We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Star poly(4-vinylpyridine)s using dendritic ATRP initiators: Synthesis, electrolyte property and performance in dye sensitized solar cell.
- Authors
Gopinath, A.; Sathiyaraj, S.; Sultan Nasar, A.
- Abstract
The G0 and G1 polyurethane dendrimers terminated with 3-12 atom transfer radical polymerization (ATRP) initiators were prepared using single and dual functional ATRP reagents and their structures were confirmed using FT-IR, H-NMR, HR-MS and SEC-MALLS techniques. 4-Vinylpyridine was polymerized using the G1 dendritic initiators to obtain six- and twelve-arm star poly(4-vinylpyridine)s (STAR-P1 and STAR-P2). The absolute molecular weight and PDI of star polymers were in the order of 10 and 1.23-1.24 respectively. Hydrolysis leading to degradation of inner polyurethane core of the star polymers yielded more narrow dispersed poly(4-vinylpyridine) chains and the SEC-MALLS data of these chains confirm the accurate control on number of arms. Both of the polymers were doped with KI/I along with N3-dye to work as efficient polymer electrolytes for dye sensitized solar cell (DSSC). The increment in the conductivity of doped STAR-P1 was very significant and reached 2.415 mS/m from 0.0066 mS/m of dopant salt. The current-voltage characteristics of these doped polymer electrolytes measured under simulated sun light with AM 1.5 at 40 mW/cm yielded energy conversion efficiency (η) of 5.13% and 1.90% for STAR-P1 and STAR-P2 respectively and these values also significantly high compared to 1.09% corresponds to current-voltage curve of the device fabricated without the polymers.
- Subjects
ELECTRIC properties of polymers; POLYPYRIDINES; DYE-sensitized solar cells; POLYMERIZATION; NUCLEAR magnetic resonance spectroscopy; HYDROLYSIS
- Publication
Journal of Polymer Research, 2017, Vol 24, Issue 8, p1
- ISSN
1022-9760
- Publication type
Article
- DOI
10.1007/s10965-017-1274-8