title: Facile synthesis of β-diketone alcohols for combined functionality: initiation, catalysis, and luminescence.
abstract: Primary alcohol-functionalized β-diketones (bdks) are successfully synthesized via facile one-step Claisen condensation between aromatic monoketones and ε-caprolactone (ε-CL). To demonstrate application potentials, these bdk alcohols are used to chelate with various Lewis acids, including Tb (III), Eu (III), and B (III). It is discovered that the resulting Tb (III) and Eu (III) diketonate complexes can serve as both catalysts and initiators for ring-opening polymerization (ROP) under solvent-free conditions, using lactide monomer as an example. The polylactides (PLAs) thus obtained exhibit luminescence properties characteristic of Tb (III) and Eu (III), respectively. On the other hand, boron-chelated diketone can initiate ROP of lactide in the presence of Sn(oct)2 , and affords a PLA material with dual-emission, i.e., fluorescence and room temperature phosphorescence. The synthesis described here represents a shortcut for the preparation of bdk-based macroligands and subsequent functional materials.
authors.affiliation: CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.
authors.forename: Xuepeng
authors.initials: X
authors.lastname: Zhang
authors.forename: Minxin
authors.initials: M
authors.lastname: Cui
authors.forename: Rui
authors.initials: R
authors.lastname: Zhou
authors.forename: Changle
authors.initials: C
authors.lastname: Chen
authors.forename: Guoqing
authors.initials: G
authors.lastname: Zhang
mesh_terms: D000438:Alcohols / Q000138:chemical synthesis* / Q000737:chemistry; D002384:Catalysis; D002625:Chemistry, Organic / Q000379:methods*; D007659:Ketones / Q000138:chemical synthesis* / Q000737:chemistry; D008024:Ligands; D049449:Luminescence; D009682:Magnetic Resonance Spectroscopy; D055620:Optical Phenomena; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000438:Alcohols; D007659:Ketones; D008024:Ligands; D011108:Polymers
keywords: catalysts; functionalization of polymers; initiators; luminescence; metal-polymer complexes