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Nanomaterials 2019, 9(3), 363; https://doi.org/10.3390/nano9030363

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

1
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
2
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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Abstract

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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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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