Cage effect in supercritical fluids and compressed gases in the photolysis of an asymmetrically substituted diazene
We studied the photolysis of (1-biphenyl-4-yl-1-methyl-ethyl)-tert-butyl diazene in supercritical CO2 and Xe, as well as in compressed Kr. The compound has good solubility in the mentioned fluids, allowing the photolysis measurements to be performed in CO2 at 1.4 K above Tc and at pressures as low a...
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2009
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| LEADER | 09166caa a22013337a 4500 | ||
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| 001 | PAPER-8773 | ||
| 003 | AR-BaUEN | ||
| 005 | 20230518203836.0 | ||
| 008 | 190411s2009 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-65649101837 | |
| 024 | 7 | |2 cas |a imide, 32323-01-6; (1-biphenyl-4-yl-1-methylethyl)-tert-butyl diazene; Biphenyl Compounds; Gases; Imides | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 030 | |a JPCAF | ||
| 100 | 1 | |a Hoijemberg, P.A. | |
| 245 | 1 | 0 | |a Cage effect in supercritical fluids and compressed gases in the photolysis of an asymmetrically substituted diazene |
| 260 | |c 2009 | ||
| 270 | 1 | 0 | |m Aramendia, P. F.; INQUIMAE, Departamento de Quimica Inorganica, Analitica y Quimica Fisica, Universidad de Buenos Aires, Pabellon 2, Ciudad Universitaria, 1428 Buenos Aires, Argentina |
| 506 | |2 openaire |e Política editorial | ||
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| 520 | 3 | |a We studied the photolysis of (1-biphenyl-4-yl-1-methyl-ethyl)-tert-butyl diazene in supercritical CO2 and Xe, as well as in compressed Kr. The compound has good solubility in the mentioned fluids, allowing the photolysis measurements to be performed in CO2 at 1.4 K above Tc and at pressures as low as 70 bar. We monitored relative cage effect after nanosecond laser pulses by measuring the absorbance at 320 nm (AAtf 0) corresponding to the total amount of out-of-cage 1-biphenyl-4-yl-1-methyl-ethyl radical (BME ·) produced after nitrogen loss of the diazene. In supercritical CO2 and Xe, isothermal values of AAtf 0 showed an increase-decrease behavior with increasing pressure at constant temperature, a typical feature of the transition from the solvent energy transfer to the friction controlled regimes. The comparison of the behavior of AAtf 0 in CO2 at reduced temperatures between 1.004 and 1.027, in Xe, and in Kr points to an absence of enhanced cage effect near the critical point. Compatibility with spectroscopic data is analyzed. © 2009 American Chemical Society. |l eng | |
| 593 | |a INQUIMAE, Departamento de Quimica Inorganica, Analitica y Quimica Fisica, Universidad de Buenos Aires, Pabellon 2, Ciudad Universitaria, 1428 Buenos Aires, Argentina | ||
| 593 | |a Institut für Physikalische Chemie, Georg-August Universität, Gottingen, Germany | ||
| 593 | |a UAQ, CNEA, UNSAM, Argentina | ||
| 593 | |a Departamento de Quimica Facultad de Ciencias Exactas, Fisicoquimicas y Naturales, Universidad Nacional de Rio Cuarto, 5800-Rio Cuarto, Argentina | ||
| 593 | |a Institut für Verbrennungstechnik, Deutsche Gesellschaft Für Luft- and Raumfahrt, Stuttgart, Germany | ||
| 690 | 1 | 0 | |a ABSORBANCE |
| 690 | 1 | 0 | |a CAGE EFFECT |
| 690 | 1 | 0 | |a COMPRESSED GAS |
| 690 | 1 | 0 | |a CONSTANT TEMPERATURE |
| 690 | 1 | 0 | |a CRITICAL POINTS |
| 690 | 1 | 0 | |a DIAZENE |
| 690 | 1 | 0 | |a ETHYL RADICALS |
| 690 | 1 | 0 | |a NANOSECOND LASER PULSE |
| 690 | 1 | 0 | |a NITROGEN LOSS |
| 690 | 1 | 0 | |a SPECTROSCOPIC DATA |
| 690 | 1 | 0 | |a SUPERCRITICAL CO2 |
| 690 | 1 | 0 | |a EFFLUENT TREATMENT |
| 690 | 1 | 0 | |a ENERGY TRANSFER |
| 690 | 1 | 0 | |a EQUATIONS OF STATE |
| 690 | 1 | 0 | |a KRYPTON |
| 690 | 1 | 0 | |a ORGANIC POLYMERS |
| 690 | 1 | 0 | |a PULSED LASER APPLICATIONS |
| 690 | 1 | 0 | |a SUPERCRITICAL FLUIDS |
| 690 | 1 | 0 | |a TECHNETIUM |
| 690 | 1 | 0 | |a PHOTOLYSIS |
| 690 | 1 | 0 | |a (1 BIPHENYL 4 YL 1 METHYLETHYL) TERT BUTYL DIAZENE |
| 690 | 1 | 0 | |a (1-BIPHENYL-4-YL-1-METHYLETHYL)-TERT-BUTYL DIAZENE |
| 690 | 1 | 0 | |a BIPHENYL DERIVATIVE |
| 690 | 1 | 0 | |a IMIDE |
| 690 | 1 | 0 | |a ABSORPTION |
| 690 | 1 | 0 | |a ARTICLE |
| 690 | 1 | 0 | |a CHEMISTRY |
| 690 | 1 | 0 | |a GAS |
| 690 | 1 | 0 | |a PHOTOLYSIS |
| 690 | 1 | 0 | |a SOLUBILITY |
| 690 | 1 | 0 | |a ABSORPTION |
| 690 | 1 | 0 | |a BIPHENYL COMPOUNDS |
| 690 | 1 | 0 | |a IMIDES |
| 690 | 1 | 0 | |a PHOTOLYSIS |
| 690 | 1 | 0 | |a SOLUBILITY |
| 650 | 1 | 7 | |2 spines |a XENON |
| 650 | 1 | 7 | |2 spines |a GASES |
| 700 | 1 | |a Zerbs, J. | |
| 700 | 1 | |a Japas, M.L. | |
| 700 | 1 | |a Chesta, C.A. | |
| 700 | 1 | |a Schroeder, J. | |
| 700 | 1 | |a Aramendia, P.F. | |
| 773 | 0 | |d 2009 |g v. 113 |h pp. 5289-5295 |k n. 18 |p J Phys Chem A |x 10895639 |t Journal of Physical Chemistry A | |
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| 856 | 4 | 0 | |u https://doi.org/10.1021/jp811390m |y DOI |
| 856 | 4 | 0 | |u https://hdl.handle.net/20.500.12110/paper_10895639_v113_n18_p5289_Hoijemberg |y Handle |
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