A well-known property of superhydrophobic surfaces, such as an array of hydrophobic nanoposts, is to allow only limited surface contact of a liquid to the tips of the nanoposts. Herein we demonstrate that material deposition from solution, whether solid precipitation, surface adsorption or colloidal adhesion in static system, or dynamic "writing", can be limited to these specific areas of the s...

One of the most significant challenges facing the biomimetic synthesis of materials is achieving the requisite level of dimensional and spatial control. Typical reaction conditions for biomimetic silica synthesis allow for continued growth and ripening leading to the formation of larger nanospheres on the order of 200-600 nm in diameter. Herein, we have used polyamidoamine and polypropylenimine...

Interactions between three hexacationic arene ruthenium metallaprisms, [(p-cymene)6Ru6(tpt)2(dhnq)3](6+), [(p-cymene)6Ru6(tpt)2(dhbq)3](6+) and [(p-cymene)6Ru6(tpt)2(oxa)3](6+), and a series of human proteins including human serum albumin, transferrin, cytochrome c, myoglobin and ubiquitin have been studied using NMR spectroscopy, mass spectrometry and circular dichroism spectroscopy. All data ...

Positively charged gold nanoparticles (+)AuNPs can adsorb onto the negatively charged surface of single-stranded DNA (ssDNA) or double-stranded DNA (dsDNA). Herein, long-range dsDNA polymers could form based on the hybridization chain reaction (HCR) of two hairpin probes (H1 and H2) by using miRNA-21 as an initiator. (+)AuNPs could adsorb onto the negatively charged surface of such long-range d...

San Francisco: W. Freeman Publishers. Miller BV and Lines R (1988) Recent advances in particle size measurement: a critical review. Critical Reviews in Analytical Chemistry 20(2): 75}116. Oglesby S Jr and Nichols GB (1978)Electrostatic Precipitation. New York: Marcel Dekker Inc. Provder T (ed.) (1998) Particle Size Distribution III, Assessment and Characterization.ACS Symposium Series 693, ACS....

......................................................................................... 4 ACKNOWLEDGEMENTS ....................................................................... 6 LIST OF TABLES ............................................................................... 11 LIST OF FIGURES ............................................................................. 13 LIST OF ABBREVIATIO...

Study of protoplasts, lysed protoplasts, and cells treated with lysozyme in the absence of osmotic stabilizer suggested that the alkaline phosphatase (EC 3.1.3.1.) of Bacillus subtilis is located in the protoplasmic membrane. Cytochemical evidence in support of this view is presented. The enzyme protein was strongly bound to the membrane structure and could not be solubilized by a number of tre...

Obtaining global hydrogen/deuterium (H/D) exchange data on proteins is an important first step in amide proton exchange experiments. Important information such as the mode of exchange, the cooperativity of folding/unfolding reactions, and the effects of ligand binding can be readily obtained in global exchange experiments. Many interesting biological systems are complexes containing both protei...

Dimensional measurements on nano-objects by atomic force microscopy (AFM) require samples of safely fixed and well individualized particles with a suitable surface-specific particle number on flat and clean substrates. Several known and proven particle preparation methods, i.e., membrane filtration, drying, rinsing, dip coating as well as electrostatic and thermal precipitation, were performed ...

PURPOSE To develop a simple method to extract the whole apolipoproteins (apo) including apoA-I in native high density lipoproteins (HDLs) and prepare discoidal Tanshinone IIA-loaded reconstituted HDL (TA-rHDLs) as a dual functional drug delivery system with plaque-site target and therapeutic promises in atherosclerotic lesions. METHODS A method based on isoelectric precipitation coupled with ...