Controlling photophysical properties of ultrasmall conjugated polymer nanoparticles through polymer chain packing
MetadataShow full item record
AbstractApplications of conjugated polymer nanoparticles (Pdots) for imaging and sensing depend on their size, fluorescence brightness and intraparticle energy transfer. The molecular design of conjugated polymers (CPs) has been the main focus of the development of Pdots. Here we demonstrate that proper control of the physical interactions between the chains is as critical as the molecular design. The unique design of twisted CPs and fine-tuning of the reprecipitation conditions allow us to fabricate ultrasmall (3.0–4.5 nm) Pdots with excellent photostability. Extensive photophysical and structural characterization reveals the essential role played by the packing of the polymer chains in the particles in the intraparticle spatial alignment of the emitting sites, which regulate the fluorescence brightness and the intraparticle energy migration efficiency. Our findings enhance understanding of the relationship between chain interactions and the photophysical properties of CP nanomaterials, providing a framework for designing and fabricating functional Pdots for imaging applications.
CitationPiwoński H, Michinobu T, Habuchi S (2017) Controlling photophysical properties of ultrasmall conjugated polymer nanoparticles through polymer chain packing. Nature Communications 8: 15256. Available: http://dx.doi.org/10.1038/ncomms15256.
SponsorsThe research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST). We thank Dr Rachid Sougrat for the cryo-EM images and Dr Christian Canlas and Dr Abdelhamid Emwas for the NMR spectra of the fabricated Pdots. We also thank Haruka Osako for the assistance in the polymer synthesis.
Except where otherwise noted, this item's license is described as This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
- Emission Tuning with Size-Controllable Polymer Dots from a Single Conjugated Polymer.
- Authors: Kim J, Lee TS
- Issue date: 2018 Jan
- Near-infrared fluorescent semiconducting polymer dots with high brightness and pronounced effect of positioning alkyl chains on the comonomers.
- Authors: Chen CP, Huang YC, Liou SY, Wu PJ, Kuo SY, Chan YH
- Issue date: 2014 Dec 10
- Multicolor fluorescent semiconducting polymer dots with narrow emissions and high brightness.
- Authors: Rong Y, Wu C, Yu J, Zhang X, Ye F, Zeigler M, Gallina ME, Wu IC, Zhang Y, Chan YH, Sun W, Uvdal K, Chiu DT
- Issue date: 2013 Jan 22
- Size-dependent property and cell labeling of semiconducting polymer dots.
- Authors: Sun K, Chen H, Wang L, Yin S, Wang H, Xu G, Chen D, Zhang X, Wu C, Qin W
- Issue date: 2014 Jul 9
- Highly fluorescent semiconducting polymer dots for biology and medicine.
- Authors: Wu C, Chiu DT
- Issue date: 2013 Mar 11