A red ambient afterglow material with lifetime of 0.5 s and efficiency over 12.

γCbPhAP, a D-A dyad with γ-carboline as the D unit and 3-phenylacenaphtho[1,2-]pyrazine-8,9-dicarbonitrile as the A moiety and phosphorescence core, was designed and synthesized. The doping system of 1 wt% γCbPhAP in PMMA shows red ambient phosphorescence-dominated afterglow with long lifetime of 0.5 s and decent efficiency over 12%.

[Synthesis of [1,6-bis(L-alpha, beta-diaminopropionic acid) oxytocin].

A novel derivative of oxytocin containing nonprotein amino acid L-alpha, beta-diaminopropionic acid (L-Dap) was synthesized by 7+2 fragment combination in solution. N beta of all the amino acid necessary was protected by carbobenzoxy (Z) and N beta of L-Dap was protected by tert. -butoxycarbonyl (Boc) .