Abstract
A titanium phosphonate cluster with the formula of [Ti4(μ3-O)(OiPr)5(μ-OiPr)3(PhPO3)3]·thf was synthesized. Titanium tetraisopropoxide and phenylphosphonic acid were mixed in tetrahydrofuran and subjected to hydrolysis to provide a white crystal of titanium phosphonate. The titanium phosphonate was mixed with poly(methyl methacrylate) (PMMA) to form a hybrid film. The titanium phosphonate content in the resulting mixture was <30 wt% and the obtained material was yellow. The degradation temperature increased by ~30 °C owing to the hybridization of the titanium phosphonate cluster with PMMA. In another approach, titanium phosphonate was mixed with poly(vinyl alcohol) (PVA) to form a hybrid film. The titanium phosphonate content in the mixture was <50 wt% and the obtained material was colorless. Isopropyl alcohol was formed in this reaction, suggesting the formation of a titanium phosphonate/PVA hybrid by the reaction of PVA with an isopropoxy group in titanium phosphonate.
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Acknowledgements
This work was supported by a Grant-in-Aid for Scientific Research on Innovative Areas ‘New Polymeric Materials Based on Element-Blocks (No. 2401)’ (JSPS KAKENHI Grant Number JP24102008). This work was supported by JSPS KAKENHI Grant Number JP16K17951.
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Hayami, R., Wada, K., Sagawa, T. et al. Preparation and properties of organic–inorganic hybrid polymer films using [Ti4(μ3-O)(OiPr)5(μ-OiPr)3(PhPO3)3]·thf. Polym J 49, 223–228 (2017). https://doi.org/10.1038/pj.2016.108
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DOI: https://doi.org/10.1038/pj.2016.108
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