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Syntheses of 6,13-thiosubstituted pe...

University of New Hampshire.

Syntheses of 6,13-thiosubstituted pentacene derivatives and their related polymers.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Syntheses of 6,13-thiosubstituted pentacene derivatives and their related polymers.
Author:	Zhang, Xiaoyi.
Description:	172 p.
Notes:	Source: Masters Abstracts International, Volume: 53-01.
Notes:	Adviser: Glen P. Miller.
Contained By:	Masters Abstracts International53-01(E).
Subject:	Materials science.
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1525654
ISBN:	9781321102703

Syntheses of 6,13-thiosubstituted pentacene derivatives and their related polymers.
Zhang, Xiaoyi.

Syntheses of 6,13-thiosubstituted pentacene derivatives and their related polymers. - 172 p.

Source: Masters Abstracts International, Volume: 53-01.

Thesis (M.S.)--University of New Hampshire, 2014.

This item is not available from ProQuest Dissertations & Theses.

Organic semiconductors have many advantages over inorganic semiconductors, including low cost, good solubility in organic solvents and flexibility for coating or printing. In this thesis, I will study the knowledge of acenes, HOMO-LUMO gap, the representative pentacene derivatives and related polymers.

ISBN: 9781321102703Subjects--Topical Terms:

221779
Materials science.

Syntheses of 6,13-thiosubstituted pentacene derivatives and their related polymers.
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245 1 0 $a Syntheses of 6,13-thiosubstituted pentacene derivatives and their related polymers.
300 $a 172 p.
500 $a Source: Masters Abstracts International, Volume: 53-01.
500 $a Adviser: Glen P. Miller.
502 $a Thesis (M.S.)--University of New Hampshire, 2014.
506 $a This item is not available from ProQuest Dissertations & Theses.
506 $a This item must not be sold to any third party vendors.
506 $a This item must not be added to any third party search indexes.
520 $a Organic semiconductors have many advantages over inorganic semiconductors, including low cost, good solubility in organic solvents and flexibility for coating or printing. In this thesis, I will study the knowledge of acenes, HOMO-LUMO gap, the representative pentacene derivatives and related polymers.
520 $a Pentacene has the extended &pgr;-conjugated electronic structure which gives rise to a small HOMO-LUMO gap. However, due to the low solubility and susceptibility to photodegradation, there are some limitations for pentacene applications. Thus, it is . necessary to synthesize functionalized pentacenes in order to improve the solubility and stability.
520 $a In this research, different alkylthio-substituted pentacenes were synthesized and were characterized by NMR, MALDI-MS, UV-vis, and FT-IR. The newly synthesized pentacene derivatives show excellent solubility and photo-oxidative resistance. Their HOMO-LUMO gaps are approximately ~1.94 eV which is smaller than pentacene ~2.21 eV. They exhibit electron-donating properties and can be used as p-type semiconductors. We encountered difficulties in the aromatization and purification steps. To solve the problem, new experiments and methods were studied and utilized.
520 $a Functionalization of pentacene at the 6- and13- positions provides various chances to form oligomers or polymers which will have more unique properties for organic semiconductors, including promising charge carrier mobilities, high solubility and flexibility. Here, two major types of syntheses have been tried to form pentacene polymers and new "basket" shaped pentacene derivatives have been synthesized. Until now, the research of pentacene polymers still remain rare, but due to their potentially use for applications, more studies are under investigation.
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710 2 $a University of New Hampshire. $3 212819
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792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1525654