Synthesis and characterization of fluorene and cyclopentadithiophene-based copolymers exhibiting broad absorption for photovoltaic devices

2011 ◽  
Vol 49 (5) ◽  
pp. 1248-1255 ◽  
Author(s):  
In Hwan Jung ◽  
Sun Hee Kim ◽  
Eunjae Jeong ◽  
Renqiang Yang ◽  
Kwanghee Lee ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Photovoltaic Devices ◽  
Broad Absorption

Synthesis and Characterization of an Anthracene-Based Low Band Gap Polymer for Photovoltaic Devices

2014 ◽  
Vol 14 (8) ◽  
pp. 6422-6426 ◽  
Author(s):  
In Hwan Jung ◽  
Hoyeon Kim ◽  
Wonho Lee ◽  
Byung Jun Jung ◽  
Han Young Woo ◽  
...  
Keyword(s):  
Band Gap ◽  
Synthesis And Characterization ◽  
Photovoltaic Devices ◽  
Low Band Gap ◽  
Low Band Gap Polymer

Synthesis, characterization and electrochemical properties of meso-thiocarboxylate-substituted porphyrin derivatives

2014 ◽  
Vol 18 (10n11) ◽  
pp. 967-974 ◽  
Author(s):  
Leandro M.O. Lourenço ◽  
João Resende ◽  
Bernardo A. Iglesias ◽  
Kelly Castro ◽  
Shirley Nakagaki ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Electrochemical Properties ◽  
Synthesis And Characterization ◽  
Free Rotation ◽  
Photovoltaic Devices ◽  
Porphyrin Derivatives ◽  
Rapid Formation ◽  
Selective Displacement ◽  
Potential Use

Considering the versatility of 5,10,15,20-tetrakis(pentafluorophenyl)porphyrin (TPPF20) to react with nucleophiles we highlight here the synthesis and characterization of several mono- and tetra-thiocarboxylate derivatives. The selective displacement of the para-fluorine groups in TPPF20 by thiocarboxylic acids demonstrates that TPPF20 is an ideal platform for the rapid formation of thiocarboxylate porphyrins. The optical and electrochemical features of the thiocarboxylate derivatives were also examined thinking on their potential use in photovoltaic devices. From their electrochemical characterization the following parameters were taken into account: (i) electronegative induced effect of the thiocarboxylate dyes owing the presence of the fluorine and sulfur atoms on the molecular structure of the porphyrin; and (ii) the free rotation and flexibility features that such S atom gives to the porphyrin relatively to the semiconductor.

Synthesis and characterization of guest-host azo dyes with broad absorption bands

1993 ◽  
Vol 14 (3) ◽  
pp. 763-771 ◽  
Author(s):  
A. M. Lackner ◽  
E. Sherman ◽  
S.-Y. Wong ◽  
S.-M. Wong
Keyword(s):  
Azo Dyes ◽  
Synthesis And Characterization ◽  
Absorption Bands ◽  
Broad Absorption
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