نتایج جستجو برای: cetyltrimethylammonium bromide

تعداد نتایج: 17435  

Journal: :Electrophoresis 2005
Rita S Dias Roine Svingen Bodil Gustavsson Björn Lindman Maria G Miguel Björn Akerman

We use agarose gel electrophoresis to characterize how the monovalent catioinic surfactant cetyltrimethylammonium bromide (CTAB) compacts double-stranded DNA, which is detected as a reduction in electrophoretic DNA velocity. The velocity reaches a plateau at a ratio R = 1.8 of CTAB to DNA-phosphate charges, i.e., above the neutralization point, and the complexes retain a net negative charge at ...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2007
Chenxu Yu Leo Varghese Joseph Irudayaraj

A chemical procedure to replace the cetyltrimethylammonium bromide (CTAB) cap on gold nanorods (GNRs) fabricated through seed-mediated growth with organothiol compounds [3-animo-5-mercapto-1,2,4-triazole (AMTAZ) and 11-mercaptoundecaonic acid (MUDA)] was developed to reduce the cytotoxity of GNRs and facilitate further biofunctionalization. Compared to phosphatidylcholine (PC) modification, our...

Journal: :The Journal of biological chemistry 1998
E P Rogakou D R Pilch A H Orr V S Ivanova W M Bonner

When mammalian cell cultures or mice are exposed to ionizing radiation in survivable or lethal amounts, novel mass components are found in the histone H2A region of two-dimensional gels. Collectively referred to as gamma, these components are formed in vivo by several procedures that introduce double-stranded breaks into DNA. gamma-Components, which appeared to be the only major novel component...

Journal: :Small 2021

Gold nanorods (AuNRs) have attracted a great deal of attention due to their potential for use in wide range biomedical applications. However, production typically requires the relatively toxic cationic surfactant cetyltrimethylammonium bromide (CTAB) leading continued demand protocols detoxify them vivo In this study, robust and facile protocol displacement CTAB from surface AuNRs using phospho...

2012
Nabakumar Pramanik Sudip Chakraborty

The present research attempt consists in the development of mesoporous hydroxyapatite using inexpensive ingredients using cetyltrimethylammonium bromide (CTAB) as template through a chemical-based hydrothermal method. Wide angle X-ray diffraction (XRD) reveals the formation of pure single-phased hydroxyapatite particles. Fourier transform infrared absorption spectroscopy (FTIR) and electron dif...

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