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SYNTHESIS OF p-PHENYLENE VINYLENE DENDRONS & THEIR FUNCTIONALIZATION AND TESTING IN DYE-SENSITIZED SOLAR CELLS

Bell, Peter (2013) SYNTHESIS OF p-PHENYLENE VINYLENE DENDRONS & THEIR FUNCTIONALIZATION AND TESTING IN DYE-SENSITIZED SOLAR CELLS. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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Abstract

The novel synthesis of p-phenylene vinylene dendrons utilizing a Horner-Wadsworth-Emmons based approach is described. The extended, linear π conjugation along all the dendron branches, a feature absent in most dendrimers used for light harvesting, was expected to lead to an efficient light-harvesting system by acting as a dendritic molecular wire between peripheral donor chromophores and a core acceptor. To that end, nickel porphyrins were added to the
periphery of the dendrons as preparation for inclusion in dye-sensitized solar cells. The prepared dendron-porphyrin conjugates proved to be poor dyes. This disappointing result is attributed to the use of nickel porphyrins which were found to undergo non-radiative decay, making them
unsuitable for light-harvesting applications. Changes to the system are proposed, from replacing the nickel with zinc within the porphyrins to the use of alternative chromophores, to better test the dendrons function as molecular wires.

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Details

Item Type: University of Pittsburgh ETD
Status: Unpublished
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Bell, Peterndpeter@gmail.com
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairChapman, Tobytchapman@pitt.eduTCHAPMAN
Committee MemberWaldeck, Daviddave@pitt.eduDAVE
Committee MemberMeyer, Taratmeyer@pitt.eduTMEYER
Committee MemberLee, Jung-Kunjul37@pitt.eduJUL37
Date: 18 October 2013
Date Type: Publication
Defense Date: 3 May 2013
Approval Date: 18 October 2013
Submission Date: 18 October 2013
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 260
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: Phenylene Vinylene Dendrimers, Dye-Sentized Solar Cells, Linear Conjunction, Conjugated Dedrimers, Light-harvesting
Date Deposited: 18 Oct 2013 18:37
Last Modified: 15 Nov 2016 14:15
URI: http://d-scholarship.pitt.edu/id/eprint/19913

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