The Front Cover picture summarizes the main features of novel boron
acac complexes designed as efficient two-photon solid state emitters. These complexes, although formally non-centrosymmetric, present a two-photon signature typical of electronic quadrupoles. More information can be found in the Full Paper by C. Monnereau and co-workers on
page 2128 in Issue 14, 2016 (DOI:
10.1002/cphc.201600178.