Vietnam is in the process of industrialization, modernization,
many industrial parks and trade villages have sprung up, this has
released a large amount of inorganic and organic pollutants. Heavy
metals are considered to be very dangerous pollutants due to their high
toxicity and high bio-accumulation. Heavy metals like Cadmium,
Lead, Mercury, Silver are highly toxic, when accumulated in the
human body will cause diseases such as blood pressure, nervous
system, brain damage, liver, kidney, circulatory system, severe cases
can lead to death. Despite the state regulations on environmental
protection, there is no guarantee that heavy metals will be collected
and treated thoroughly and safely for the environment. Because of this,
environmental monitoring requires measuring instruments, probes
capable of detecting heavy metals at the trace level, thereby preventing
and treating environmental pollution. To contribute to the protection
of green, clean and beautiful living environment.
Conducting polymers are considered to be the next generation of
sensing materials being studied and used, and the trend is gradually
replacing older sensor materials by conductivity, selectivity and
responsiveness. Conducting polymers have been used to manufacture
converters to detect a wide range of gases such as NOx, CO, CO2,
NH3, solvents, alcohols, organic compounds and heavy metal ions.
The phenyl radical conducting polymers (polyaniline, poly(1.8-
diaminonaphthalene), poly(1.5-diaminonaphthalene)) containing rich
electron groups as -NH, -NH2 easily interact with heavy metal cations.
Thus, in order to use phenyl radical conducting polymers derivatives
as sensors, it is necessary to study the interaction between the
electrochemical activity, the structure of the polymer and the metal
cations. On this basis there are further studies such as improving the
sensitivity and selectivity of polymer films with heavy metal cations.2
From that point of view, the thesis aims to: “Synthesis, studying
properties of phenyl radical polymer film oriented to use as metal ion
sensor” as a research topic.