Side-Chain Effects on the Conductivity, Morphology, and Thermoelectric Properties of Self-Doped Narrow-Band-Gap Conjugated Polyelectrolytes

2014 ◽  
Vol 136 (39) ◽  
pp. 13478-13481 ◽  
Author(s):  
Cheng-Kang Mai ◽  
Ruth A. Schlitz ◽  
Gregory M. Su ◽  
Daniel Spitzer ◽  
Xiaojia Wang ◽  
...  
Keyword(s):  
Band Gap ◽  
Thermoelectric Properties ◽  
Narrow Band ◽  
Side Chain ◽  
Conjugated Polyelectrolytes

Facile Doping of Anionic Narrow-Band-Gap Conjugated Polyelectrolytes During Dialysis

2013 ◽  
Vol 125 (49) ◽  
pp. 13112-13116 ◽  
Author(s):  
Cheng-Kang Mai ◽  
Huiqiong Zhou ◽  
Yuan Zhang ◽  
Zachary B. Henson ◽  
Thuc-Quyen Nguyen ◽  
...  
Keyword(s):  
Band Gap ◽  
Narrow Band ◽  
Conjugated Polyelectrolytes

Synthesis and photovoltaic properties of fluorene-based copolymers with narrow band-gap units on the side chain

2010 ◽  
Vol 46 (12) ◽  
pp. 2365-2371 ◽  
Author(s):  
Qiong Hou ◽  
Xin Xu ◽  
Ting Guo ◽  
Xianghua Zeng ◽  
Suilian Luo ◽  
...  
Keyword(s):  
Band Gap ◽  
Narrow Band ◽  
Side Chain ◽  
Photovoltaic Properties

Electrical properties of doped conjugated polyelectrolytes with modulated density of the ionic functionalities

2015 ◽  
Vol 51 (99) ◽  
pp. 17607-17610 ◽  
Author(s):  
Cheng-Kang Mai ◽  
Tomoya Arai ◽  
Xiaofeng Liu ◽  
Stephanie L. Fronk ◽  
Gregory M. Su ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Band Gap ◽  
Functional Groups ◽  
Narrow Band ◽  
Water Soluble ◽  
Conjugated Polyelectrolytes

We report the synthesis of a series of water soluble anionic narrow band-gap conjugated polyelectrolytes with a varied density of the ionic functional groups.

Synthesis and Properties of Two Cationic Narrow Band Gap Conjugated Polyelectrolytes

2013 ◽  
Vol 135 (11) ◽  
pp. 4163-4166 ◽  
Author(s):  
Zachary B. Henson ◽  
Yuan Zhang ◽  
Thuc-Quyen Nguyen ◽  
Jung Hwa Seo ◽  
Guillermo C. Bazan
Keyword(s):  
Band Gap ◽  
Narrow Band ◽  
Conjugated Polyelectrolytes

Synthesis and Photovoltaic Properties of Fluorene-Based Copolymers with Thiophene Heterocycle on the Side Chain

2011 ◽  
Vol 383-390 ◽  
pp. 7677-7681
Author(s):  
Qiong Hou ◽  
Xiang Hua Zeng ◽  
Xin Xu ◽  
Ting Guo ◽  
Hong Yu Zhen ◽  
...  
Keyword(s):  
Band Gap ◽  
Open Circuit Voltage ◽  
Narrow Band ◽  
Power Conversion ◽  
Open Circuit ◽  
Side Chain ◽  
Photovoltaic Properties ◽  
Coupling Methods ◽  
Electrode Interface ◽  
Hetero Cycle

High molecular weight, readily soluable copolymer was prepared from 9,9-di (2-thienyl-hexyl) fluorene (TF) 2,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9,9-di octyl fluorene and narrow band gap comonomer 2,3-dimethyl- 5,8-(5-bromo)-dithien-2-yl-quinoxalines (DTQU) using pallad- ium catalyzed Suzuki coupling methods. To compare the copolymer to this without thiophene in the C9 side chain of fluorene, the copolymer from DOF and DTQU was synthesized. The electrochemical, optical and photovoltaic properties of the copolymers were studied. The absorption spectra of the copolymers measured in thin films display two absorption peaks. The power conversion efficiency achieved in the device configuration ITO/PEDT/FT- DTQU:PCBM (1:2)/Al is 0.85% with open-circuit voltage (Voc) 0.8V. Further improvement by manipulating polymer/electrode interface and further investigation of more polyfluorene copolymers with narrow band gap aryl-hetero cycle units on the side chain is in progress.

Narrow band gap conjugated polyelectrolytes for photothermal killing of bacteria

2015 ◽  
Vol 3 (37) ◽  
pp. 7340-7346 ◽  
Author(s):  
Guangxue Feng ◽  
Cheng-Kang Mai ◽  
Ruoyu Zhan ◽  
Guillermo C. Bazan ◽  
Bin Liu
Keyword(s):  
Band Gap ◽  
Mammalian Cells ◽  
Narrow Band ◽  
Conjugated Polyelectrolytes

We report the demonstration of antimicrobial conjugated polyelectrolytes (CPEs) with high NIR absorbance for selective and efficient photothermal killing of bacteria over mammalian cells.

Thermoelectric Properties of the cubic AgPb10SbTe12

2003 ◽  
Vol 793 ◽  
Author(s):  
Kuei-Fang Hsu ◽  
Sim Loo ◽  
Wei Chen ◽  
Ctirad Uher ◽  
Tim Hogan ◽  
...  
Keyword(s):  
Solid State ◽  
Band Gap ◽  
Carrier Concentration ◽  
Thermoelectric Properties ◽  
Power Factor ◽  
Solid State Reaction ◽  
Narrow Band ◽  
Thermoelectric Measurements

ABSTRACTAgPb10SbTe12 is one member of the cubic family of materials AgPbmSbTem+2, which adopts NaCl structure where Ag, Pb and Sb atoms occupy the Na site and Te atoms occupy the Cl site. Ingots of this compound were prepared by a solid state reaction for thermoelectric measurements. AgPb10SbTe12 is a narrow band gap semiconductor with Eg∼0.26 eV. In order to optimize the ZT of this member, compositions with deficiency of Ag and Bi-substitution were examined and found to exhibit enhanced power factor at 300 K. The Bi-substituted ingot had ZT∼0.39 at 300 K and ZT∼0.68 at 400 K. Carrier concentration and the mobility measurements are reported.

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