Tunable morphologies of rhenium complex‐containing polystyrene‐block‐poly(2‐vinylpyridine) aggregates |
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Authors: | Peng Xu Xin Ji Volker Abetz Shimei Jiang Jiacong Shen |
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Affiliation: | 1. State Key Laboratory of Supramolecular Structure and Materials, Jilin University, 2699 Qianjin Avenue, Changchun 130012, People's Republic of China;2. Institute of Polymer Research, GKSS Research Centre Geesthacht GmbH, 21502 Geesthacht, Germany |
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Abstract: | Polystyrene‐block‐poly(2‐vinylpyridine) (PS‐b‐P2VP) diblock copolymer was functionalized with luminescent chlorotricarbonyl rhenium (I) phenanthroline complex in the presence of silver perchlorate. The copolymer‐metal complex showed high sensitivity to the solvent system. Different morphologies and dimensions of the rhenium complex within nanosized micelles were controlled by changing the solvent systems. Core‐embedded rhenium complex within micelles appear by adding methanol, a poor solvent for the copolymer‐metal complex, to the solution of common solvent tetrahydrofuran (THF); the number of the core‐embedded rhenium complex and the scale of the micelles are strongly related to the addition of methanol. Moreover, a novel morphology of corona‐embedded rhenium complex micelles was prepared by dropping the original THF solution of copolymer‐metal complex into water at a low pH value. © 2008 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 46: 2047–2053, 2008 |
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Keywords: | amphiphilic block copolymers block copolymers corona‐embedded morphology nanoparticles phase separation rhenium complex |
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