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Visible Spectrum of Titanium Dioxide

Xiujuan Zhuang, Anh Le and Timothy C. Steimle, Ramya Nagarajan and Varun Gupta, John P. Maier. (2010) Visible Spectrum of Titanium Dioxide. Physical Chemistry, Chemical Physics, 12 (45). pp. 15018-15028.

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Official URL: http://edoc.unibas.ch/dok/A6001801

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Abstract

The electronic spectrum in the region 17 500 cm−1 to 18 850 cm−1 of a cold molecular beam of TiO2 has been investigated using laser induced fluorescence (LIF) and mass-resolved resonance enhanced multi-photoionization (REMPI) spectroscopy. Bands at 18 412 cm−1, 18 470 cm−1 and 18 655 cm−1 were recorded at a resolution of 35 MHz, rotationally analyzed, and assigned as the Ã1B2 (0,1,2) ← [X with combining tilde]1A1 (0,0,0), Ã1B2 (1,0,0) ← [X with combining tilde]1A1 (0,0,0) and Ã1B2 (1,1,0) ← [X with combining tilde]1A1 (0,0,0) transitions. The dispersed fluorescence from the Ã1B2 (0,1,2) and Ã1B2 (1,0,0) levels were combined with previous results to produce an improved set of vibrational parameters for the [X with combining tilde]1A1 state. The optical Stark effect in the Ã1B2 (0,1,2) ← [X with combining tilde]1A1 (0,0,0) and Ã1B2 (1,0,0) ← [X with combining tilde]1A1 (0,0,0) bands were recorded and combined with earlier results for Ã1B2 (1,1,0) ← [X with combining tilde]1A1 (0,0,0) to determine the permanent electric dipole moment for these states. The origin and harmonic vibrational constants for the Ã1B2 state are determined to be: T000 = 17 593(5) cm−1, ω1 = 876(3) cm−1, ω2 = 184(1) cm−1, and ω3 = 316(2) cm−1. A normal coordinate analysis was performed and Franck–Condon factors calculated.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Physikalische Chemie (Maier)
UniBasel Contributors:Gupta, Varun and Nagarajan, Ramya and Maier, John Paul
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Royal Society of Chemistry
ISSN:1463-9076
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:05 Dec 2016 13:04
Deposited On:11 Oct 2012 15:25

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