Nonlinear Transient Spectroscopy Using Four-Wave Mixing with Broad-Bandwidth Laser Beams

Апанасевич, П. А.; Kozich, V.; Vodchitz, A. I.; Kontsevoy, B. L.

doi:10.1007/978-3-642-77194-1_13

Cited by 2 publications

(2 citation statements)

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“…Studies involving multiplexed RIKES using a broad-band probe are limited. 22 , 26 , 45 − 48 To the best of our knowledge, this is the first study demonstrating the application of FRIKES to the structure and dynamics of photoexcited states in a dilute molecular system.…”

Section: Introductionmentioning

confidence: 89%

“…Commonly RIKES has been explored in the form of optical heterodyne-detected Raman-induced Kerr effect spectroscopy (OHD-RIKES), using single-wavelength time-domain excitation followed by Fourier transform analysis to obtain depolarized Raman spectra which are limited to the low-frequency region (1–600 cm –1 ). − This technique has been applied to study various processes, including the dynamics of pure and mixed solvents, − electrolyte solutions, ionic liquids, − polymer solutions, and peptides and globular protein at high concentrations. Studies involving multiplexed RIKES using a broad-band probe are limited. ,,− To the best of our knowledge, this is the first study demonstrating the application of FRIKES to the structure and dynamics of photoexcited states in a dilute molecular system.…”

Section: Introductionmentioning

confidence: 99%

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Ultrafast Charge Transfer in Nickel Phthalocyanine Probed by Femtosecond Raman-Induced Kerr Effect Spectroscopy

et al. 2014

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The recently developed technique of femtosecond stimulated Raman spectroscopy, and its variant, femtosecond Raman-induced Kerr effect spectroscopy (FRIKES), offer access to ultrafast excited-state dynamics via structurally specific vibrational spectra. We have used FRIKES to study the photoexcitation dynamics of nickel(II) phthalocyanine with eight butoxy substituents, NiPc(OBu)8. NiPc(OBu)8 is reported to have a relatively long-lived ligand-to-metal charge-transfer (LMCT) state, an essential characteristic for efficient electron transfer in photocatalysis. Following photoexcitation, vibrational transitions in the FRIKES spectra, assignable to phthalocyanine ring modes, evolve on the femtosecond to picosecond time scales. Correlation of ring core size with the frequency of the ν10 (asymmetric C–N stretching) mode confirms the identity of the LMCT state, which has a ∼500 ps lifetime, as well as that of a precursor d-d excited state. An even earlier (∼0.2 ps) transient is observed and tentatively assigned to a higher-lying Jahn–Teller-active LMCT state. This study illustrates the power of FRIKES spectroscopy in elucidating ultrafast molecular dynamics.

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