DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, A | ko |
dc.contributor.author | Filler, MA | ko |
dc.contributor.author | Kim, Sehun | ko |
dc.contributor.author | Bent, SF | ko |
dc.date.accessioned | 2009-09-18T05:55:34Z | - |
dc.date.available | 2009-09-18T05:55:34Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2005-04 | - |
dc.identifier.citation | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.127, no.16, pp.6123 - 6132 | - |
dc.identifier.issn | 0002-7863 | - |
dc.identifier.uri | http://hdl.handle.net/10203/11326 | - |
dc.description.abstract | We have demonstrated the layer-by-layer growth, via a urea coupling reaction between two bifunctional molecules, ethylenediamine and 1,4-phenylene diisocyanate, to form an ultrathin film on Ge(100)-2 x 1 at room temperature under vacuum conditions. The initial adsorption and subsequent growth of each layer was studied with multiple internal reflection Fourier transform infrared (MIR-FTIR) spectroscopy. Ethylenediamine reacts with Ge(100)-2 x 1 to produce a surface-bound amine group which is available for additional reaction. Subsequent exposure of 1,4-phenylene diisocyanate leads to a spontaneous urea coupling reaction between the surface-bound amine and the highly reactive isocyanate functional group. Three bands at 1665, 1512, and 1306 cm(-1) are characteristic of a urea linkage and provide evidence of the coupling reaction. The coupling procedure can be repeated in a binary fashion to create covalently bound ultrathin films at room temperature, and in the present work, we demonstrate the successful growth of four layers. In addition, we have found that an initial exposure of 1,4-phenylene diisocyanate to Ge(l 00)-2 x 1 produces an isocyanate-functionalized surface which, upon exposure to ethylenediamine, also forms urea linkages. This layer-by-layer deposition method provides a strategy with which to design and produce precisely tailored organic materials at semiconductor interfaces. | - |
dc.description.sponsorship | Brain Korea 21 Project and the National R&D Project for NanoScience and Technology. KOSEF and the Center for Nanotubes and Nanostructured Composites and the Advanced Backbone IT Technology Development Project of the Ministry of Information and Communication. M.A.F. acknowledges support from the National Science Foundation in the form of a Graduate Research Fellowship. S.F.B. acknowledges financial support from the National Science Foundation (CHE 0245260). | en |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | SEMICONDUCTOR SURFACES | - |
dc.subject | ORGANIC-MOLECULES | - |
dc.subject | CYCLOADDITION CHEMISTRY | - |
dc.subject | SILICON(001) SURFACE | - |
dc.subject | SI(100)-2 X-1 | - |
dc.subject | ADSORPTION | - |
dc.subject | SELECTIVITY | - |
dc.subject | COMPETITION | - |
dc.subject | ATTACHMENT | - |
dc.subject | MONOLAYERS | - |
dc.title | Layer-by-layer growth on Ge(100) via spontaneous urea coupling reactions | - |
dc.type | Article | - |
dc.identifier.wosid | 000228602600077 | - |
dc.identifier.scopusid | 2-s2.0-17744363288 | - |
dc.type.rims | ART | - |
dc.citation.volume | 127 | - |
dc.citation.issue | 16 | - |
dc.citation.beginningpage | 6123 | - |
dc.citation.endingpage | 6132 | - |
dc.citation.publicationname | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | - |
dc.identifier.doi | 10.1021/ja042751x | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Kim, Sehun | - |
dc.contributor.nonIdAuthor | Kim, A | - |
dc.contributor.nonIdAuthor | Filler, MA | - |
dc.contributor.nonIdAuthor | Bent, SF | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | SEMICONDUCTOR SURFACES | - |
dc.subject.keywordPlus | ORGANIC-MOLECULES | - |
dc.subject.keywordPlus | CYCLOADDITION CHEMISTRY | - |
dc.subject.keywordPlus | SILICON(001) SURFACE | - |
dc.subject.keywordPlus | SI(100)-2 X-1 | - |
dc.subject.keywordPlus | ADSORPTION | - |
dc.subject.keywordPlus | SELECTIVITY | - |
dc.subject.keywordPlus | COMPETITION | - |
dc.subject.keywordPlus | ATTACHMENT | - |
dc.subject.keywordPlus | MONOLAYERS | - |
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