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Volumn 112, Issue 51, 2008, Pages 16690-16700

Excited-state dynamics of 12 -apo-β-caroten-12 -al and 8 -apo-β-caroten-8 -al in supercritical CO2, N2O, and CF3H

Author keywords

[No Author keywords available]

Indexed keywords

ABSORPTION; ALUMINUM; BIOMECHANICS; CARBON DIOXIDE; CHARGE TRANSFER; DYNAMICS; EMISSION SPECTROSCOPY; ENERGY GAP; EXCITED STATES; ION EXCHANGE; ORGANIC COMPOUNDS; ORGANIC POLYMERS; ORGANIC SOLVENTS; QUANTUM THEORY; RELAXATION PROCESSES; RESPIRATORY MECHANICS; SINGLE CRYSTALS; SOLVENTS; SPECTRUM ANALYSIS; SULFUR COMPOUNDS;

EID: 58149175636     PISSN: 15206106     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp807086n     Document Type: Article
Times cited : (17)

References (56)
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    • For this, a minor rescaling of the relative signal amplitudes of the measurements at parallel and perpendicular configurations was necessary, due to slightly different experimental conditions, i.e, overlap of the two beams as well as pulse energies when rotating the polarizer
    • For this, a minor rescaling of the relative signal amplitudes of the measurements at parallel and perpendicular configurations was necessary, due to slightly different experimental conditions, i.e., overlap of the two beams as well as pulse energies when rotating the polarizer.
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    • For 12 C in scCO2, the change of temperature over 308-332 K at constant density (reduced density pr, p/pc, 1.36) resulted in a small shift of 164 cm-1, 2.5 nm, see Supporting Information Table S1 (e, Almost no thermochromic shift was observed for 12 C in scCF3H over the temperature range 308-333 K at constant density (pr, 1.70, see Supporting Information Table S1 (h, In the case of 8 C, thermochromic shifts of 224 cm-1, 4.1 nm) in scCO2 over the temperature range 309-333 K at the constant density pr, 1.29 (see Supporting Information Table S2 (e, and of 220 cm-1, 4.2 nm) in scCF3H at the constant density pr, 1.70 over the temperature range 308-334 K (see Supporting Information Table S2 h, were observed
    • r = 1.70 over the temperature range 308-334 K (see Supporting Information Table S2 (h)) were observed.
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    • A separation into two distinct populations might appear artificial from a physical standpoint and partly stems from the suggestive nature of the biexponential fit of the decay. We note that the decay of the transient absorption profiles in CF3H could also be well described by using a stretched-exponential term instead of the first two exponential terms in eq 7, leading to 1(t, A0, A1 exp(, t, t0)/t1]y+ A3 exp(-(t, t0, r3, 0.5(l, erf{(t, t0, √2σ), Here, the parameter Y (<1) in the first term merely describes the departure from monoexponential behavior. Such an approach (requiring one parameter less than eq 7) has been frequently used in the absence of a theoretical model to describe the relaxation of solute molecules, which are sampling different types of mieroenvironme
    • 0)/(√2σ)}). Here, the parameter Y (<1) in the first term merely describes the departure from monoexponential behavior. Such an approach (requiring one parameter less than eq 7) has been frequently used in the absence of a theoretical model to describe the relaxation of solute molecules, which are sampling different types of mieroenvironments within a solvent [Arzhantsev et al. J. Phys. Chem. B 2007, 111, 4978;
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    • 3 =-28% (compare the values in Supporting Information Table S3). Note that the parameter Y describing the stretched-exponential character of the relaxation is very similar at both pressures, emphasizing that only the overall time scale of the relaxation but not its character is changing.
    • 3 =-28% (compare the values in Supporting Information Table S3). Note that the parameter Y describing the stretched-exponential character of the relaxation is very similar at both pressures, emphasizing that only the overall time scale of the relaxation but not its character is changing.
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.