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Photo-induced Electron Transfer in Molecular Systems and Nanoparticle Assemblies

Graff, Brittney (2017) Photo-induced Electron Transfer in Molecular Systems and Nanoparticle Assemblies. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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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Status: Unpublished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:
CreatorsEmailPitt UsernameORCID
Graff, Brittneybmg57@pitt.edubmg57
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairWaldeck, David H.dave@pitt.edudave
Committee MemberGarrett-Roe, Seansgr@pitt.eduSGR
Committee MemberHutchison, Geoffreygeoffh@pitt.eduGEOFFH0000-0002-1757-1980
Committee MemberArmitage, Brucearmy@andrew.cmu.edu
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 2017 16:28
URI: http://d-scholarship.pitt.edu/id/eprint/30553

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