Skip to Content
Merck
  • Ultrafast photo-induced charge transfer unveiled by two-dimensional electronic spectroscopy.

Ultrafast photo-induced charge transfer unveiled by two-dimensional electronic spectroscopy.

The Journal of chemical physics (2012-06-07)
Oliver Bixner, Vladimír Lukeš, Tomáš Mančal, Jürgen Hauer, Franz Milota, Michael Fischer, Igor Pugliesi, Maximilian Bradler, Walther Schmid, Eberhard Riedle, Harald F Kauffmann, Niklas Christensson
ABSTRACT

The interaction of exciton and charge transfer (CT) states plays a central role in photo-induced CT processes in chemistry, biology, and physics. In this work, we use a combination of two-dimensional electronic spectroscopy (2D-ES), pump-probe measurements, and quantum chemistry to investigate the ultrafast CT dynamics in a lutetium bisphthalocyanine dimer in different oxidation states. It is found that in the anionic form, the combination of strong CT-exciton interaction and electronic asymmetry induced by a counter-ion enables CT between the two macrocycles of the complex on a 30 fs timescale. Following optical excitation, a chain of electron and hole transfer steps gives rise to characteristic cross-peak dynamics in the electronic 2D spectra, and we monitor how the excited state charge density ultimately localizes on the macrocycle closest to the counter-ion within 100 fs. A comparison with the dynamics in the radical species further elucidates how CT states modulate the electronic structure and tune fs-reaction dynamics. Our experiments demonstrate the unique capability of 2D-ES in combination with other methods to decipher ultrafast CT dynamics.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Tetrabutylammonium hydroxide solution, 1.0 M in methanol
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium hydroxide solution, 40 wt. % in H2O
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium hydrogensulfate, 97%
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium cyanide, 95%
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium hydroxide solution, 53.5-56.5% in H2O
SKU
Pack Size
Availability
Price
Quantity
Supelco
Tetrabutylammonium hydroxide solution, ~40% in water, suitable for ion chromatography
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium cyanide, technical, ≥80%
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium hydroxide solution, technical, ~40% in H2O (~1.5 M)
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium perchlorate, ≥95.0% (T)
SKU
Pack Size
Availability
Price
Quantity
Supelco
Tetrabutylammonium perchlorate, for electrochemical analysis, ≥99.0%
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium phosphate monobasic solution, 1.0 M in H2O
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium azide
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium nitrate, 97%
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium bromide, ReagentPlus®, ≥99.0%
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium bromide solution, 50 wt. % in H2O
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium fluoride solution, 1.0 M in THF
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium iodide, reagent grade, 98%
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium bisulfate, puriss., ≥99.0% (T)
SKU
Pack Size
Availability
Price
Quantity
Supelco
Tetrabutylammonium bisulfate, suitable for ion pair chromatography, LiChropur, ≥99.0%
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium iodide, ≥99.0% (AT)
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium bisulfate solution, ~55% in H2O
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium chloride, ≥97.0% (NT)
SKU
Pack Size
Availability
Price
Quantity
Supelco
Tetrabutylammonium bisulfate solution, suitable for ion pair chromatography, LiChropur, concentrate, ampule
SKU
Pack Size
Availability
Price
Quantity
Supelco
Tetrabutylammonium iodide, suitable for ion pair chromatography, LiChropur, ≥99.0%
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium fluoride solution, 75 wt. % in H2O
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium phosphate monobasic, puriss., 99% (T)
SKU
Pack Size
Availability
Price
Quantity
Supelco
Tetrabutylammonium bromide, suitable for ion pair chromatography, LiChropur, ≥99.0%
SKU
Pack Size
Availability
Price
Quantity
Supelco
Tetrabutylammonium chloride, suitable for ion pair chromatography, LiChropur, ≥99.0%
SKU
Pack Size
Availability
Price
Quantity
Sigma-Aldrich
Tetrabutylammonium bromide, ACS reagent, ≥98.0%
SKU
Pack Size
Availability
Price
Quantity