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Hydroquinone–pyrrole dyads with varied linkers
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Nanoteknologi och funktionella material.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Nanoteknologi och funktionella material.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Nanoteknologi och funktionella material.ORCID-id: 0000-0002-5496-9664
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Nanoteknologi och funktionella material.
Vise andre og tillknytning
2016 (engelsk)Inngår i: Beilstein Journal of Organic Chemistry, ISSN 2195-951X, E-ISSN 1860-5397, Vol. 12, s. 89-96Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A series of pyrroles functionalized in the 3-position with p-dimethoxybenzene via various linkers (CH2, CH2CH2, CH=CH, C≡C) has been synthesized. Their electronic properties have been deduced from 1H NMR, 13C NMR, and UV–vis spectra to detect possible interactions between the two aromatic subunits. The extent of conjugation between the subunits is largely controlled by the nature of the linker, with the largest conjugation found with the trans-ethene linker and the weakest with the aliphatic linkers. DFT calculations revealed substantial changes in the HOMO–LUMO gap that correlated with the extent of conjugation found experimentally. The results of this work are expected to open up for use of the investigated compounds as components of redox-active materials in sustainable, organic electrical energy storage devices.

sted, utgiver, år, opplag, sider
2016. Vol. 12, s. 89-96
Emneord [en]
conjugation, heterocycles, hydroquinone, linker effect, pyrrole
HSV kategori
Forskningsprogram
Kemi med inriktning mot organisk kemi; Teknisk fysik med inriktning mot nanoteknologi och funktionella material
Identifikatorer
URN: urn:nbn:se:uu:diva-276440DOI: 10.3762/bjoc.12.10ISI: 000368473900001OAI: oai:DiVA.org:uu-276440DiVA, id: diva2:903022
Forskningsfinansiär
Swedish Foundation for Strategic Research Carl Tryggers foundation Stiftelsen Olle Engkvist ByggmästareSweGRIDS - Swedish Centre for Smart Grids and Energy StorageTilgjengelig fra: 2016-02-12 Laget: 2016-02-12 Sist oppdatert: 2017-11-30bibliografisk kontrollert
Inngår i avhandling
1. Quinone-Pyrrole Dyad Based Polymers for Organic Batteries: From Design to Application
Åpne denne publikasjonen i ny fane eller vindu >>Quinone-Pyrrole Dyad Based Polymers for Organic Batteries: From Design to Application
2017 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Organic electrode materials are finding increasing use in energy storage devices due to their attractive properties that allow building of flexible and low weight devices in an environmentally friendlier manner than traditional alternatives. Among these organic electrode materials, conducting redox polymers (CRPs), consisting of conducing polymer (CP) with covalently attached redox active pendant groups (PG), have attracted our interests. This is due to the advantageous synergy between CP and PG, e.g. electronic conductivity, high stability and large charge storage capacity. In this thesis polypyrrole has been selected as CP and quinones as PGs. A series of quinone-pyrrole dyad polymers has been synthesized with a variety of quinone substituents, demonstrating the adjustability of quinone formal potentials by choice of substituents. Importantly, in this series we show that the CP-PG redox match, i.e. that the formal potential of the PG is within the conducting region of the CP, is a requirement for fast charge transfer from the electrode to the PGs. Moreover, a series of quinone-pyrrole dyad polymers with various linkers was synthesized, showing that the choice of linker has a pronounced impact on the interactions between the PG and CP. In addition, the temperature dependence of conductance during doping of the polymers reveals the charge transport mechanism. To summarize, the adjustability of the quinone formal potential as well as the fast charge transport in the bulk material ensures the applicability of the CRPs as electrode materials in organic batteries.

sted, utgiver, år, opplag, sider
Uppsala: Acta Universitatis Upsaliensis, 2017. s. 73
Serie
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 1483
Emneord
Organic battery, conducting polymer, quinone, polypyrrole, spectroelectrochemistry, conductance
HSV kategori
Identifikatorer
urn:nbn:se:uu:diva-316492 (URN)978-91-554-9832-0 (ISBN)
Disputas
2017-04-21, Polhemsalen, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala, 09:15 (engelsk)
Opponent
Veileder
Tilgjengelig fra: 2017-03-30 Laget: 2017-03-01 Sist oppdatert: 2017-04-18

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