کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
703508 1460817 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photochemical attachment of amine-layers on H-terminated undoped single crystalline CVD diamonds
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
Photochemical attachment of amine-layers on H-terminated undoped single crystalline CVD diamonds
چکیده انگلیسی

The initial nucleation and growth characteristics of amine layers photochemically attached from 10-amino-dec-1-ene molecules protected with tri-fluoroacetic acid group to H-terminated undoped single crystal CVD diamond surfaces are characterized by tapping and contact mode atomic force microscopy (AFM) and scanning tunneling microscopy (STM) with nanometer resolution. The diamond is atomically flat which allows attributing variations of tunneling currents in STM to amine grafted surface areas. Island formation and growth of islands with increasing photochemical attachment time is revealed by these experiments. This results support the growth model, where hydrogen cleavage reactions from the diamond surface by amine molecules bonded to diamond is the major growth mechanism. These reactions might be initiated by UV light illumination of pyrolysis of organic peroxides in the presence of the adsorbate, which are proposed to break H–C bonds to create surface dangling bonds. It occurs at the periphery of islands which gives rise to island growth.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Diamond and Related Materials - Volume 17, Issues 7–10, July–October 2008, Pages 1376–1379
نویسندگان
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