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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…mehr
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.
Laurens Siebbeles studied chemistry at the Free University in Amsterdam and obtained his PhD degree at the FOMInstitute for Atomic and Molecular Physics in Amsterdam. He was a post-doc at the University of Paris Sud in France. Currently he is Professor in opto-electronic materials at the Delft University of Technology in The Netherlands. He studies the dynamics of charges and excitons in molecular materials and semiconductor nanocrystals. Charges and excitons are produced with high-energy electron or laser pulses and probed by time-resolved optical and microwave or terahertz measurements. The experiments are supported by theory of charge and exciton dynamics. Ferdinand Grozema studied chemistry at the University of Groningen and obtained his PhD degree at the Delft University of Technology. In 2007 he spent 7 months working as a visiting scholar at Northwestern University in Evanston, USA. Currently he is an Assistant Professor in the opto-electronic materials section at the Chemical Engineering Department of the Delft University of Technology in Delft. His research interests consist of theoretical and experimental studies of the properties and dynamics of excited states in bio/organic materials. The main focus of this research has been on charge transport in conjugated molecular wires and in DNA.
Inhaltsangabe
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
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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