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Nanomaterials 2019, 9(3), 363;

Ln3+-Induced Diblock Copolymeric Aggregates for Fully Flexible Tunable White-Light Materials

Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA
Authors to whom correspondence should be addressed.
Received: 2 February 2019 / Revised: 20 February 2019 / Accepted: 27 February 2019 / Published: 5 March 2019
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In this research contribution, nano-aggregates have been fabricated by introducing lanthanide (Ln3+) ions into solutions of amphiphilic diblock copolymers of polystyrene-b-poly (acrylic acid) (PS-b-PAA). The coordination of acrylic acid segments to lanthanide cations induces diblock copolymer (BCPs) self-assembly in order to design stable white luminescent hybrid nanoparticles with fine uniform particle size. The introduction of Ln3+ ions (Eu3+ and Tb3+) bestows the micelles, precisely white light, upon excitation of 342 nm. Lanthanide coordination cross-linking of poly (acrylic acid) segments, or blocks, endows the micelles higher thermal stability than that of BCPs micelles without cross-linking. As the most important key point of this work, the regular and stable nano-particles with high emission quality can make fully flexible electroluminescent devices with self-formation or uncoordinated into polymer hosts. Instead of inorganic luminescent nanoparticles with hard cores, this method can potentially apply for fully flexible white-light emitting diodes (FFWLEDs). View Full-Text
Keywords: nano-aggregates; diblock copolymer; fully flexible; white-light nano-aggregates; diblock copolymer; fully flexible; white-light

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Wang, X.; Tang, J.; Wang, G.; Wang, W.; Ren, J.; Ding, W.; Zhang, X.; Wang, Y.; Shen, W.; Huang, L.; Belfiore, L.A. Ln3+-Induced Diblock Copolymeric Aggregates for Fully Flexible Tunable White-Light Materials. Nanomaterials 2019, 9, 363.

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