DC Field | Value | Language |
---|---|---|
dc.contributor.author | Bae, JaeYoung | ko |
dc.contributor.author | Kevan, L | ko |
dc.date.accessioned | 2013-03-03T17:42:20Z | - |
dc.date.available | 2013-03-03T17:42:20Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2001-12 | - |
dc.identifier.citation | MICROPOROUS AND MESOPOROUS MATERIALS, v.50, no.1, pp.1 - 12 | - |
dc.identifier.issn | 1387-1811 | - |
dc.identifier.uri | http://hdl.handle.net/10203/79733 | - |
dc.description.abstract | The photoionization of N-alkylphenothiazines (PCn where n = 1, 6, 10 and 18) in mesoporous silicoaluminophosphate (UHM-3) molecular sieves with three different pore sizes has been studied by electron spin resonance (ESR) at room temperature. N-alkylphenothiazines were synthesized with three alkyl chain lengths (n = 6, 10 and 18). Mesoporous calcined UHM-3 molecular sieves with three different pore sizes of 1.9, 2.9 and 3.8 nm were prepared with n-dodecyltrimethylammonium or n-hexadecyltrimethylammonium chlorides and with 1,3,5-trimethylbenzene (TMB) as an auxiliary organic additive. N-alkylphenothiazines were incorporated into these mesoporous silicoaluminophosphates by impregnation and were photoionized at room temperature to form stable N-alkylphenothiazine cation radicals (PCn+) whose photoyields were measured by ESR. The highest photoyields are obtained for PC6 in C-12-UHM-3 (1.9 nm pore), PC10 in C-16-UHM-3 (TMB/A1 = 1) (2.9 nm pore) and PC18 in C-16-UHM-3 (TMB/A1 = 3) (3.8 nm pore). The yield of PC18 increases with increasing pore size which correlates with faster decays of the photoproduced cation radicals in smaller pores. (C) 2001 Published by Elsevier Science B.V. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.subject | ELECTRON-SPIN-RESONANCE | - |
dc.subject | PHOTOINDUCED CHARGE SEPARATION | - |
dc.subject | DIHEXADECYL PHOSPHATE VESICLES | - |
dc.subject | LAMELLAR ALUMINOPHOSPHATES | - |
dc.subject | ECHO MODULATION | - |
dc.subject | SILICA-GEL | - |
dc.subject | DIOCTADECYLDIMETHYLAMMONIUM CHLORIDE | - |
dc.subject | PHOTOELECTRON TRANSFER | - |
dc.subject | SURFACTANT VESICLES | - |
dc.subject | ROOM-TEMPERATURE | - |
dc.title | Photoionization of N-alkylphenothiazines with different alkyl chain lengths in mesoporous silicoaluminophosphate molecular sieves with different pore sizes | - |
dc.type | Article | - |
dc.identifier.wosid | 000172607400001 | - |
dc.type.rims | ART | - |
dc.citation.volume | 50 | - |
dc.citation.issue | 1 | - |
dc.citation.beginningpage | 1 | - |
dc.citation.endingpage | 12 | - |
dc.citation.publicationname | MICROPOROUS AND MESOPOROUS MATERIALS | - |
dc.identifier.doi | 10.1016/S1387-1811(01)00407-3 | - |
dc.contributor.nonIdAuthor | Kevan, L | - |
dc.type.journalArticle | Review | - |
dc.subject.keywordAuthor | mesoporous silicoaluminophosphates | - |
dc.subject.keywordAuthor | alkylphenothiazines | - |
dc.subject.keywordAuthor | photoionization | - |
dc.subject.keywordAuthor | mesoporous oxide materials | - |
dc.subject.keywordPlus | ELECTRON-SPIN-RESONANCE | - |
dc.subject.keywordPlus | PHOTOINDUCED CHARGE SEPARATION | - |
dc.subject.keywordPlus | DIHEXADECYL PHOSPHATE VESICLES | - |
dc.subject.keywordPlus | LAMELLAR ALUMINOPHOSPHATES | - |
dc.subject.keywordPlus | ECHO MODULATION | - |
dc.subject.keywordPlus | SILICA-GEL | - |
dc.subject.keywordPlus | DIOCTADECYLDIMETHYLAMMONIUM CHLORIDE | - |
dc.subject.keywordPlus | PHOTOELECTRON TRANSFER | - |
dc.subject.keywordPlus | SURFACTANT VESICLES | - |
dc.subject.keywordPlus | ROOM-TEMPERATURE | - |
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