Synthesis and Characterization of Heteroleptic Ru(II) Complexes Based on 4,4-Bis((E)-styryl)-2,2-bipyridine as Ancillary Ligand and Application for Dye-Sensitized Solar Cells
- Authors
- Lee, Jihoon; Seo, Jinhyung; Choi, Yong Rack; Oh, Hyunju; Huh, Jun Nyeong; Park, Byoungchoo; Tak, Jungae; Kim, Byeong Hyo
- Issue Date
- May-2018
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- dye-sensitized solar cells (DSSCs); Ru(II) polypyridyl complexes; phenanthroline; photosensitizer
- Citation
- HELVETICA CHIMICA ACTA, v.101, no.5
- Indexed
- SCIE
SCOPUS
- Journal Title
- HELVETICA CHIMICA ACTA
- Volume
- 101
- Number
- 5
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/150117
- DOI
- 10.1002/hlca.201800030
- ISSN
- 0018-019X
- Abstract
- Heteroleptic Ru(II) complexes were designed based on 4,4-bis((E)-styryl)-2,2-bipyridine (bsbpy) as an ancillary ligand for dye-sensitized solar cells (DSSCs), and those Ru(II) sensitizers, [Ru(L)(bsbpy)(NCS)(2)][TBA] (TBA; tetrabutylammonium), were synthesized according to a typical one-pot reaction of [RuCl2(p-cymene)](2) with the corresponding anchoring ligands (where L=4,4-dicarboxy-2,2-bipyridine (dcbpy), 4,4-bis((E)-carboxyvinyl)-2,2-bipyridine (dcvbpy), 4,7-dicarboxy-1,10-phenanthroline (dcphen), or 4,7-bis((E)-carboxyvinyl)-1,10-phenanthroline (dcvphen)). The new Ru(II) dyes, [Ru(L)(bsbpy)(NCS)(2)][TBA] that incorporated vinyl spacer(s) into ancillary and/or anchoring ligand displayed red-shifted bands over the overall UV/VIS region relative to the absorption spectra of N719. A combination of bsbpy ancillary and dcphen anchoring ligand showed the best result for the overall power conversion efficiency (); i.e., a DSSC fabricated with [Ru(dcphen)(bsbpy)(NCS)(2)][TBA] exhibited a power conversion efficiency () of 2.98% (compare to N719, 4.82%).
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