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OXIGENO SINGLETE [1 record]
Record 1 - internal organization data 2011-11-23
Record 1, English
Record 1, Subject field(s)
- Chemistry
Record 1, Main entry term, English
- singlet oxygen
1, record 1, English, singlet%20oxygen
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A highly reactive, diamagnetic excited state of dioxygen that rapidly decays with the emission of visible light to the paramagnetic (triplet) ground state. 1, record 1, English, - singlet%20oxygen
Record number: 1, Textual support number: 1 CONT
Singlet oxygen is highly reactive and is thought to be involved in the oxidative killing of ingested microorganisms by neutrophils; it is produced spontaneously during the respiratory burst by spontaneous reactions of hydrogen peroxide with superoxide and hypochlorite ions. 1, record 1, English, - singlet%20oxygen
Record 1, French
Record 1, Domaine(s)
- Chimie
Record 1, Main entry term, French
- oxygène singulet
1, record 1, French, oxyg%C3%A8ne%20singulet
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Forme excitée de l'oxygène ordinaire, composée d'eau oxygénée et d'eau de javel. 2, record 1, French, - oxyg%C3%A8ne%20singulet
Record number: 1, Textual support number: 1 CONT
L'oxygène singulet, 02, est une forme excitée de l'oxygène ordinaire : c'est une molécule d'oxygène dont on a réussi à «déplacer» momentanément l'un des électrons, ce qui la rend moins stable et donc susceptible de réagir plus facilement avec d'autres molécules. Ainsi, l'oxygène singulet est un oxydant à la fois plus puissant et plus sélectif que son homologue ordinaire. Toutefois, comme pour toutes les molécules excitées, l'accroissement de réactivité n'est pas le seul avantage que présente l'oxygène singulet : dans certaines circonstances, en effet, il est possible de faire revenir l'oxygène singulet dans son état ordinaire plutôt que de le faire réagir avec d'autres molécules, et ce retour à l'état fondamental s'accompagne d'une émission de lumière. En fait, c'est la propriété la plus originale des molécules à l'état excité : ce sont des sources potentielles de lumière. 3, record 1, French, - oxyg%C3%A8ne%20singulet
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Química
Record 1, Main entry term, Spanish
- oxígeno singulete
1, record 1, Spanish, ox%C3%ADgeno%20singulete
correct, masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
- oxígeno singlete 2, record 1, Spanish, ox%C3%ADgeno%20singlete
correct, masculine noun
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 OBS
El oxígeno singulete es una especie no radical del oxígeno que contiene un exceso de energía con respecto al estado fundamental. 1, record 1, Spanish, - ox%C3%ADgeno%20singulete
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