Coassembly of nanorods and nanospheres in suspensions and in stratified films

Angewandte Chemie
Héloïse Thérien-AubinEugenia Kumacheva

Abstract

The entropically driven coassembly of nanorods (cellulose nanocrystals, CNCs) and nanospheres (dye-labeled spherical latex nanoparticles, NPs) was studied in aqueous suspensions and in solid films. In mixed CNC-latex suspensions, phase separation into an isotropic latex-NP-rich and a chiral nematic CNC-rich phase took place; the latter contained a significant amount of latex NPs. Drying the mixed suspension resulted in CNC-latex films with planar disordered layers of latex NPs, which alternated with chiral nematic CNC-rich regions. In addition, fluorescent latex NPs were embedded in the chiral nematic domains. The stratified morphology of the films, together with a random distribution of latex NPs in the anisotropic phase, led to the films having close-to-uniform fluorescence, birefringence, and circular dichroism properties.

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Citations

Jul 15, 2015·ACS Applied Materials & Interfaces·Lu WangHuaping Xu
Aug 24, 2016·Chemical Reviews·Michael A BolesDmitri V Talapin
Jan 24, 2017·Chemical Communications : Chem Comm·H PanS Zhu
Apr 17, 2018·Chemical Society Reviews·E Johan FosterJeff Youngblood
May 8, 2018·Advanced Materials·Eric S A GoerlitzerNicolas Vogel
Mar 27, 2021·Carbohydrate Polymers·Ulises CasadoMirta I Aranguren
Apr 18, 2021·Science Advances·Amanda J AckroydEugenia Kumacheva
May 4, 2021·Journal of Colloid and Interface Science·Soo-Ah JinRichard J Spontak
May 6, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Emiko MouriTeruyuki Nakato
Jul 10, 2020·ACS Applied Materials & Interfaces·Rui XiongVladimir V Tsukruk
Sep 19, 2017·ACS Omega·Brandon VollickEugenia Kumacheva

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