Silica passivation efficiency monitored by a surface-bound fluorescent dye
A new method for evaluating surface passivation of silicon surfaces using a strongly adsorbing and fluorescing perylenediimide (PDI) dye is reported. Silanes containing differing reactive groups delivering a trimethylsilyl moiety were investigated for their ability to passivate glass surfaces, both...
| Veröffentlicht in: | Langmuir : the ACS journal of surfaces and colloids. - 1992. - 24(2008), 16 vom: 19. Aug., Seite 8541-6 |
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| Format: | Online-Aufsatz |
| Sprache: | English |
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2008
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| Zugriff auf das übergeordnete Werk: | Langmuir : the ACS journal of surfaces and colloids |
| Schlagworte: | Journal Article |
| Zusammenfassung: | A new method for evaluating surface passivation of silicon surfaces using a strongly adsorbing and fluorescing perylenediimide (PDI) dye is reported. Silanes containing differing reactive groups delivering a trimethylsilyl moiety were investigated for their ability to passivate glass surfaces, both from solution and in the vapor phase, as a function of temperature and concentration. Among the silanizing agents used in this study were 1,1,1,3,3,3-hexamethyldisilazane ( HMDS), allyltrimethylsilane ( TMS-A), chlorotrimethylsilane ( TMS-Cl), N-(trimethylsilyl)imidazole ( TMS-Im), and N, N-dimethylaminotrimethylsilane ( TMS-DMA). Surface coverage was determined using fluorescence intensity. The highest surface coverage films were obtained on glass treated with HMDS vapor at 280 degrees C or with solutions of TMS-Im or TMS-DMA at 105 degrees C. These studies provide important insight into the optimal methods for surface passivation |
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| Beschreibung: | Date Completed 17.09.2008 Date Revised 13.08.2008 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1520-5827 |
| DOI: | 10.1021/la801343b |