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| Content Provider | Springer Nature Link |
|---|---|
| Author | Wan, XueJuan Xu, Jian Liu, ShiYong |
| Copyright Year | 2010 |
| Abstract | We report a facile synthesis method of dendrimer-like star-branched poly(N-isopropylacrylamide) (PNIPAM) via the combination of click chemistry and atom transfer radical polymerization (ATRP) by employing the arm-first approach. First, the α-azido-ω-chloro-heterodifunctionalized building block, N $_{3}$-PNIPAM-Cl (G0-Cl), was synthesized via ATRP by 3-azidopropyl 2-chloropropionate as the initiator. Taking advantage of click chemistry, the first generation (G1) of dendrimer-like star-branched PNIPAM, G1-(Cl)$_{3}$, was facilely prepared via the click coupling reaction between G0-Cl and tripropargylamine. For the construction of second generation (G2) dendrimer-like star-branched PNIPAM, G2-(Cl)$_{6}$, terminal chloride moieties of G1-(Cl)$_{3}$ were first converted to azide, and then reacted with excess tripropargylamine to give G1-(alkynyl)$_{6}$; G2-(Cl)$_{6}$ was subsequently prepared via click reaction between G1-(alkynyl)$_{6}$ and G0-Cl. Gel permeation chromatography (GPC) and matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry were employed to confirm the successful construction of dendrimer-like star-branched polymers. The unique thermal phase transition behavior of this dendrimer-like star-branched polymer in aqueous solutions was further investigated by turbidimetry and micro-differential scanning calorimetry (Micro-DSC). |
| Starting Page | 2520 |
| Ending Page | 2527 |
| Page Count | 8 |
| File Format | |
| ISSN | 16747291 |
| Journal | Science in China Series B: Chemistry |
| Volume Number | 53 |
| Issue Number | 12 |
| e-ISSN | 18691870 |
| Language | English |
| Publisher | SP Science China Press |
| Publisher Date | 2010-12-12 |
| Publisher Place | Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | dendrimer-like branched ATRP click chemistry Chemistry/Food Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry |
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