Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 425, Issue -, Pages 110-117Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2014.03.047
Keywords
Amphiphilic block copolymer; Self-assembly; Micellar nanochannels; Water based gel electrolytes; Dye solar cell; SANS; SAXS
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Funding
- Department of Science and Technology, New Delhi, India [DST/TSG/PT/2008/23, SB/FT/CS-17V2011]
- UGC-DAE CSR, Mumbai, India [CRS-M-172]
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The preparation of ordered polymer gels from the amphiphilic block copolymers, Pluronic (R) F77, P123 and polyethylene glycol in the presence of ionic liquid, iodine and organic additives is presented. At 35%(w/w) concentration these copolymers (F77 and P123) self-assembled into cubic liquid crystalline phase in aqueous solution and characterized by using SAXS and AFM measurements. The effects of micellar aggregation formed by polymers on the ionic transport and triiodide diffusion have been studied by electro-chemistry and SANS experiments. The ionic migration or triiodide diffusion through these polymer gels is found to be affected by the PEO/PPO content in the polymer backbone. These gels were successfully employed as an electrolyte in a dye sensitized solar cell. A remarkable solar to electricity conversion efficiency and good stability was obtained using Pluronic (R) F77 based gel, which is attributed to its thermoreversible sol to gel transition. (C) 2014 Elsevier Inc. All rights reserved.
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