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| Content Provider | Springer Nature Link |
|---|---|
| Author | Li, Jiahui Yang, Jiaojiao Xu, Fujian Xu, Jiazhuang Yan, Dingxiang Chen, Chen Li, Jianshu |
| Copyright Year | 2012 |
| Abstract | A simple approach to tune the fluorescent properties of star polymers was reported via only adjusting the arm numbers. Atom transfer radical polymerization (ATRP) using β-CD-based initiators was utilized to synthesize star-shaped poly(N-vinyl carbazole) (star PVK) consisting of β-cyclodextrin (β-CD) core and different arm numbers (3, 7, and 14). The conversion ratio was nearly 100 % characterized by $^{1}$H-NMR. Fluorescent properties of star PVKs could be modulated by varying the arm number at the same mass concentration of fluorescent groups. Fluorescence intensity declined with the increase of arm number and displayed “sandwich-like excimer” emission rather than “higher-energy excimer” emission. The unique structure of star polymer might effectively inhibit the formation of “random coil”, which often happened in linear polymer systems. In addition, all of the star PVKs with different arm numbers had the same emission peak centered at 395 nm and excimer band at 420 nm, respectively, which differed from their linear counterparts and demonstrated that the intramolecular interaction was not dominant in this system. |
| Starting Page | 1 |
| Ending Page | 4 |
| Page Count | 4 |
| File Format | |
| ISSN | 10229760 |
| Journal | Journal of Polymer Research |
| Volume Number | 19 |
| Issue Number | 8 |
| e-ISSN | 15728935 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2012-07-28 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Atom transfer radical polymerization Fluorescence Star poly(N-vinyl carbazole) Characterization and Evaluation of Materials Industrial Chemistry/Chemical Engineering Polymer Sciences |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Materials Chemistry Polymers and Plastics |
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