N749 Black Dye


250 mg

Order Code: M2001A1
Not in stock

N749, [(C4H9)4N]3[Ru(Htcterpy)(NCS)3], also referred to as "black dye", was developed for the widest range spectral sensitisation of wide band-gap oxide semiconductors (like titanium dioxide up to wavelengths beyond 800nm).  N749 black dye is a ruthenium complex, in which the ruthenium center contains one terpyridine ligand substituted with three carboxyl groups and three thiocyanato ligands

Despite its lower absorption extinction coefficient, a certified conversion efficiency of 11.1 % was achieved by employing a high-haze TiO2 electrode.

General Information

Full name Tris(N,N,N-tributyl-1-butanaminium)[[2,2′′6′,2′′-terpyridine]-4,4′,4′′-tricarboxylato(3-)-N1,N1′,N1′′]tris(thiocyanato-N)hydrogen ruthenate
Synonyms N749 Dye, Black dye, Ruthenium 620
Chemical formula C69H117N9O6RuS3
Molecular weight 1365.98
CAS number 359415-47-7
HOMO / LUMO HOMO = -5.2 eV, LUMO = -3.8 eV
Solubility Ethanol or acetonitrile/tert-butanol (v/v = 1)
Classification / Family Transition metal complex, Ruthenium complex, Bipyridyl ligands, Energy materials, Dye-sensitized solar cells DSSC) materials, Donor materials, OPV materials.
n749 dye
Chemical structure of N749 Dye; Chemical formula: C69H117N9O6RuS3

Product Details

Purity  >95%
Melting point No data available
Appearance Dark green powder

MSDS Documentation

N749 Black Dye MSDSN749 Black Dye MSDS Sheet

Literature and Reviews

  1. Engineering of Efficient Panchromatic Sensitizers for Nanocrystalline TiO2-Based Solar Cells, M. K. Nazeeruddin et al., J. Am. Chem. Soc., 123 (8), 1613–1624 (2001); DOI: 10.1021/ja003299u.
  2. Acetonitrile Solution Effect on Ru N749 Dye Adsorption and Excitation at TiO2 Anatase Interface, Y. Tateyama et al., J. Phys. Chem. C, 118 (30), 16863–16871 (2014); DOI: 10.1021/jp5004006.
  3. Protonated Carboxyl Anchor for Stable Adsorption of Ru N749 Dye (Black Dye) on a TiO2 Anatase (101) Surface, K. Sodeyama et al., J. Phys. Chem. Lett., 3 (4), 472–477 (2012); DOI: 10.1021/jz201583n.
  4. Selective positioning of organic dyes in a mesoporous inorganic oxide film, K. Lee et al., Nat. Mater., 8, 665-671 (2009); doi:10.1038/nmat2475.
  5. Significant Efficiency Improvement of the Black Dye-Sensitized Solar Cell through Protonation of TiO2 Films, Z. Wang et al., Langmuir, 21 (10), 4272–4276 (2005); DOI: 10.1021/la050134w.

To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.