The First Example of a Polymer-Crystal–Organic-Dye Composite Material: The Clathrate Phase of Syndiotactic Polystyrene with Azulene


  • This work was financially supported by the Ogasawara Foundation for the Promotion of Science and Technology. The authors thank Idemitsu Petrochemical Co., Ltd. for supplying the sPS samples. One of the authors YU expresses his special thanks for the Center of Excellence (21COE) Program: ‘Creation of Integrated EcoChemistry of Osaka University’.


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Organic dye molecules have been included in the crystalline regions of syndiotactic polystyrene (sPS) by soaking clathrate or glass films of sPS in an azulene solution containing a plasticizer (see Figure). Highly oriented films, in which the dye molecules are oriented, are easily obtained by applying a similar procedure to an oriented glass sample.