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231223s2005 xx ||||| 00| ||eng c |
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|a pubmed24n0529.xml
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|a (DE-627)NLM15870214X
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|a (NLM)16262354
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Lee, Byoungchul
|e verfasserin
|4 aut
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|a Poly(thieno[3,4-b]thiophene)-poly(styrene sulfonate)
|b a low band gap, water dispersible conjugated polymer
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|c 2005
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 04.05.2007
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|a Date Revised 02.11.2005
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Herein we report the oxidative chemical polymerization of thieno[3,4-b]thiophene (T34bT) using several different oxidants including ferric sulfate, ammonium persulfate, and hydrogen peroxide in the presence of poly(styrenesulfonic acid) in water and properties of the resulting poly(thieno[3,4-b]thiophene)-poly(styrenesulfonic acid) (PT34bT-PSS) dispersion. The PT34bT-PSS is rendered a colloidal dispersion in water with a particle size diameter ranging between 180 and 220 nm depending on the oxidant used for polymerization. PT34bT-PSS films have band gaps of ca. 1 eV (1260 nm) as determined by the onset of the pi to pi transition from the vis-NIR spectrum with absorption maxima ranging from 1.4 eV (912 nm) to 1.7 eV (724 nm). The neutral and oxidized forms of PT34bT-PSS prepared from ferric sulfate dispersed in water were blue and lime green, respectively, whereas the neutral and oxidized forms of PT34bT-PSS prepared from ammonium persulfate and hydrogen peroxide were blue and blue-green, respectively. Spectral properties of the PT34bT-PSS dispersion can be tuned by the combination of oxidants. PT34bT-PSS films showed ca. 100% cation dominant ion transport behavior as determined by electrochemical gravimetry with each charge-discharge cycle and the doping level of the polymer was calculated to be 26%. Electrical conductivities for these polymers were found to be dependent on chemical oxidants used and varied from 10(-2) to 10(-4) S/cm
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|a Journal Article
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|a Seshadri, Venkataramanan
|e verfasserin
|4 aut
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|a Sotzing, Gregory A
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 21(2005), 23 vom: 08. Nov., Seite 10797-802
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:21
|g year:2005
|g number:23
|g day:08
|g month:11
|g pages:10797-802
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|a GBV_ILN_721
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|a AR
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|d 21
|j 2005
|e 23
|b 08
|c 11
|h 10797-802
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