نتایج جستجو برای: gel chemistry
تعداد نتایج: 212056 فیلتر نتایج به سال:
This review is devoted to non-hydrolytic sol-gel chemistry. During the last 25 years, non-hydrolytic sol-gel (NHSG) techniques were found to be attractive and versatile methods for the preparation of oxide materials. Compared to conventional hydrolytic approaches, the NHSG route allows reaction control at the atomic scale resulting in homogeneous and well defined products. Due to these features...
The release of nitric oxide (NO) from polymers has proven to be highly effective at inhibiting platelet adhesion and thus enhancing the blood compatibility of medical implants. Micropatterning techniques were used to design surfaces that release NO while preserving the underlying substrate for other applications (e.g., sensors). Micropatterned NO-releasing substrates based on aminosilane-contai...
several samples of mesoporous silica were prepared via sol-gel chemistry in the presence of ctab as template with variation of stirring intensity and aging time, ratios of ctab/sio2 and nh4oh/h2o in synthesis mixture. effects of aging temperature, hydrothermal treatment and ter-butanol addition to the synthesis mixture on the textural properties of obtained samples were also studied. results of...
For the successful implementation of Distributed Drug Discovery (D(3)) (outlined in the accompanying Perspective), students, in the course of their educational laboratories, must be able to reproducibly make new, high quality, molecules with potential for biological activity. This article reports the successful achievement of this goal. Using previously rehearsed alkylating agents, students in ...
A hybrid approach based on laser texturing and surface coating for the combined modification of topography chemistry has been proposed to provide a versatile development functional surfaces. The experimental procedure comprised nanosecond pulsed AISI 304 stainless steel substrates followed by deposition thin (<1 µm) coatings with two different technologies, sol–gel PE-CVD, aim independently ...
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