Graff, Brittney
(2017)
Photo-induced Electron Transfer in Molecular Systems and Nanoparticle Assemblies.
Doctoral Dissertation, University of Pittsburgh.
(Unpublished)
Abstract
Charge transfer is a fundamental and extremely important chemical reaction. Fully understanding charge transfer can provide insight into a multitude of emergent technologies (photovoltaics, molecular electronics, etc.). Donor-bridge-acceptor systems are among the most popular methods to study and model photo-induced charge transfer, and this approach is extended to donor and acceptor units that are nanoparticles in work described herein. Various models have been developed to describe charge transfer in molecular donor-bridge-acceptor systems and in nanoparticle assemblies; they can aid in understanding how charge is transferred.
This dissertation describes studies of both molecular donor-bridge-acceptors and nanoparticle assemblies. The first part of this dissertation examines donor-bridge-acceptor systems designed with a molecular cleft that can incorporate a solvent molecule which can facilitate charge transfer. In these studies, the molecular acceptor is modified and this dissertation describes how that modification can alter charge transfer kinetics. The second half of this dissertation describes studies of nanoparticle assemblies. First, the fabrication method and characterization of these well controlled covalently bound nanoparticle assemblies are described and the assemblies’ behavior is compared to molecular systems. Finally, this dissertation discusses studies in which a chiral bridge is placed between the donor and acceptor nanoparticles.
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Details
| Item Type: |
University of Pittsburgh ETD
|
| Status: |
Unpublished |
| Creators/Authors: |
|
| ETD Committee: |
|
| Date: |
23 January 2017 |
| Date Type: |
Publication |
| Defense Date: |
30 November 2016 |
| Approval Date: |
23 January 2017 |
| Submission Date: |
12 December 2016 |
| Access Restriction: |
5 year -- Restrict access to University of Pittsburgh for a period of 5 years. |
| Number of Pages: |
266 |
| Institution: |
University of Pittsburgh |
| Schools and Programs: |
Dietrich School of Arts and Sciences > Chemistry |
| Degree: |
PhD - Doctor of Philosophy |
| Thesis Type: |
Doctoral Dissertation |
| Refereed: |
Yes |
| Uncontrolled Keywords: |
nanoparticle, DBA |
| Date Deposited: |
23 Jan 2017 16:28 |
| Last Modified: |
23 Jan 2022 06:15 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/30553 |
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