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High contrast and three color electr...

Welsh, Dean Matthew.

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High contrast and three color electrochromic polymers.

Record Type:	Electronic resources : Monograph/item
Title/Author:	High contrast and three color electrochromic polymers./
Author:	Welsh, Dean Matthew.
Description:	183 p.
Notes:	Source: Dissertation Abstracts International, Volume: 62-10, Section: B, page: 4556.
Contained By:	Dissertation Abstracts International62-10B.
Subject:	Chemistry, Organic. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3027616
ISBN:	0493396683

High contrast and three color electrochromic polymers.
Welsh, Dean Matthew.

High contrast and three color electrochromic polymers. - 183 p.

Source: Dissertation Abstracts International, Volume: 62-10, Section: B, page: 4556.

Thesis (Ph.D.)--University of Florida, 2001.

We synthesized several new electrochromic polymers that can be used in electrochromic device applications. A series of cathodically coloring polymers, based on the 3,4-alkylenedioxythiophene structure, were synthesized electrochemically, with all of them exhibiting low polymer oxidation potentials (-0.2 to 0.0 V vs. Ag/Ag+). The optical contrast and response times were enhanced in more highly substituted polymers when compared to the parent polymer poly(3,4-ethylenedioxythiophene) (PEDOT). In fact, the optical contrast in the dimethyl substituted 3,4-propylenedioxythiophene polymer (PProDOT-Me2) is the highest for known conjugated polymers, and this polymer is a very good candidate for use as a cathodically coloring polymer for dual-polymer electrochromic devices. The superiority of PProDOT-Me 2 was verified by measurement of coloration efficiency and relative luminance values for these polymers.

ISBN: 0493396683Subjects--Topical Terms:

516206
Chemistry, Organic.

High contrast and three color electrochromic polymers.
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020 $a 0493396683
035 $a (UnM)AAI3027616
035 $a AAI3027616
040 $a UnM $c UnM
100 1 $a Welsh, Dean Matthew. $3 1929798
245 1 0 $a High contrast and three color electrochromic polymers.
300 $a 183 p.
500 $a Source: Dissertation Abstracts International, Volume: 62-10, Section: B, page: 4556.
500 $a Chairman: John R. Reynolds.
502 $a Thesis (Ph.D.)--University of Florida, 2001.
520 $a We synthesized several new electrochromic polymers that can be used in electrochromic device applications. A series of cathodically coloring polymers, based on the 3,4-alkylenedioxythiophene structure, were synthesized electrochemically, with all of them exhibiting low polymer oxidation potentials (-0.2 to 0.0 V vs. Ag/Ag+). The optical contrast and response times were enhanced in more highly substituted polymers when compared to the parent polymer poly(3,4-ethylenedioxythiophene) (PEDOT). In fact, the optical contrast in the dimethyl substituted 3,4-propylenedioxythiophene polymer (PProDOT-Me2) is the highest for known conjugated polymers, and this polymer is a very good candidate for use as a cathodically coloring polymer for dual-polymer electrochromic devices. The superiority of PProDOT-Me 2 was verified by measurement of coloration efficiency and relative luminance values for these polymers.
520 $a Through the use of the Grignard metathesis reaction, soluble electroactive polymers with the PProDOT-Bu2 structure were synthesized. The MALDI-TOF mass spectrometry results indicate that polymers have Xn values of ca. 20, and the nature of the end groups have been identified. These polymers exhibit photoluminescence in solution, and can be doped in solution to a highly transparent conducting form. Solution cast films of these polymers show oxidation potentials and optical properties that are very similar to those of the electropolymerized polymers.
520 $a New extended conjugation carbazole and diphenylamine monomers with terminal EDOT moieties were synthesized with the amine group unsubstituted to allow easy synthesis of many derivatives. These two monomers electropolymerize at low potentials (0.44 and 0.32 V) to yield electroactive polymers that exhibit three distinct color states (yellow, green, and blue). The effect of substituting the terminal heterocycle with thiophene was studied for the carbazole polymer, and electropolymerization occurs at a slightly higher (0.67 V) monomer oxidation potential yielding a three color (yellow, green, and blue) electroactive polymer. All of these materials are good candidates as anodically coloring polymers in dual-polymer electrochromic devices.
590 $a School code: 0070.
650 4 $a Chemistry, Organic. $3 516206
650 4 $a Chemistry, Polymer. $3 1018428
690 $a 0490
690 $a 0495
710 2 0 $a University of Florida. $3 718949
773 0 $t Dissertation Abstracts International $g 62-10B.
790 1 0 $a Reynolds, John R., $e advisor
790 $a 0070
791 $a Ph.D.
792 $a 2001
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3027616