(1 of 9)Planar integrated systems of micro-supercapacitors (MSCs) and sensors are of profound importance for 3C electronics, but usually appear poor in compatibility due to the complex connections of device units with multiple mono-functional materials. Herein, 2D hierarchical ordered dual-mesoporous polypyrrole/graphene (DM-PG) nanosheets are developed as bi-functional active materials for a novel prototype planar integrated system of MSC and NH 3 sensor. Owing to effective coupling of conductive graphene and highsensitive pseudocapacitive polypyrrole, well-defined dual-mesopores of ≈7 and ≈18 nm, hierarchical mesoporous network, and large surface area of 112 m 2 g −1 , the resultant DM-PG nanosheets exhibit extraordinary sensing response to NH 3 as low as 200 ppb, exceptional selectivity toward NH 3 that is much higher than other volatile organic compounds, and outstanding capacitance of 376 F g −1 at 1 mV s −1 for supercapacitors, simultaneously surpassing single-mesoporous and non-mesoporous counterparts. Importantly, the bi-functional DM-PG-based MSC-sensor integrated system represents rapid and stable response exposed to 10-40 ppm of NH 3 after only charging for 100 s, remarkable sensitivity of NH 3 detection that is close to DM-PG-based MSC-free sensor, impressive flexibility with ≈82% of initial response value even at 180°, and enhanced overall compatibility, thereby holding great promise for ultrathin, miniaturized, body-attachable, and portable detection of NH 3 .
While
a number of highly luminescent copper(I) halide based hybrid
materials built on coordinate bonds (Cu–L; L = N, P, S-based
ligands) have been obtained, the poor structural stability largely
limited their commercialization. In contrast, according to the previous
studies, the ionic structures (L-free) are more stable than those
built on Cu–L coordinate bonds. However, the extremely weak
emission hinders their optical applications. Herein, we report a tetra-alkylammonium-cation-induced
strategy for the synthesis of stable and highly luminescent ionic
CuBr-based hybrid materials. It is interesting to find that the tetra-alkylammonium
cations with different chains could induce diverse CuBr-based anions.
Moreover, most of these CuBr-based hybrids are highly luminescent,
which makes them promising candidates as an alternative to phosphors
and with potential applications in sensing.
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