Dopamine: effect of concentration and pH on the electron emission. Reaction mechanisms
Dopamine (DA) in airfree, aqueous solution (pH 7.4; 37°C) is able to emit e(-)(aq) when electronically excited in its singlet state by monochromatic UV light (λ=254 nm; 4.85 eV/hν). The quantum yield Q(e(-)(aq)), was studied in dependence of DA concentration and pH of the media. The DA transients re...
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| Veröffentlicht in: | In vivo (Athens) 2012-01, Vol.26 (1), p.107-111 |
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| container_title | In vivo (Athens) |
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| creator | Getoff, Nikola Brenn, Eric Ying, Shaobin |
| description | Dopamine (DA) in airfree, aqueous solution (pH 7.4; 37°C) is able to emit e(-)(aq) when electronically excited in its singlet state by monochromatic UV light (λ=254 nm; 4.85 eV/hν). The quantum yield Q(e(-)(aq)), was studied in dependence of DA concentration and pH of the media. The DA transients resulting from the electron emission form products, which also have the ability to emit e(-)(aq), but with much lower yield. Since DA in the ground state can consume e(-)(aq), it is classified as an electron mediator. Some biological consequences based on the e(-)(aq) emission are mentioned. |
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Some biological consequences based on the e(-)(aq) emission are mentioned.</description><subject>Algorithms</subject><subject>Dopamine - chemistry</subject><subject>Electrons</subject><subject>Hydrogen-Ion Concentration</subject><subject>Models, Chemical</subject><subject>Molecular Structure</subject><subject>Oxidation-Reduction - radiation effects</subject><subject>Photolysis - radiation effects</subject><subject>Quantum Theory</subject><subject>Solutions - chemistry</subject><subject>Ultraviolet Rays</subject><subject>Water - chemistry</subject><issn>1791-7549</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo1kM1LxDAQxYMg7rr6L0hunir5atN4k_VjhQVB1GuZphO20iS1aQ_-9wZdT2-G95vh8U7ImmvDC10qsyLnKX0yVmnGxBlZCSE400Kuycd9HMH3AW8pOod2ptFRG4PFME8w9zFQCB0ddzRP8wEpDhma8oK-Tyn7N_QVwf6SHu0BQp98uiCnDoaEl0fdkPfHh7ftrti_PD1v7_bFmAPMBTCNXFproJWS1ULXXcnKSgrV8boS3DnNbAVdy1phpWGlU_kCa1Bt19bKyg25_vs7TvFrwTQ3OZXFYYCAcUmN4VLJujJVJq-O5NJ67Jpx6j1M381_FfIHJAFZcg</recordid><startdate>201201</startdate><enddate>201201</enddate><creator>Getoff, Nikola</creator><creator>Brenn, Eric</creator><creator>Ying, Shaobin</creator><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7X8</scope></search><sort><creationdate>201201</creationdate><title>Dopamine: effect of concentration and pH on the electron emission. 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| source | MEDLINE; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Algorithms Dopamine - chemistry Electrons Hydrogen-Ion Concentration Models, Chemical Molecular Structure Oxidation-Reduction - radiation effects Photolysis - radiation effects Quantum Theory Solutions - chemistry Ultraviolet Rays Water - chemistry |
| title | Dopamine: effect of concentration and pH on the electron emission. Reaction mechanisms |
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