Formation of RNA/dendrimer complexes between various RNA molecules and PAMAM dendrimers was studied using atomic force microscopy. Our results demonstrate that effective construction of stable nanoscale and uniform RNA/dendrimer complexes depends critically on the size of the RNA molecule, the dendrimer generation and the charge ratio between the dendrimer and the RNA. Larger RNA molecules, higher generations of dendrimers and larger dendrimer-to-RNA charge ratios lead to the formation of stable, uniform nanoscale RNA/dendrimer complexes. These findings provide new insights in developing dendrimer systems for RNA delivery.
Highly Conductive Electrolytes Derived from Nitrile Solvents
作者:Qiang Ma、Braja K. Mandal
DOI:10.1149/2.0701507jes
日期:——
A series of new low molecular weight nitrile solvents has been designed and synthesized for secondary lithium battery electrolytes. Lithium bis(trifluoromethylgulonyl) imide (LiTFSI) salt concentration and temperature dependent ionic conductivity, electrochemical stability and thermal properties have been studied. The best ionic conductivity, 12.9 x 10(-3) S/cm at 25 degrees C, was observed with 1.60 M LiTFSI in 2,2-bis(hydroxymethyl)-1,3-propanedi-2-ethylcyano solvent. Both electrolytes and neat solvents displayed freezing point below -80 degrees C. (C) 2015 The Electrochemical Society. All rights reserved.