Light-induced surface modification of natural plant microparticles : toward colloidal science and cellular adhesion applications

Playing an instrumental role in the life of plants, pollen microparticles are one of the most fascinating biological materials in existence, with abundant and renewable supply, ultrahigh durability, and unique, species-specific architectural features. Aside from their biological role, pollen micropa...

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Main Authors: Tan, Ee-Lin, Potroz, Michael G., Ferracci, Gaia, Jackman, Joshua A., Jung, Haram, Wang, Lili, Cho, Nam-Joon
Other Authors: School of Chemical and Biomedical Engineering
Format: Journal Article
Language:English
Published: 2020
Subjects:
Online Access:https://hdl.handle.net/10356/140259
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author Tan, Ee-Lin
Potroz, Michael G.
Ferracci, Gaia
Jackman, Joshua A.
Jung, Haram
Wang, Lili
Cho, Nam-Joon
author2 School of Chemical and Biomedical Engineering
author_facet School of Chemical and Biomedical Engineering
Tan, Ee-Lin
Potroz, Michael G.
Ferracci, Gaia
Jackman, Joshua A.
Jung, Haram
Wang, Lili
Cho, Nam-Joon
author_sort Tan, Ee-Lin
collection NTU
description Playing an instrumental role in the life of plants, pollen microparticles are one of the most fascinating biological materials in existence, with abundant and renewable supply, ultrahigh durability, and unique, species-specific architectural features. Aside from their biological role, pollen microparticles also demonstrate broad utility as functional materials for drug delivery and microencapsulation, and increasingly for emulsion-type applications. As natural pollen microparticles are predominantly hydrophobic, developing robust surface functionalization strategies to increase surface hydrophilicity would increase the range of colloidal science applications, including opening the door to interfacing microparticles with biological cells. This research investigates the extraction and light-induced surface modification of discrete pollen microparticles from bee-collected pollen granules toward achieving functional control over the responses elicited from discrete particles in colloidal science and cellular applications. Ultraviolet–ozone treatment is shown to increase the proportion of surface elemental oxygen and ketones, leading to increased surface hydrophilicity, enhanced particle dispersibility, tunable control over Pickering emulsion characteristics, and enhanced cellular adhesion. In summary, the findings demonstrate that light-induced surface modification improves the functional properties of pollen microparticles, and such insights also have broad implications across materials science and environmental science applications.
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spelling ntu-10356/1402592020-06-01T10:13:51Z Light-induced surface modification of natural plant microparticles : toward colloidal science and cellular adhesion applications Tan, Ee-Lin Potroz, Michael G. Ferracci, Gaia Jackman, Joshua A. Jung, Haram Wang, Lili Cho, Nam-Joon School of Chemical and Biomedical Engineering School of Materials Science & Engineering Centre for Biomimetic Sensor Science Engineering::Materials Cellular Adhesion Colloids Playing an instrumental role in the life of plants, pollen microparticles are one of the most fascinating biological materials in existence, with abundant and renewable supply, ultrahigh durability, and unique, species-specific architectural features. Aside from their biological role, pollen microparticles also demonstrate broad utility as functional materials for drug delivery and microencapsulation, and increasingly for emulsion-type applications. As natural pollen microparticles are predominantly hydrophobic, developing robust surface functionalization strategies to increase surface hydrophilicity would increase the range of colloidal science applications, including opening the door to interfacing microparticles with biological cells. This research investigates the extraction and light-induced surface modification of discrete pollen microparticles from bee-collected pollen granules toward achieving functional control over the responses elicited from discrete particles in colloidal science and cellular applications. Ultraviolet–ozone treatment is shown to increase the proportion of surface elemental oxygen and ketones, leading to increased surface hydrophilicity, enhanced particle dispersibility, tunable control over Pickering emulsion characteristics, and enhanced cellular adhesion. In summary, the findings demonstrate that light-induced surface modification improves the functional properties of pollen microparticles, and such insights also have broad implications across materials science and environmental science applications. NRF (Natl Research Foundation, S’pore) 2020-05-27T09:16:18Z 2020-05-27T09:16:18Z 2018 Journal Article Tan, E.-L., Potroz, M. G., Ferracci, G., Jackman, J. A., Jung, H., Wang, L., & Cho, N.-J. (2018). Light-induced surface modification of natural plant microparticles : toward colloidal science and cellular adhesion applications. Advanced Functional Materials, 28(18), 1707568-. doi:10.1002/adfm.201707568 1616-301X https://hdl.handle.net/10356/140259 10.1002/adfm.201707568 2-s2.0-85042617417 18 28 en Advanced Functional Materials © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved.
spellingShingle Engineering::Materials
Cellular Adhesion
Colloids
Tan, Ee-Lin
Potroz, Michael G.
Ferracci, Gaia
Jackman, Joshua A.
Jung, Haram
Wang, Lili
Cho, Nam-Joon
Light-induced surface modification of natural plant microparticles : toward colloidal science and cellular adhesion applications
title Light-induced surface modification of natural plant microparticles : toward colloidal science and cellular adhesion applications
title_full Light-induced surface modification of natural plant microparticles : toward colloidal science and cellular adhesion applications
title_fullStr Light-induced surface modification of natural plant microparticles : toward colloidal science and cellular adhesion applications
title_full_unstemmed Light-induced surface modification of natural plant microparticles : toward colloidal science and cellular adhesion applications
title_short Light-induced surface modification of natural plant microparticles : toward colloidal science and cellular adhesion applications
title_sort light induced surface modification of natural plant microparticles toward colloidal science and cellular adhesion applications
topic Engineering::Materials
Cellular Adhesion
Colloids
url https://hdl.handle.net/10356/140259
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