Femtosecond transient absorption spectroscopy of non-substituted photochromic spirocompounds

Antipin, S. A.; Petrukhin, A. N.; Гостев, Ф. Е.; Marevtsev, V. S.; Titov, A. A.; Barachevsky, V. A.; Strokach, Yu. P.; Sarkisov, O. M.

doi:10.1016/s0009-2614(00)01213-6

Cited by 61 publications

(42 citation statements)

References 13 publications

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“…Figure 3 displays the potential curve diagram, illustrating the generic scenario of photochromic transformations. 29 The reaction coordinate in this diagram is defined arbitrarily, representing the dominant wave-packet motion direction in the reaction-coordinate space. Our 800 nm pump radiation is TPA resonant with the transition between the ground electronic state S 0 of spiropyran (form-A spiropyran, Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The use of femtosecond pulses made it possible to study directly the ultrafast dynamics involved in photochromic processes 23,24,27,28 and to measure the reaction rates for the initial steps of photochromic reactions. 29 However, a fully consistent model of photochromic transformations in spiropyran molecules that would explain all the experimental observations, including the formation of transient products and different merocyanine isomers, is yet to be developed. Femtosecond time-resolved experiments are usually performed with spiropyran compounds in solutions or thin films.…”

Section: Introductionmentioning

confidence: 99%

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Femtosecond time‐resolved two‐photon absorption resonant four‐wave mixing in three‐dimensional spiropyran–PMMA samples

Konorov

Sidorov‐Biryukov

Bugár

et al. 2003

J Raman Spectroscopy

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The potential of four-wave mixing with two-photon absorption resonances for time-resolved studies of ultrafast processes triggering photochromic transformations in three-dimensional spiropyran-poly(methyl methacrylate) samples is demonstrated. Our experimental approach involves using 100 fs pulses of 800 nm fundamental radiation of a Ti:sapphire laser as a two-photon absorption resonant pump and 130 fs frequency-tunable pulses of an optical parametric amplifier as a time-delayed probe. The use of two-photon resonances allows strong one-photon absorption, typical of conventional pump-probe experiments, to be avoided, giving access to any point inside a 3D photochromic sample.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Femtosecond time‐resolved two‐photon absorption resonant four‐wave mixing in three‐dimensional spiropyran–PMMA samples

Konorov

Sidorov‐Biryukov

Bugár

et al. 2003

J Raman Spectroscopy

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“…In particular, methods for calculating nonradiative transition probabilities, ways and probabilities of interisomer conversions and chemical reactions [21][22][23][24][25] are being studied. In combination with modern potentials of spectral experiments with femtosecond time resolution (including the case of interisomer restructuring [2]) this makes active application of software for simulating the three-dimensional spectra of complex molecules developed here highly promising in qualitative and quantitative analysis.…”

Section: Discussionmentioning

confidence: 99%

Simulation of time-resolved vibronic spectra and the possibility of analyzing molecules with similar spectral properties

Astakhov

Баранов

2002

Opt. Spectrosc.

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Abstract-The possibility of using time-resolved vibronic spectroscopy for spectral analysis of mixtures of chemical compounds with similar optical properties, when traditional methods (based on stedy-state spectra) are inefficient, is demonstrated by using the method of computer simulation. The analysis is carried out by the example of molecules of a series of polyenes (butadiene, hexadiene, octatetraene, decapentaene, and decatetraene), their various cis-and trans-rotational isomers, and phenyl-substituted polyenes. Ranges of relative concentrations of molecules similar in their spectral properties, where reliable interpretation of time-resolved spectra of mixtures and both qualitative and quantitative analyses are possible, are determined. The use of computer simulation methods for optimizing full-scale experiments in femtosecond spectroscopy is shown to hold much promise. © 2002 MAIK "Nauka/Interperiodica".

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“…13 The first example concerns the studies of spironaph thooxazine photoisomerization. 5 In this type of mole cules two fragments lying in mutually perpendicular planes are linked by the spiro atom. In the course of photoisomerization the starting form А undergoes con version to the colored planar form В (Fig.…”

Section: Femtochemistry Of Elementary Reactionsmentioning

confidence: 99%

Femtosecond-technology-based chemical research

Sarkisov

2008

Russ Chem Bull

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Femtosecond transient absorption spectroscopy of non-substituted photochromic spirocompounds

Cited by 61 publications

References 13 publications

Femtosecond time‐resolved two‐photon absorption resonant four‐wave mixing in three‐dimensional spiropyran–PMMA samples

Femtosecond time‐resolved two‐photon absorption resonant four‐wave mixing in three‐dimensional spiropyran–PMMA samples

Simulation of time-resolved vibronic spectra and the possibility of analyzing molecules with similar spectral properties

Femtosecond-technology-based chemical research

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