Abstract
Polymerization-induced self-assembly (PISA) is a widely used technique for the synthesis of nanoparticles with various morphologies including spheres, worms, and vesicles. The development of a PISA formulation based on reversible addition-fragmentation chain transfer (RAFT) aqueous emulsion polymerization offers considerable advantages such as enhanced rate of polymerization, high conversion and environmentally friendly conditions. However, this formulation has typically produced spheres as opposed to worms and vesicles. Herein, we report the formation of vesicle morphology by increasing the RAFT end-group hydrophobicity of the macromolecular chain transfer agent or manipulating the radical initiator concentration used in the aqueous emulsion polymerization PISA formulation. Additionally, decreasing the molecular weight of the hydrophobic polystyrene domain in these vesicles leads to the formation of worms. This work demonstrates that RAFT end-group hydrophobicity and radical initiator concentration are key parameters which can be exploited to enable access to sphere, worm, and vesicle morphologies via the RAFT aqueous emulsion polymerization.
| Original language | English |
|---|---|
| Pages (from-to) | 1013-1019 |
| Number of pages | 7 |
| Journal | ACS Macro Letters |
| Volume | 6 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 19 Sep 2017 |
Cite this
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Polymerization-Induced Self-Assembly : The Effect of End Group and Initiator Concentration on Morphology of Nanoparticles Prepared via RAFT Aqueous Emulsion Polymerization. / Khor, Song Yang; Truong, Nghia P.; Quinn, John F.; Whittaker, Michael R.; Davis, Thomas P.
In: ACS Macro Letters, Vol. 6, No. 9, 19.09.2017, p. 1013-1019.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Polymerization-Induced Self-Assembly
T2 - The Effect of End Group and Initiator Concentration on Morphology of Nanoparticles Prepared via RAFT Aqueous Emulsion Polymerization
AU - Khor, Song Yang
AU - Truong, Nghia P.
AU - Quinn, John F.
AU - Whittaker, Michael R.
AU - Davis, Thomas P.
PY - 2017/9/19
Y1 - 2017/9/19
N2 - Polymerization-induced self-assembly (PISA) is a widely used technique for the synthesis of nanoparticles with various morphologies including spheres, worms, and vesicles. The development of a PISA formulation based on reversible addition-fragmentation chain transfer (RAFT) aqueous emulsion polymerization offers considerable advantages such as enhanced rate of polymerization, high conversion and environmentally friendly conditions. However, this formulation has typically produced spheres as opposed to worms and vesicles. Herein, we report the formation of vesicle morphology by increasing the RAFT end-group hydrophobicity of the macromolecular chain transfer agent or manipulating the radical initiator concentration used in the aqueous emulsion polymerization PISA formulation. Additionally, decreasing the molecular weight of the hydrophobic polystyrene domain in these vesicles leads to the formation of worms. This work demonstrates that RAFT end-group hydrophobicity and radical initiator concentration are key parameters which can be exploited to enable access to sphere, worm, and vesicle morphologies via the RAFT aqueous emulsion polymerization.
AB - Polymerization-induced self-assembly (PISA) is a widely used technique for the synthesis of nanoparticles with various morphologies including spheres, worms, and vesicles. The development of a PISA formulation based on reversible addition-fragmentation chain transfer (RAFT) aqueous emulsion polymerization offers considerable advantages such as enhanced rate of polymerization, high conversion and environmentally friendly conditions. However, this formulation has typically produced spheres as opposed to worms and vesicles. Herein, we report the formation of vesicle morphology by increasing the RAFT end-group hydrophobicity of the macromolecular chain transfer agent or manipulating the radical initiator concentration used in the aqueous emulsion polymerization PISA formulation. Additionally, decreasing the molecular weight of the hydrophobic polystyrene domain in these vesicles leads to the formation of worms. This work demonstrates that RAFT end-group hydrophobicity and radical initiator concentration are key parameters which can be exploited to enable access to sphere, worm, and vesicle morphologies via the RAFT aqueous emulsion polymerization.
UR - http://www.scopus.com/inward/record.url?scp=85029684338&partnerID=8YFLogxK
U2 - 10.1021/acsmacrolett.7b00583
DO - 10.1021/acsmacrolett.7b00583
M3 - Article
VL - 6
SP - 1013
EP - 1019
JO - ACS Macro Letters
JF - ACS Macro Letters
SN - 2161-1653
IS - 9
ER -