Journal article

Fluorescence anisotropy imaging of a polydiacetylene photopolymer film

Hamid Soleimaninejad, Kenneth P Ghiggino, Trevor A Smith, Matthew F Paige

CANADIAN JOURNAL OF CHEMISTRY | CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS | Published : 2019

Abstract

UV-illumination of phase-separated surfactant films prepared from mixtures of photopolymerizable 10,12-pentacosadiynoic acid and perfluorotetradecanoic acid results in the formation of fluorescent polydiacetylene fibers and aggregates. In this work, the orientation of polymer strands that comprise the resulting photopolymer structures has been probed using fluorescence anisotropy imaging in combination with defocused single-molecule fluorescence imaging. Imaging experiments indicate the presence of significant fiber-to-fiber heterogeneity, as well as anisotropy within each fiber (or aggregate), with both of these properties changing as a function of film preparation conditions. This anisotro..

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Grants

Awarded by Australian Research Council Centre of Excellence in Exciton Science


Funding Acknowledgements

Financial support for this work has been provided by the Natural Sciences and Engineering Research Council of Canada, the Canadian Foundation for Innovation, and the University of Saskatchewan. Support from the Australian Research Council Centre of Excellence in Exciton Science (CE170100026) is gratefully acknowledged. All of the authors thank Ronald P. Steer for many years of excellent science, fruitful collaborations, and of course, friendship. Best wishes for a happy (and research active) retirement, and we hope to share our scientific adventures with you for many years to come.