Reversible Thermally Responsive and Luminescent Coil–Rod–Coil Triblock Copolymers
- 24 April 2007
- journal article
- research article
- Published by Wiley in Macromolecular Rapid Communications
- Vol. 28 (9) , 1003-1009
Abstract
A functional coil–rod–coil triblock copolymer containing a terfluorene unit as the rigid segment and poly(N‐isopropylacrylamide) (PNIPAAm) as the flexible block was successfully synthesized via reversible addition–fragmentation chain‐transfer (RAFT) polymerization using terfluorene‐based dithioester as the RAFT agent. The temperature‐responsive optical properties were investigated with the aid of dynamic light scattering and fluorescence techniques. Additionally, the relationship between the optical properties and the reversible phase transition of the doping system formed by blending the copolymer with tetraphenylporphine tetrasulfonic acid was studied. Above the lower critical solution temperature, the energy transfer efficiency decreased as a result of the globule–to–coil transition from PNIPAAm segments. The result indicates that these copolymers have a potential to be used as responsive fluorescent probes in facile detection of dye‐labeled biopolymers. magnified imageKeywords
This publication has 47 references indexed in Scilit:
- Rod−Coil Block Copolymers Incorporating Terfluorene Segments for Stable Blue Light EmissionThe Journal of Physical Chemistry B, 2005
- High Molecular Weight Dendronized Poly(fluorene)s with Peripheral Carbazole Groups: Synthesis, Characterization, and PropertiesMacromolecules, 2004
- Microscopic Morphology of Polyfluorene–Poly(ethylene oxide) Block Copolymers: Influence of the Block RatioAdvanced Functional Materials, 2004
- Influence of the Coil Block on the Properties of Rod−Coil Diblock Copolymers with Oligofluorene as the Rigid SegmentMacromolecules, 2004
- Synthesis and Characterization of Luminescent Rod–Coil Block Copolymers by Atom Transfer Radical Polymerization: Utilization of Novel End‐Functionalized Terfluorenes as MacroinitiatorsChemistry – A European Journal, 2003
- Synthesis of Conjugated−Ionic Block Copolymers by Controlled Radical PolymerizationMacromolecules, 2002
- Change in Solvation of Poly(N,N-diethylacrylamide) during Phase Transition in Aqueous Solutions As Observed by IR SpectroscopyMacromolecules, 2002
- Synthesis of Conjugated−Acidic Block Copolymers by Atom Transfer Radical PolymerizationMacromolecules, 2002
- End-Functionalization of Poly(2,7-fluorene): A Key Step toward Novel Luminescent Rod−Coil Block CopolymersMacromolecules, 1999
- Triarylphosphine and ethylene complexes of zerovalent nickel, palladium, and platinumJournal of the American Chemical Society, 1972