Discovery of NLO Semiorganic (C5H6ON)+(H2PO4)−: Dipole Moment Modulation and Superior Synergy in Solar-Blind UV Region

cation governs the optical anisotropy, whereas the synergy of the organic and inorganic moieties dominates the SHG process. Our discovery points out a new path for the rational design of high performance semiorganic materials that require an acentric structure.