Abstract
To understand the nature of polymers capable of forming multiply bound polymer chains (MBPCs) on surfaces, the Langmuir-Blodgett (LB) technique and Scanning Probe Microscopy (SPM) have been utilized to investigate surface morphology of the amphiphilic triblock copolymer (P2VP-b-dPS-b-P2VP, M n = 125,000, dPS:P2VP = 1:1) at the air-water interface. The LB monolayer studies were carried out via π-A isotherms, compression-expansion cycles, kinetic stability, and nanoscopic surface morphological behavior. A strong pH effect was observed on the surface limiting area, stability, and morphology forming various 2-D aggregates. In particular, well-ordered interesting nanostructures (nano-donut formation) of the triblock copolymer aggregates depend on the effect of pH on the hydrophilic P2VP blocks, acting as a "cushion" at the air-water interface. In addition, equilibrium factors between the adsorption of the hydrophilic outer blocks (related to its solubility) and the entanglement of the hydrophobic dPS blocks during the evaporation of the spreading solution may play a critical role.
| Original language | English |
|---|---|
| Pages (from-to) | 747-749 |
| Number of pages | 3 |
| Journal | Soft Matter |
| Volume | 5 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2009 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Chemistry(all)
- Condensed Matter Physics
Cite this
Nano-donuts from pH-dependent block restructuring in amphiphilic ABA triblock copolymer vesicles at the air-water interface. / Park, Jin Young; Liu, Ming; Mays, Jimmy; Dadmun, Mark; Advincula, Rigoberto.
In: Soft Matter, Vol. 5, No. 4, 2009, p. 747-749.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Nano-donuts from pH-dependent block restructuring in amphiphilic ABA triblock copolymer vesicles at the air-water interface
AU - Park, Jin Young
AU - Liu, Ming
AU - Mays, Jimmy
AU - Dadmun, Mark
AU - Advincula, Rigoberto
PY - 2009
Y1 - 2009
N2 - To understand the nature of polymers capable of forming multiply bound polymer chains (MBPCs) on surfaces, the Langmuir-Blodgett (LB) technique and Scanning Probe Microscopy (SPM) have been utilized to investigate surface morphology of the amphiphilic triblock copolymer (P2VP-b-dPS-b-P2VP, M n = 125,000, dPS:P2VP = 1:1) at the air-water interface. The LB monolayer studies were carried out via π-A isotherms, compression-expansion cycles, kinetic stability, and nanoscopic surface morphological behavior. A strong pH effect was observed on the surface limiting area, stability, and morphology forming various 2-D aggregates. In particular, well-ordered interesting nanostructures (nano-donut formation) of the triblock copolymer aggregates depend on the effect of pH on the hydrophilic P2VP blocks, acting as a "cushion" at the air-water interface. In addition, equilibrium factors between the adsorption of the hydrophilic outer blocks (related to its solubility) and the entanglement of the hydrophobic dPS blocks during the evaporation of the spreading solution may play a critical role.
AB - To understand the nature of polymers capable of forming multiply bound polymer chains (MBPCs) on surfaces, the Langmuir-Blodgett (LB) technique and Scanning Probe Microscopy (SPM) have been utilized to investigate surface morphology of the amphiphilic triblock copolymer (P2VP-b-dPS-b-P2VP, M n = 125,000, dPS:P2VP = 1:1) at the air-water interface. The LB monolayer studies were carried out via π-A isotherms, compression-expansion cycles, kinetic stability, and nanoscopic surface morphological behavior. A strong pH effect was observed on the surface limiting area, stability, and morphology forming various 2-D aggregates. In particular, well-ordered interesting nanostructures (nano-donut formation) of the triblock copolymer aggregates depend on the effect of pH on the hydrophilic P2VP blocks, acting as a "cushion" at the air-water interface. In addition, equilibrium factors between the adsorption of the hydrophilic outer blocks (related to its solubility) and the entanglement of the hydrophobic dPS blocks during the evaporation of the spreading solution may play a critical role.
UR - http://www.scopus.com/inward/record.url?scp=60049087786&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=60049087786&partnerID=8YFLogxK
U2 - 10.1039/b810149c
DO - 10.1039/b810149c
M3 - Article
AN - SCOPUS:60049087786
VL - 5
SP - 747
EP - 749
JO - Soft Matter
JF - Soft Matter
SN - 1744-683X
IS - 4
ER -