title: A new family of heteroleptic ruthenium(II) polypyridyl complexes for sensitization of nanocrystalline TiO2 films.
abstract: Two new heteroleptic ruthenium(II) photosensitizers that contains 2,2';6,2''-terpyridine with extended π-conjugation with donor groups, a 4,4'-dicarboxylic acid-2,2'-bipyridine anchoring ligand and a thiocyanate ligand have been designed, synthesized and fully characterized by CHN, mass spectrometry, UV-vis and fluorescence spectroscopies and cyclic voltammetry. The new sensitizers have either 3,5-di-tert-butyl phenyl (m-BL-5) or triphenylamine (m-BL-6) groups, where the molar extinction coefficient of both the sensitizers is higher than the analogous ruthenium dyes. Both the sensitizers were tested in dye-sensitized solar cells using two different redox electrolytes.
authors.affiliation: Nanomaterials Laboratory, Inorganic & Physical Chemistry Division, Indian Institute of Chemical Technology, Hyderabad, 500607, India. giribabu@iict.res.in
authors.forename: Lingamallu
authors.initials: L
authors.lastname: Giribabu
authors.forename: Takeru
authors.initials: T
authors.lastname: Bessho
authors.forename: Mareedu
authors.initials: M
authors.lastname: Srinivasu
authors.forename: Challuri
authors.initials: C
authors.lastname: Vijaykumar
authors.forename: Yarasi
authors.initials: Y
authors.lastname: Soujanya
authors.forename: Veeranagari Gopal
authors.initials: VG
authors.lastname: Reddy
authors.forename: Paidi Yella
authors.initials: PY
authors.lastname: Reddy
authors.forename: Jun-Ho
authors.initials: JH
authors.lastname: Yum
authors.forename: Michael
authors.initials: M
authors.lastname: Grätzel
authors.forename: Mohammad Khaja
authors.initials: MK
authors.lastname: Nazeeruddin