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Open Quantum Systems Decoherence Quantum Chemistry

Single molecules reorientation reveals the dynamics of polymer glasses surface.

PubMed

Authors: Zhang G, Xiao L, Zhang F, Wang X, Jia S

Year

2010

Paper ID

12395

Status

Peer-reviewed

Abstract Read

~2 min

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Abstract

The polymer glass surface can be many orders of magnitude more mobile than the interior. We probe dynamics with reorientation of single dye molecules spin-coated onto polymer films. Rotation jumps in transition dipole orientation are observed for approximately 30% of all single molecules. It is found for the first time that there are mainly three typical jumping patterns of orientation: dithering jump, alternate jump and stepping jump patterns. The distribution of rotational correlation time are used to characterize the dynamics of polymer glass surfaces.

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The polymer glass surface can be many orders of magnitude more mobile than the interior.

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References & Citation Signals

[1] DOI https://doi.org/10.1039/b917686a [2] Publisher https://pubmed.ncbi.nlm.nih.gov/20449343/

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