این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
Nanomedicine Journal، جلد ۴، شماره ۳، صفحات ۱۶۴-۱۶۹
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی The effect of graphite sources on preparation of Photoluminescent graphene nano-sheets for biomedical imaging
چکیده انگلیسی مقاله Objective(s): Graphene as two-dimensional (2D) materials have attracted wide attention in different fields such as biomedical imaging. Ultra-small graphene nano-sheets (UGNSs) have been designated as low dimensional graphene sheets with lateral dimensions less than few nanometres (≤ 500 nm) in one, two or few layers. Several studies have proven that the process of acidic exfoliation and oxidation is one of the most effective methods to synthesize low dimensional graphene sheets. The band gap of graphene can be changed through changing the reaction temperature resulting in different photoluminescent colors. The aim of our study is synthesis of multi-color photoluminescent UGNSs for biomedical imaging.Materials and Methods: Two different UGNSs were synthesized from two different graphite sources via acidic treatment with a mixture of sulfuric and nitric acids. The prepared UGNSs were characterized by UV-Vis, photoluminescent, Raman spectroscopy and scanning electron microscopy (SEM). The photoluminescence colors of the prepared UGNSs were detected under excitation wavelength of 470 nm using optical filters.Results: The results showed that the graphite primary source is a determinant factor in the synthesis of different UGNSs. While altering reaction temperature didn't significantly change the emission wavelengths; however it affected their photoluminescent emission intensity.Conclusion: Overall, nontoxic UGNSs synthesized by simple acidic treatment of graphite with different photoluminescent colors (green, yellow and red) can be a promising fluorescent probe for bioimaging.
کلیدواژه‌های انگلیسی مقاله
نویسندگان مقاله سروش موسس غفاری | soroush moasses ghafary
department of nanobiothechnology, university of tarbiat modares, tehran, iran

سازمان اصلی تایید شده: دانشگاه تربیت مدرس (Tarbiat modares university)

شادیه هاتمی | shadie hatamie
institute for nanoscience and nanotechnology inst , sharif university of technology,tehran, iran

سازمان اصلی تایید شده: دانشگاه صنعتی شریف (Sharif university of technology)

مریم نیکخواه | maryam nikkhah
department of nanobiothechnology, university of tarbiat modares, tehran, iran

سازمان اصلی تایید شده: دانشگاه تربیت مدرس (Tarbiat modares university)

سامان حسین خانی | saman hosseinkhani
department of biochemistry, faculty of biological sciences, tarbiat modares university, tehran, iran

سازمان اصلی تایید شده: دانشگاه تربیت مدرس (Tarbiat modares university)

نشانی اینترنتی http://nmj.mums.ac.ir/article_8957.html
فایل مقاله دریافت فایل مقاله
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده مقاله پژوهشی
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات