Abstract
Recently, polymer-coated magnetite (Fe3O4) nanoparticles (NPs) are extensively studied for applications in therapeutics or diagnostics using photothermal effect. Therefore, it is essential to understand the interactions between Fe3O4 NPs and polymers when optical stimuli are applied. Herein, the photonic reactions of Fe3O4 NPs and polymer composites upon application of a 780 nm multiphoton laser are analyzed. The photonic reactions produce unique results including fluorescence from conformationally changed polymer and low-temperature phase transformation of Fe3O4 NPs. Typically, π-conjugated chains are formed, inducing fluorescence through a series of main and side-chain cleavage reactions of polymers with the aliphatic chain. In addition, fluorescence is detected in the cellular system by photonic reactions between Fe3O4 NPs and biomolecules. After multiphoton laser irradiation, light emission is detected near the intracellular Fe3O4 NPs, and a stronger intensity is observed in large-sized NPs.
Original language | English |
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Article number | 1700897 |
Journal | Small |
Volume | 13 |
Issue number | 37 |
DOIs | |
Publication status | Published - 2017 Oct 4 |
Bibliographical note
Funding Information:Y.K.K. received financial support from the National Research Foundation of Korea (2015R1A2A1A15053002 and 2014M3A7B4052193). Y.J.K. received financial support from the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2013R1A1A2063087).
Publisher Copyright:
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Keywords
- FeO nanoparticles
- fluorescence
- interactions
- photothermal effect
- polymers
ASJC Scopus subject areas
- Biotechnology
- Biomaterials
- General Chemistry
- General Materials Science