TY - JOUR
T1 - Surface-induced thermal decomposition of [Ru(dcbpyH)2-(CN) 2] on nanocrystalline TiO2 surfaces
T2 - Temperature-dependent infrared spectroscopy and two-dimensional correlation analysis
AU - Mee Jung, Young
AU - Park, Yeonju
AU - Sarker, Subrata
AU - Lee, Jae Joon
AU - Dembereldorj, Uuriintuya
AU - Joo, Sang Woo
PY - 2011/1
Y1 - 2011/1
N2 - Thermal degradation mechanism of the self-assembled thin films of [Ru(dcbpyH)2-(CN)2] (Ruthenium 505, R505) anchoring on TiO2 surfaces via its carboxylate group has been examined by temperature-dependent diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy. The CN stretching bands of R505 at 20002100 cm-1 appeared to change drastically at ≈140 °C on TiO2 surfaces, whereas a major CN peak at ∼2090 cm-1 disappeared at a much higher temperature above ≈250 °C in their solid states. Two-dimensional (2D) correlation analysis was introduced to explain the thermal desorption behaviors of the Ruthenium dye. Multiple peaks of the CN stretching vibrations are more clearly resolved in the 2D correlation analysis. More complicated features in the CN stretching vibrational spectra on TiO2 than those of the solid states suggest a substantial interaction of the CN groups with the TiO2 surfaces.
AB - Thermal degradation mechanism of the self-assembled thin films of [Ru(dcbpyH)2-(CN)2] (Ruthenium 505, R505) anchoring on TiO2 surfaces via its carboxylate group has been examined by temperature-dependent diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy. The CN stretching bands of R505 at 20002100 cm-1 appeared to change drastically at ≈140 °C on TiO2 surfaces, whereas a major CN peak at ∼2090 cm-1 disappeared at a much higher temperature above ≈250 °C in their solid states. Two-dimensional (2D) correlation analysis was introduced to explain the thermal desorption behaviors of the Ruthenium dye. Multiple peaks of the CN stretching vibrations are more clearly resolved in the 2D correlation analysis. More complicated features in the CN stretching vibrational spectra on TiO2 than those of the solid states suggest a substantial interaction of the CN groups with the TiO2 surfaces.
KW - [Ru(dcbpyH)-(CN)] (R505)
KW - Diffuse reflectance Fourier transform infrared spectroscopy
KW - Thermal decomposition
KW - TiO
KW - Two-dimensional correlation spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=78149362488&partnerID=8YFLogxK
U2 - 10.1016/j.solmat.2010.05.008
DO - 10.1016/j.solmat.2010.05.008
M3 - Article
AN - SCOPUS:78149362488
SN - 0927-0248
VL - 95
SP - 326
EP - 331
JO - Solar Energy Materials and Solar Cells
JF - Solar Energy Materials and Solar Cells
IS - 1
ER -