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N749 Black Dye

CAS Number 359415-47-7

DSSC Dyes & Electrolytes, Materials


Product Code M2001A1-100mg
Price £210 ex. VAT

Specifications | MSDS | Literature and Reviews


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 black dye chemical structure, 359415-47-7
Chemical structure of N749 Black 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.
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