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Very Low Band Gap Thiadiazoloquinoxaline Donor-Acceptor Polymers as Multi-tool Conjugated Polymers

Timothy Steckler (Institutionen för kemi- och bioteknik, Polymerteknologi) ; Patrik Henriksson (Institutionen för kemi- och bioteknik, Polymerteknologi) ; S. Mollinger ; Angelica Lundin (Institutionen för kemi- och bioteknik, Polymerteknologi) ; A. Salleo ; Mats R. Andersson (Institutionen för kemi- och bioteknik, Polymerteknologi)
Journal of the American Chemical Society (0002-7863). Vol. 136 (2014), 4, p. 1190-1193.
[Artikel, refereegranskad vetenskaplig]

Here we report on the synthesis of two novel very low band gap (VLG) donor-acceptor polymers (E-g <= 1 eV) and an oligomer based on the thiadiazoloquinoxaline acceptor. Both polymers demonstrate decent ambipolar mobilities, with P1 showing the best performance of similar to 10(-2) cm(2) V-1 s(-1) for p- and n-type operation. These polymers are among the lowest band gap polymers (less than or similar to 0.7 eV) reported, with a neutral lambda(max) = 1476 nm (P2), which is the farthest red-shifted lambda(max) reported to date for a soluble processable polymer. Very little has been done to characterize the electrochromic aspects of VLG polymers; interestingly, these polymers actually show a bleaching of their neutral absorptions in the near-infrared region and have an electrochromic contrast up to 30% at a switching speed of 3 s.

Nyckelord: FIELD-EFFECT TRANSISTORS, LIGHT-EMITTING-DIODES, SOLAR-CELLS, PERFORMANCE, PHOTOVOLTAICS, ELECTROCHROMISM, DEVICES, DESIGN



Denna post skapades 2014-03-17.
CPL Pubid: 195126

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Polymerteknologi (2005-2014)

Ämnesområden

Kemi

Chalmers infrastruktur