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Polymeric Porphyrins as Solar Photoc...

Day, Nicholas Upton.

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Polymeric Porphyrins as Solar Photocatalysts.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Polymeric Porphyrins as Solar Photocatalysts./
Author:	Day, Nicholas Upton.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2015,
Description:	139 p.
Notes:	Source: Dissertation Abstracts International, Volume: 77-05(E), Section: B.
Contained By:	Dissertation Abstracts International77-05B(E).
Subject:	Analytical chemistry. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3742857
ISBN:	9781339354729

Polymeric Porphyrins as Solar Photocatalysts.
Day, Nicholas Upton.

Polymeric Porphyrins as Solar Photocatalysts. - Ann Arbor : ProQuest Dissertations & Theses, 2015 - 139 p.

Source: Dissertation Abstracts International, Volume: 77-05(E), Section: B.

Thesis (Ph.D.)--Portland State University, 2015.

This item is not available from ProQuest Dissertations & Theses.

Research concentrated on the absorption, transformation, and storage of light energy is useful for the energy challenges faced by humanity. In particular, photocatalysis using solar energy to generate useful fuels has become a primary research goal in the drive to replace fossil fuels for the future. In this dissertation it is shown that poly-tetra(4-aminophenyl)porphyrin (pTAPP) can be oxidatively polymerized using a variety of methods, including electropolymerization, chemical oxidation, and interfacial polymerization and that pTAPP has photocatalytic ability to reduce O2 to H2O2 for a storable fuel.

ISBN: 9781339354729Subjects--Topical Terms:

3168300
Analytical chemistry.

Polymeric Porphyrins as Solar Photocatalysts.
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100 1 $a Day, Nicholas Upton. $3 3281224
245 1 0 $a Polymeric Porphyrins as Solar Photocatalysts.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2015
300 $a 139 p.
500 $a Source: Dissertation Abstracts International, Volume: 77-05(E), Section: B.
500 $a Adviser: Carl C. Wamser.
502 $a Thesis (Ph.D.)--Portland State University, 2015.
506 $a This item is not available from ProQuest Dissertations & Theses.
520 $a Research concentrated on the absorption, transformation, and storage of light energy is useful for the energy challenges faced by humanity. In particular, photocatalysis using solar energy to generate useful fuels has become a primary research goal in the drive to replace fossil fuels for the future. In this dissertation it is shown that poly-tetra(4-aminophenyl)porphyrin (pTAPP) can be oxidatively polymerized using a variety of methods, including electropolymerization, chemical oxidation, and interfacial polymerization and that pTAPP has photocatalytic ability to reduce O2 to H2O2 for a storable fuel.
520 $a Organic conductive polymers such as pTAPP are attractive catalysts because of their high surface area and ability to coat electrodes. pTAPP in a mixed oxidation state is shown to have both its minimum charge transfer resistance as well as its minimum impedance to electronic conductivity in the film. The UV-vis-NIR absorption spectra of pTAPP with increased oxidative doping are similar to hyperporphyrin spectra, characteristic of a two-plus charge localized on a single porphyrin unit. This suggests the presence of a bipolaron on the individual porphyrin units, and thus a bipolaron conductivity mechanism has been proposed.
520 $a pTAPP changes color depending on its oxidation state, and therefore is a promising material for electrochromic devices. A novel Pourbaix diagram was created as a means of illustrating the redox and protonation states of pTAPP as a function of changes in pH, applied potential, electrochromic behavior, and electronic conductivity.
520 $a Both pTAPP and pCoTAPP were shown to be effective catalysts for the reduction of oxygen to hydrogen peroxide, with pCoTAPP a better catalyst than pTAPP. When pCoTAPP is irradiated, oxygen reduction occurs close to the thermodynamic potential, indicating a promising system for storage of solar energy.
590 $a School code: 0180.
650 4 $a Analytical chemistry. $3 3168300
650 4 $a Physical chemistry. $3 1981412
650 4 $a Polymer chemistry. $3 3173488
650 4 $a Alternative Energy. $3 1035473
690 $a 0486
690 $a 0494
690 $a 0495
690 $a 0363
710 2 $a Portland State University. $b Chemistry. $3 1675108
773 0 $t Dissertation Abstracts International $g 77-05B(E).
790 $a 0180
791 $a Ph.D.
792 $a 2015
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3742857