نتایج جستجو برای: diazonium salt
تعداد نتایج: 80389 فیلتر نتایج به سال:
A new nanocomposites series of polypyrrole/reduced graphene oxide (PPy/rGO) and covalently bonded with aryl 4-carboxybenzene diazonium salt (PPy/rGO-aryl-COOH) were prepared by simple one-step chemical oxidative synthesis. Spin coating technique was used to deposit the as-prepared on BOPET substrate for testing their chemiresistive sensitivity properties towards online detection (NO2) vapors at...
Reaction of a nucleobase with nitrosonium ion leads to its diazotization. Due to the instability,the nucleobase-diazonium assumingly falls in dediazotization and successive ring openingreactions. The resulting intermediate of the ring opening reaction is able to covalently cross-linkthe opposite strands of DNA. To examine this assumption for cytosine, some 4-amino-5-cyanopyrimidines were synthe...
Abstract In recent decades, direct C–H arylation has become a preferred tool for biaryl coupling over traditional cross-coupling methods owing to its operationally simple protocol, inherent atom and step economy, reduced metallic waste. Several elegant have been developed that offer the facile transformation of usually inert Csp2–H bonds into Csp2–Csp2 in single synthetic operation. Despite man...
A wireless magnetoelastic sensor has been developed for the determination of 2-naphthol (2-NAP) in human urine. This method is based on the precipitation of 2-NAP with diazonium salts produced by the diazo-reaction of sulfamethoxazole (SMZ) with nitrite under a weak alkaline condition, resulting in a descending of the resonance frequency of a wireless magnetoelastic sensor. The frequence shift ...
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