Intramicellar glass transition and liquid dynamics in soft confinement

Li Min Wang; Fang He; Ranko Richert

doi:10.1103/PhysRevLett.92.095701

Intramicellar glass transition and liquid dynamics in soft confinement

Li Min Wang, Fang He, Ranko Richert

Molecular Sciences, School of (SMS)

Research output: Contribution to journal › Article › peer-review

54 Scopus citations

Abstract

The dynamics of viscous propylene glycol (PG) within the droplets of 4.6 nm diameter suspended in a more fluid environment was explored. The soft confinement was achieved by microemulsions of the water-in-oil type, where PG was the intramicellar compound. A composition range in which the self-assembled structures remained stable near the glass transition temperature T_g of PG at 160 K. The results show that the dynamics of PG in soft confinement is accelerated, whereas the usual hard confinement led to frustrated relaxation of PG near its T_g.

Original language	English (US)
Article number	095701
Pages (from-to)	095701-1-095701-4
Journal	Physical Review Letters
Volume	92
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.92.095701
State	Published - Mar 5 2004

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.92.095701

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title = "Intramicellar glass transition and liquid dynamics in soft confinement",

abstract = "The dynamics of viscous propylene glycol (PG) within the droplets of 4.6 nm diameter suspended in a more fluid environment was explored. The soft confinement was achieved by microemulsions of the water-in-oil type, where PG was the intramicellar compound. A composition range in which the self-assembled structures remained stable near the glass transition temperature Tg of PG at 160 K. The results show that the dynamics of PG in soft confinement is accelerated, whereas the usual hard confinement led to frustrated relaxation of PG near its Tg.",

author = "Wang, {Li Min} and Fang He and Ranko Richert",

note = "Funding Information: The authors are grateful to C. A. Angell for his continued support and helpful discussions. This material is based upon work supported by the National Science Foundation under Grant No. DMR 0304640 (NIRT).",

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AU - He, Fang

AU - Richert, Ranko

N1 - Funding Information: The authors are grateful to C. A. Angell for his continued support and helpful discussions. This material is based upon work supported by the National Science Foundation under Grant No. DMR 0304640 (NIRT).

PY - 2004/3/5

Y1 - 2004/3/5

N2 - The dynamics of viscous propylene glycol (PG) within the droplets of 4.6 nm diameter suspended in a more fluid environment was explored. The soft confinement was achieved by microemulsions of the water-in-oil type, where PG was the intramicellar compound. A composition range in which the self-assembled structures remained stable near the glass transition temperature Tg of PG at 160 K. The results show that the dynamics of PG in soft confinement is accelerated, whereas the usual hard confinement led to frustrated relaxation of PG near its Tg.

AB - The dynamics of viscous propylene glycol (PG) within the droplets of 4.6 nm diameter suspended in a more fluid environment was explored. The soft confinement was achieved by microemulsions of the water-in-oil type, where PG was the intramicellar compound. A composition range in which the self-assembled structures remained stable near the glass transition temperature Tg of PG at 160 K. The results show that the dynamics of PG in soft confinement is accelerated, whereas the usual hard confinement led to frustrated relaxation of PG near its Tg.

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Intramicellar glass transition and liquid dynamics in soft confinement

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