Coordination bonding assembly, characterization and photophysical properties of lanthanide (Eu, Tb)/zinc centered hybrid materials through sulfide bridge

Two novel molecular sulfide bridges have been achieved through the modification of 4-mercaptobenzoic acid by two crosslinking reagents (3-methacryloyloxypropyl trimethoxysilane, 3-glycidoxypropyltrimethoxysilane). Then six kinds of lanthanide (Eu3+, Tb3+)/zinc organic–inorganic hybrid materials through the chemical bonds (coordination bond and covalent bond) have been assembled. All of these hybrid materials exhibit homogeneous microstructures, suggesting the occurrence of self-assembly of the inorganic network and organic units. Especially, the photophysical properties of these hybrid systems are studied in detail, which present three-color luminescence (blue for Zn2+, red for Eu3+ and green for Tb3+).