Charge and Exciton Transport through Molecular Wires / Edition 1

Charge and Exciton Transport through Molecular Wires / Edition 1

by Laurens D. A. Siebbeles
     
 

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ISBN-10: 3527325018

ISBN-13: 9783527325016

Pub. Date: 03/29/2011

Publisher: Wiley

As functional elements in opto-electronic devices approach the singlemolecule limit, conducting organic molecular wires are the appropriate interconnects that enable transport of charges and charge-like particles such as excitons within the device. Reproducible syntheses and a thorough understanding of the underlying principles are therefore indispensable for

Overview

As functional elements in opto-electronic devices approach the singlemolecule limit, conducting organic molecular wires are the appropriate interconnects that enable transport of charges and charge-like particles such as excitons within the device. Reproducible syntheses and a thorough understanding of the underlying principles are therefore indispensable for applications like even smaller transistors, molecular machines and light-harvesting materials. Bringing together experiment and theory to enable applications in real-life devices, this handbook and ready reference provides essential information on how to control and direct charge transport. Readers can therefore obtain a balanced view of charge and exciton transport, covering characterization techniques such as spectroscopy and current measurements together with quantitative models. Researchers are thus able to improve the performance of newly developed devices, while an additional overview of synthesis methods highlights ways of producing different organic wires. Written with the following market in mind: chemists, molecular physicists, materials scientists and electrical engineers.

Product Details

ISBN-13:
9783527325016
Publisher:
Wiley
Publication date:
03/29/2011
Pages:
334
Product dimensions:
6.90(w) x 9.60(h) x 0.80(d)

Table of Contents

INTRODUCTION: MOLECULAR ELECTRONICS AND MOLECULAR WIRES
Introduction
Single-Molecule Devices
Transport of Charges and Excitons in Molecular Wires

PART I: Molecules between Electrodes

QUANTUM INTERFERENCE IN ACYCLIC MOLECULES
Introduction
Theoretical Methods
Interference in Acyclic Cross-Conjugated Molecules
Understanding Interference in Model Systems
Using Interference for Devices
Probing the Limits of Calculations: Important Real-World Phenomena
Conclusions

HOPPING TRANSPORT IN LONG CONJUGATED MOLECULAR WIRES CONNECTED TO METALS
Introduction
Charge Transport Mechanisms
Oligophenylene Imine Molecular Wires: A Flexible System for Examining the Physical Organic Chemistry of Hopping Conduction in Molecules
Outlook: Probing the Physical Organic Chemistry of Hopping Conduction

PART II: Donor-Bridge-Acceptor Systems

TUNNELING THROUGH CONJUGATED BRIDGES IN DESIGNED DONOR-BRIDGE-ACCEPTOR MOLECULES
Introduction
Through-Bond Electronic Coupling in Pi-Conjugated Bridges
Conclusions

BASE PAIR SEQUENCE AND HOLE TRANSFER THROUGH DNA: RATIONAL DESIGN OF MOLECULAR WIRES
Introduction
Spectral Signatures of Charge Transfer
Charge Injection into A-Tracts
Crossover from Superexchange to Hopping in Sa—An—Sd
Symmetry Breaking in Sa—An—Sa
Influence of a Single G on Charge Transport
Molecular Wire Behavior in Sa—A2-3G1-7—SD
Charge Transfer through Alternating Sequences
Theoretical Descriptions of Charge Transfer through DNA
Conclusion

CHARGE TRANSPORT THROUGH MOLECULES: ORGANIC NANOCABLES FOR MOLECULAR ELECTRONICS
Introduction
Theoretical Concepts
Charge Transport along Pi-Conjugated Bridges in C60-Containing Donor-Bridge-Acceptor Conjugates
Conclusion

PART III: Charge Transport through Wires in Solution

ELECTRON AND EXCITON TRANSPORT TO APPENDED TRAPS
Introduction
Experimental Methods to Investigate Transport to Appended Traps
Results on Transport to Traps
Comparison and Perspectives

ELECTRON LATTICE DYNAMICS AS A METHOD TO STUDY CHARGE TRANSPORT IN CONJUGATED POLYMERS
Introduction
Methodology
Results
Summary

CHARGE TRANSPORT ALONG ISOLATED CONJUGATED MOLECULAR WIRES MEASURED BY PULSE RADIOLYSIS TIME-RESOLVED MICROWAVE CONDUCTIVITY
Introduction
Pulse-Radiolysis Time-Resolved Microwave Conductivity
Mechanisms for Charge Transport along Conjugated Chains
The Meaning of the Mobility at Microwave Frequencies
Charge Transport along Ladder-Type PPP
Effect of Torsional Disorder on the Mobility
Effect of Chain Coiling on the Mobility of Charges
Supramolecular Control of Charge Transport along Molecular Wires
Summary and Outlook

PART IV: Exciton Transport through Conjugated Molecular Wires

STRUCTURE PROPERTY RELATIONSHIPS FOR EXCITON TRANSFER IN CONJUGATED POLYMERS
Introduction
Signal Gain in Aplifying Fluorescent Polymers
Directing Energy Transfer within CPs: Dimensionality and Molecular Design
Lifetime Modulation
Conformational Dependence on Energy Migration: Conjugated Polymer-Liquid Crystal Solutions
Conclusions

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