Spermine induced reversible collapse of deoxyribonucleic acid-bridged nanoparticle-based assemblies
نویسندگان
چکیده
منابع مشابه
Magnetic Nanoparticle Assemblies
This chapter provides an introduction to the fundamental physical ideas and models relevant to the phenomenon of magnetic hysteresis in nanoparticle assemblies. The concepts of single-domain particles and superparamagnetism are discussed. The mechanisms of magnetization by coherent rotation and the role of temperature in the gradual decay of magnetization are analyzed in the framework of simple...
متن کاملReversible switching of structural and plasmonic properties of liquid-crystalline gold nanoparticle assemblies.
Hybrid materials built of spherical gold nanoparticles with three different sizes covered with (pro)mesogenic molecules have been prepared. Small-angle X-ray diffraction studies showed that after thermal annealing most of the obtained materials formed long-range ordered assemblies. Variation of the (pro)mesogenic ligand architecture enabled us to achieve a switchable material, which could be re...
متن کاملReversible formation of gold nanoparticle-surfactant composite assemblies for the preparation of concentrated colloidal solutions.
We have developed a simple method for the preparation of nearly mono-dispersed stable gold colloids with a fairly high concentration using a two step procedure. First we synthesize citrate capped gold nanoparticles and then exchange the citrate ions with triethyleneglycolmono-11-mercaptoundecylether (EGMUDE). This leads to the immediate precipitation and formation of composite assemblies. The g...
متن کاملThe reversible denaturation of deoxyribonucleic acid-dependent ribonucleic acid polymerase of Escherichia coli.
RNA polymerase core and holoenzyme isolated from Escherichia coli have been denatured and reconstituted in high yield (70 to 100%). Ultracentrifugation studies and measurement of tryptophan fluorescence indicate that the reconstituted enzyme has a structure similar to that of the native enzyme. The reconstituted holoenzyme transcribes T7 DNA as efficiently as the native holoenzyme. RNA synthesi...
متن کاملA Model Based Method for Tomographic Reconstructions of Nanoparticle Assemblies
Small angle X-ray scattering is a primary tool for resolving the crystal structures of self-assembled nanoparticle superlattices [1]. However, it is not quite informative when periodic lattices are broken into clusters due to their inhomogeneity. Therefore, it is desirable to develop a method to rapidly reconstruct the three-dimensional architecture of cluster ensembles in real space. Conventio...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nano Research
سال: 2017
ISSN: 1998-0124,1998-0000
DOI: 10.1007/s12274-017-1641-0