All Organic Label-like Copper(II) Ions Fluorescent Film Sensors with High Sensitivity and Stretchability

Deep learning and analysis of heavy
metal concentration are very
crucial to our life, for it plays an essential role in both environmental
and human health. In this paper, we developed a new Cu (II) ions sensor
made by all organic material with bending and stretching properties.
The new sensor consists of chlorophyll-a extracted from fresh leaves
of Common Garcinia, plant fiber and with the use of PDMS as a substrate.
Fluorescence spectra study shows that chlorophyll-a is significantly
much more sensitive to Cu (II) ions than any other heavy metal ions
and the device sensitivity outperforms all the Cu (II) ions sensors
ever reported. The result fully shows the selectivity of chlorophyll-a
toward Cu (II) ions. Bending and stretching tests show that the sensor
has an outstanding durability, which can be used to develop accompanying
applications, such as real-time sampling and the analysis of Cu (II)
concentration specified in athlete’s sweat or patients with
brain death and Parkinson’s disease.