کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
822883 906812 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Physical chemical characterization of DNA–SWNT suspensions and associated composites
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Physical chemical characterization of DNA–SWNT suspensions and associated composites
چکیده انگلیسی

Suspensions of DNA–SWNT composites have been prepared as part of an ongoing study of individualized single-walled carbon nanotubes (SWNTs) using chemically modified or unmodified single-stranded DNA as the surfactant. We report optical absorption, photoluminescence (PL) and Raman spectra which are used to distinguish the types of carbon nanotubes (CNTs) present in the suspensions. Pyrenyl groups appended to the DNA affect the appearance of absorption and photoluminescence spectra. Furthermore, TEM has been used to characterize DNA–SWNT composites deposited on grids and flushed with a volatile aqueous buffer. Electron micrographs provide preliminary evidence for helical wrapping of single strand DNA (ssDNA) around individual CNTs and thin ropes of CNTs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 67, Issue 5, April 2007, Pages 916–921
نویسندگان
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