able to move charges rapidly and ef?ciently from, for example, one terminus to … Mehr…

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Wielopolski, Mateusz:

Testing Molecular Wires A Photophysical and Quantum Chemical Assay Mateusz Wielopolski Buch Springer Theses Englisch 2010 - gebunden oder broschiert

2010, ISBN: 9783642147395

[ED: Gebunden], [PU: Springer Berlin], One of the major challenges in current chemistry is to ?nd molecules able to move charges rapidly and ef?ciently from, for example, one terminus to … Mehr…

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Testing Molecular Wires: A Photophysical and Quantum Chemical Assay (Springer Theses) - neues Buch

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This is a major contribution to the field of charge transport through organic pi-conjugated molecules. Besides its impact on molecular electronics, the work also applies to the design and… Mehr…

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Testing Molecular Wires: A Photophysical and Quantum Chemical Assay

The field of molecular electronics and organic photovoltaics is steadily growing. One of the major themes in molecular electronics is the construction, measurement, and understanding of the current-voltage response of an electronic circuit, in which molecules may act as conducting elements. The investigated molecular structures in this thesis have been shown to be suitable for distance-independent charge transport. More precisely, the systems investigated were of particular interest due to their ability to provide efficient electronic coupling between electroactive units, and display wire-like behavior in terms of transferring charges from donors to acceptors. Besides impacting on the field of molecular electronics, the results of this research also has applications in the design and development of light harvesting, photoconversion and catalytic modules. This work is a great asset to the field of charge transport through organic pi-conjugated molecules.

Detailangaben zum Buch - Testing Molecular Wires: A Photophysical and Quantum Chemical Assay


EAN (ISBN-13): 9783642147395
ISBN (ISBN-10): 3642147399
Gebundene Ausgabe
Erscheinungsjahr: 2010
Herausgeber: Springer Berlin
200 Seiten
Gewicht: 0,428 kg
Sprache: eng/Englisch

Buch in der Datenbank seit 2007-12-21T12:00:31+01:00 (Zurich)
Detailseite zuletzt geändert am 2021-09-21T12:10:46+02:00 (Zurich)
ISBN/EAN: 9783642147395

ISBN - alternative Schreibweisen:
3-642-14739-9, 978-3-642-14739-5


Daten vom Verlag:

Autor/in: Mateusz Wielopolski
Titel: Springer Theses; Testing Molecular Wires - A Photophysical and Quantum Chemical Assay
Verlag: Springer; Springer Berlin
182 Seiten
Erscheinungsjahr: 2010-11-04
Berlin; Heidelberg; DE
Gedruckt / Hergestellt in Niederlande.
Gewicht: 0,501 kg
Sprache: Englisch
106,99 € (DE)
109,99 € (AT)
118,00 CHF (CH)
POD

BB; Book; Hardcover, Softcover / Chemie/Physikalische Chemie; Physikalische Chemie; Verstehen; conjugated molecules; electron transfer; electronics; energy transfer; molecular bridges; molecular electronics; molecular wires; spectroscopy; transient absorption spectroscopy; B; Physical Chemistry; Applied and Technical Physics; Energy Systems; Physical Chemistry; Applied and Technical Physics; Electrical Power Engineering; Mechanical Power Engineering; Chemistry and Materials Science; Angewandte Physik; Energietechnik, Elektrotechnik und Energiemaschinenbau; BC; EA

I. Introduction and Motivation 1 1. Introduction to Molecular Electronics 2 1.1. Present Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.2. Limitations of Present Technology . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2. Motivation - Focusing on Molecular Wires 9 II. Theoretical Concepts 11 3. Concepts of Photoinduced Electron and Energy Transfer Processes Across Molecular Bridges 12 3.1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.2. Electron TransferMechanisms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.2.1. Superexchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.2.2. Charge Hopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 3.2.3. Interplay ofMechanisms . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 3.3. Electronic Energy Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 3.3.1. Coulombic Energy Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . 26 3.3.2. Exchange Energy Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4. Molecule-Assisted Transport of Charges and Energy Across Donor-Wire- Acceptor Junctions 30 4.1. Mechanisms of Charge Transfer throughMolecularWires . . . . . . . . . . . . 32 4.1.1. Superexchange Charge Transfer inMolecularWires . . . . . . . . . . . . 33 4.1.2. Sequential Charge Transfer inMolecularWires . . . . . . . . . . . . . . 34 4.2. Factors that Determine the Charge TransferMechanism . . . . . . . . . . . . . 36 4.2.1. Electronic Coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 4.2.2. EnergyMatching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 4.3. Specific Aspects of Photoinduced Electron Transfer in Organic ?-conjugated Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 4.3.1. Background . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . 40 4.3.2. The ClassicalMarcus Theory . . . . . . . . . . . . . . . . . . . . . . . . . 41 4.3.3. Photoexcitation and Relaxation Processes in Solution . . . . . . . . . . 45 4.3.3.1. Photoabsorption . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 4.3.3.2. The Franck Condon Principle and Radiative Transitions . . . . 49 4.3.3.3. The Franck Condon Principle and Radiationless Transitions . 52 4.3.3.4. Relaxation Processes Following Photoexcitation . . . . . . . . 55 4.3.3.5. Characterization by Stationary Spectroscopy . . . . . . . . . . 57 4.3.3.6. Characterization by Time-Resolved Spectroscopy . . . . . . . 58 4.3.3.7. Internal Conversion . . . . . . . . . . . . . . . . . . . . . . . . . 58 4.3.4. Influence of the Solvation on the Electronic Relaxation Dynamics . . . 59 4.3.4.1. Static Solvent Influence . . . . . . . . . . . . . . . . . . . . . . . 60 4.3.4.2. Dynamic Solvent Influence . . . . . . . . . . . . . . . . . . . . . 61 5. Examples of Molecular Wire Systems 63 5.1. Oligo(phenylenevinylene)s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 5.2. Oligophenylenes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 5.3. Oligo(thiophene) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 5.4. PhotonicWires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 III.Results and Discussion 70 6. Objective 71 7. Instruments and Methods 79 7.1. Photophysics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 7.1.1. Absorption spectroscopy . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 7.1.2. Steady-state emission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 7.1.3. Time-resolved emission . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 7.1.4. Femtosecond transient absorption spectroscopy . . . . . . . . . . . . . 80 7.1.5. Nanosecond laser Flash Photolysis . . . . . . . . . . . . . .

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