Fast electrochromic polymers based on new poly(3,4-alkylenedioxythiophene) derivatives

Welsh, Dean M.; Kumar, Anil; Morvant, Mark C.; Reynolds, John R.

doi:10.1016/s0379-6779(98)01014-5

Cited by 61 publications

(38 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[68] A Reynolds review summarizes the developments of his group's work. [69] A solid state electrochromic device based on two optically complementary conducting polymers has been made. [70] …”

Section: Electroactive Polymersmentioning

confidence: 99%

Electrochromic Systems and the Prospects for Devices

2001

View full text Add to dashboard Cite

Many inorganic and organic materials exhibit redox states with distinct electronic (UV‐vis) absorption bands. When the switching of redox states generates new or different visible region bands, the material is electrochromic. Electrochromic materials are currently attracting much interest in academia and industry for both their fascinating spectroelectrochemical properties and their commercial applications. In this review some of the most important examples from the major classes of electrochromic materials are highlighted. Examples of their use in both prototype and commercial electrochromic devices are illustrated including car mirrors, windows and sun‐roofs of cars, windows of buildings, displays (see Figure), printing, and frozen‐food monitoring.

show abstract

Section: Electroactive Polymersmentioning

confidence: 99%

Electrochromic Systems and the Prospects for Devices

2001

View full text Add to dashboard Cite

show abstract

“…[5][6][7] Of the available electrochromic materials, conjugated conducting polymers have become widely researched electrochromic materials because of their fast switching speeds, improved processability, and color tunability through structural modification. [8][9][10][11][12] Recently, our group has produced a series of alkyland alkoxy-substituted poly(3,4-propylenedioxythiophene)s (PProDOTs) that are soluble in common organic solvents and therefore easily processable by spin-coating or spray-casting. [13] The branched polymer (bis(ethylhexyloxy)-substituted PPro-DOT, PProDOT-(CH 2 OEtHx) 2 ), has been investigated as the active layer in a reflective electrochromic device (ECD), switching between highly absorbing and highly reflecting states.…”

Section: Introductionmentioning

confidence: 99%

A Poly(3,4‐alkylenedioxythiophene) Electrochromic Variable Optical Attenuator with Near‐Infrared Reflectivity Tuned Independently of the Visible Region

Dyer

Grenier

Reynolds

2007

Adv Funct Materials

121

View full text Add to dashboard Cite

Disubstituted poly(3,4‐propylenedioxythiophene)s (PProDOTs) exhibit large electrochromic contrasts in the near infrared (NIR) while showing essentially no color change in the visible region when incorporated into a reflective device platform. The source of this is attributed to a conductive front that propagates through the insulating polymer film, extending from the polymer/electrode interface to the top of the polymer film. A utility of the large contrasts seen in the NIR region is demonstrated with application of the device as an electrochromic variable optical attenuator modulating fiber‐optic signals for optical telecommunications. With bis(ethylhexyloxy)‐substituted PProDOT as the active electrochromic polymer in the device, an optical attenuation of 11 dB at the telecommunications wavelengths of 1.31 and 1.55 μm is achieved with only a 0.1–0.2 dB optical loss in the bleached state. Other favorable properties include optical memory in the absorbing state, switching speeds of under 1 s, a low operating voltage of ±1.2 V, and an improved processability that allows spray‐casting from organic solvents.

show abstract

“…Cyclic voltammetry showed that the PEDOT‐MA and PProDOT‐MA films coated on ITO glass had oxidation potentials of +0.14 and +0.3 V versus Ag/AgCl, respectively, (Figure 2c). The oxidation potential of PProDOT‐MA was shifted to more positive values because the electron donating oxygen atoms were separated by the propylene in the ProDOT derivative, which should provide a larger degree of freedom for the movement of the lone pairs of electrons from oxygen atoms 34. From the onset of the absorption of PEDOT‐MA and PProDOT‐MA, the bandgaps of the polymers were determined to be 1.73 and 1.82 eV, respectively, which are the same as those reported for substituted PEDOT and PProDOT 1.…”

mentioning

confidence: 99%

Solution Processable and Patternable Poly(3,4‐alkylenedioxythiophene)s for Large‐Area Electrochromic Films

Kim¹,

You²,

Kim³

et al. 2011

Advanced Materials

102

View full text Add to dashboard Cite

Conductivity‐controllable and photo‐patternable conductive polythiophenes are prepared by solution‐casting polymerization and applied to patterned electrochromic devices. A photofunctional group is introduced to thiophene derivatives for color tuning. This method and the resulting materials support the easy fabrication of electrochromic devices for large smart windows or flexible displays with designability and processability.

show abstract

Fast electrochromic polymers based on new poly(3,4-alkylenedioxythiophene) derivatives

Cited by 61 publications

References 11 publications

Electrochromic Systems and the Prospects for Devices

Electrochromic Systems and the Prospects for Devices

A Poly(3,4‐alkylenedioxythiophene) Electrochromic Variable Optical Attenuator with Near‐Infrared Reflectivity Tuned Independently of the Visible Region

Solution Processable and Patternable Poly(3,4‐alkylenedioxythiophene)s for Large‐Area Electrochromic Films

Contact Info

Product

Resources

About