Systematic Studies of Hydroxyapatite/terpene Hybrid Microspheres: Natural Rosin-Based Phosphorus Sources and Chemical Structures of Coordination Compounds

Materials properties largely depend on their morphologies and chemical structures. We, thus, prepared hierarchical dandelion-like hydroxyapatite (HAP) hollow flower microspheres and incorporated terpene functional groups into HAP materials, using natural rosin-based organic phosphoric monoester as the phosphorous source. Based on our previous studies, we comprehensively investigate the effect of dehydroabietic acid-based phosphorous sources (mono-ester, di-ester and tri-ester) on the morphologies of HAP materials by exploring hydrolysis processes and electrostatic potential diagrams of organic phosphorous sources. Result shows that organic phosphorous sources play an important role in controlling the morphologies of HAP materials. More importantly, chemical structures of the possible molecular structure of coordination compounds in HAP/terpene hybrid microspheres are depicted by quantum-chemical calculations.