J 2001

Molecular Photochemical Thermometers. Investigation of Microwave Superheating Effects By Temperature Dependent Photochemical Processes

KLÁN, Petr, Jaromír LITERÁK and Stanislav RELICH

Basic information

Original name

Molecular Photochemical Thermometers. Investigation of Microwave Superheating Effects By Temperature Dependent Photochemical Processes

Authors

KLÁN, Petr (203 Czech Republic, guarantor), Jaromír LITERÁK (203 Czech Republic) and Stanislav RELICH (203 Czech Republic)

Edition

Journal of Photochemistry and Photobiology A: Chemistry, Amsterdam, The Netherlands, Elsevier Science, 2001, 1010-6030

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10401 Organic chemistry

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 1.038

RIV identification code

RIV/00216224:14310/01:00004367

Organization unit

Faculty of Science

Keywords (in Czech)

fotochemie; mikrovlny

Keywords in English

photochemistry; microwave
Změněno: 18/6/2009 11:55, prof. RNDr. Petr Klán, Ph.D.

Abstract

V originále

The first study of temperature dependent photochemical reactions in the microwave field is reported. Two different photochemical processes, temperature dependent solvent effects in the Norrish type II reaction and the photo-Fries reaction, were investigated under various thermal conditions including microwave heating. The former process exhibited a linear and reliable temperature dependence which served for the estimation of the microwave superheating effects in four different solvents. Their magnitudes were in a perfect agreement with the measured temperature enhancements. Thus, this photochemical system is proposed as a reliable molecular photochemical thermometer. The latter photochemical reaction studied showed a non-linear temperature dependence. All chemical changes in the microwave field were rationalized as a consequence of thermal effects.

Links

MSM 143100005, plan (intention)
Name: Strukturně-funkční vztahy biomolekul a jejich role v metabolismu
Investor: Ministry of Education, Youth and Sports of the CR, Biomolecular Structure-function Relationships and their role in the Metabolism