نتایج جستجو برای: Amine functionalization
تعداد نتایج: 30046 فیلتر نتایج به سال:
Abstract Linear polyhydromethylsiloxane (PHMS) was functionalized with nitrogen-containing organic compounds: N -allylaniline (Naa), -allylcyclohexylamine (Nach), -allylpiperidine (Nap) and 4-vinylpyridine (4VP) via hydrosilylation reaction in the presence of Pt 0 complex (Karstedt’s catalyst) under mild conditions. Reaction course followed by FTIR spectroscopy final products were characterized...
Nanoscopic particles self-assembled from amphiphilic block copolymers have been developed over the past years for the preparation of various drug delivery systems. The biodegradable carriers made of polyethylene glycol (PEG)-polyester diblock copolymers emerged as the most adequate devices due to their prolonged circulation half-life in blood, their ability to bypass natural barriers, their red...
choline oxidase (chox) was chosen as a model enzyme for evaluating the performance of cnts’ functional groups for development of enzyme electrodes. cnts were functionalized with carboxylic acid, amine or amide groups. carboxylic acid, amine and amide functionalized cnts were obtained by acid treatment, ethylenediamine or tetraethylenepentamine chemically modification and ammonia plasma treatmen...
Functionalization of multiwalled carbon nanotubes (MWCNTs) with NH2 groups under a one pot reaction is studied. During the first step of the reaction, Cl and CHCl2 groups were attached to the surfaces of MWCNTs through an electrophilic addition reaction. In the second step of process, Cl atoms were replaced with NH2 and amino groups (ethylene diamine and but...
in this research, graphene was synthesized by chemical vapor deposition (cvd) method in atmosphere pressure (14.7 psi). different functionalization method was used for oxidizing of graphene such as acid and alkaline treatments. the functionalized graphene (fg) was characterized by ftir and raman spectroscopy. nanofluid with water and different concentration (0.05, 0.15 and 0.25 wt %) of fg were...
هدف اصلی این پروژه تحقیقاتی سنتز و بررسی خصوصیات دو سری از کمپلکس های باز شیف کبالت(iii) بود. برای انجام این کار، در مرحله ی اول لیگاند باز شیف بیس (پیرول-2-کربوکسی آلدهید)-3،1-دی ایمینو پروپان، bpd از طریق واکنش بین 2-پیرول کربوکسی آلدهید و 1،3-دی-ایمینو پروپان تهیه شد. در مرحله ی دوم کمپلکس coii(bpd) از واکنش بین لیگاند باز شیف و co(ch3coo)2.4h2o سنتز شد. در مرحله سوم، واکنش تحت هوادهی بین کم...
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