کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9594564 1507969 2005 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Metal deposition onto thiol-covered gold: Platinum on a 4-mercaptopyridine SAM
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Metal deposition onto thiol-covered gold: Platinum on a 4-mercaptopyridine SAM
چکیده انگلیسی
In this study we describe details of a new technique that allows to deposit metal on top of a self-assembled monolayer (SAM). Monoatomic high platinum islands were formed on a 4-mercaptopyridine SAM on Au(1 1 1) by first immersing the SAM-covered gold electrode in an aqueous solution of K2PtCl4 without potential control to allow Pt(II) ions to form a complex with the pyridine nitrogen. The complexed Pt(II) ions were then reduced electrochemically to Pt(0) after transferring the electrode to a Pt(II) ion-free solution. Upon reduction, monoatomic high Pt islands were observed in STM, the total coverage depending on the time for complexation. Ex situ angle-resolved XPS studies reveal that the Pt islands indeed reside on top of the SAM.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 590, Issues 2–3, 1 October 2005, Pages 146-153
نویسندگان
, , , , , , , ,