A σ,π-type monocarborane copper acetylide for regioselective 1,4-disubstituted 1,2,3-triazoles.

A σ,π-bis(copper) acetylide complex, (CBH-12-CC)Cu(PiPr) (2), enables the formation of regioselective 1,4-disubstituted 1,2,3-triazoles containing monocarborane anion [CBH] CuAAC with organic azides under mild conditions. This method achieves 1,2,3-triazolylated monocarboranes (3) in up to 97% yield, including a luminescent compound with optoelectronic potential.

Frame Transmission Efficiency-Based Cross-Layer Congestion Notification Scheme in Wireless Ad Hoc Networks.

Different from the traditional wired network, the fundamental cause of transmission congestion in wireless ad hoc networks is medium contention. How to utilize the congestion state from the MAC (Media Access Control) layer to adjust the transmission rate is core work for transport protocol design. However, recent works have shown that the existing cross-layer congestion detection solutions are too complex to be deployed or not able to characterize the congestion accurately.