Effect of Alkyl Side-Chain Length on Photovoltaic Properties of Poly(3-alkylthiophene)/PCBM Bulk Heterojunctions

2009 ◽  
Vol 19 (20) ◽  
pp. 3300-3306 ◽  
Author(s):  
Abay Gadisa ◽  
Wibren D. Oosterbaan ◽  
Koen Vandewal ◽  
Jean-Christophe Bolsée ◽  
Sabine Bertho ◽  
...  
Keyword(s):  
Chain Length ◽  
Side Chain ◽  
Alkyl Side Chain ◽  
Bulk Heterojunctions ◽  
Photovoltaic Properties ◽  
Side Chain Length

scholarly journals Molecular Weight-Dependent Physical and Photovoltaic Properties of Poly(3-alkylthiophene)s with Butyl, Hexyl, and Octyl Side-Chains

Polymers ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 3440
Author(s):  
Thanh-Danh Nguyen ◽  
Van-Hai Nguyen ◽  
Jongwoo Song ◽  
Jongdeok An ◽  
Ngoc-Thuan Truong ◽  
...  
Keyword(s):  
Chain Length ◽  
Acid Methyl Ester ◽  
Gel Permeation Chromatography ◽  
Fullerene Derivative ◽  
Quantum Yields ◽  
Side Chain ◽  
Alkyl Side Chain ◽  
Scanning Calorimetry ◽  
Photovoltaic Properties ◽  
Side Chain Length

A series of poly-3-alkylthiophenes (P3ATs) with butyl (P3BT), hexyl (P3HT), and octyl (P3OT) sidechains and well-defined molecular weights (MWs) were synthesized using Grignard metathesis polymerization. The MWs of P3HTs and P3OTs obtained via gel permeation chromatography agreed well with the calculated MWs ranging from approximately 10 to 70 kDa. Differential scanning calorimetry results showed that the crystalline melting temperature increased with increasing MWs and decreasing alkyl side-chain length, whereas the crystallinity of the P3ATs increased with the growth of MWs. An MW-dependent red shift was observed in the UV–Vis and photoluminiscence spectra of the P3ATs in solution, which might be a strong evidence for the extended effective conjugation occurring in polymers with longer chain lengths. The photoluminescence quantum yields of pristine films in all polymers were lower than those of the diluted solutions, whereas they were higher than those of the phenyl-C61-butyric acid methyl ester-blended films. The UV–Vis spectra of the films showed fine structures with pronounced red shifts, and the interchain interaction-induced features were weakly dependent on the MW but significantly dependent on the alkyl side-chain length. The photovoltaic device performances of the P3BT and P3HT samples significantly improved upon blending with a fullerene derivative and subsequent annealing, whereas those of P3OTs mostly degraded, particularly after annealing. The optimal power conversion efficiencies of P3BT, P3HT, and P3OT were 2.4%, 3.6%, and 1.5%, respectively, after annealing with MWs of ~11, ~39, and ~38 kDa, respectively.

scholarly journals Comprehensive study on the impact of the cation alkyl side chain length on the solubility of water in ionic liquids

2015 ◽  
Vol 210 ◽  
pp. 264-271 ◽  
Author(s):  
Kiki A. Kurnia ◽  
Catarina M.S.S. Neves ◽  
Mara G. Freire ◽  
Luís M.N.B.F. Santos ◽  
João A.P. Coutinho
Keyword(s):  
Ionic Liquids ◽  
Chain Length ◽  
Side Chain ◽  
Alkyl Side Chain ◽  
Side Chain Length ◽  
The Impact ◽  
Comprehensive Study

Effect of alkyl side-chain length on the photophysical, morphology and photoresponse properties of poly(3-alkylthiophene)

2015 ◽  
Vol 48 (48) ◽  
pp. 485501 ◽  
Author(s):  
Wei-Long Xu ◽  
Xiao-Yu Yang ◽  
Fei Zheng ◽  
Han-Dong Jin ◽  
Xiao-Tao Hao
Keyword(s):  
Chain Length ◽  
Side Chain ◽  
Alkyl Side Chain ◽  
Side Chain Length

Polymerized ionic liquid diblock copolymers with long alkyl side-chain length

Polymer ◽  
2014 ◽  
Vol 55 (16) ◽  
pp. 3360-3369 ◽  
Author(s):  
Jacob R. Nykaza ◽  
Yuesheng Ye ◽  
Yossef A. Elabd
Keyword(s):  
Ionic Liquid ◽  
Chain Length ◽  
Diblock Copolymers ◽  
Side Chain ◽  
Alkyl Side Chain ◽  
Side Chain Length ◽  
Polymerized Ionic Liquid
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