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A metal‐free tetra(aryl)porphyrin derivative, modified by a N,N′‐bis(2‐hydroxyethyl)‐1,6,7,12‐tetrachloroperylene‐3,4:9,10‐bis(dicarboximide) group, namely TBPP–PDI (1), has been designed, synthesized, and characterized. TBPP–PDI is employed as a resonance‐energy‐transfer (RET) based sensor for the detection of Pb2+, based on a process involving the donor PDI and the acceptor porphyrin. Binding with...
We report the low-loss chalcogenide waveguides for bio sensing in the mid-infrared (MIR), which consisted of a Ge11. 5As24Se64.5 rib waveguide core on a magnesium fluoride crystalline substrate. The losses were < 2dB/cm from 3000-1050cm-1 (3.2 -- 9.5µm).
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