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Tris‐Stabilized MoS 2 Nanosheets with Robust Dispersibility and Facile Surface Functionalization
Author(s) -
Guan Guijian,
You Mingliang,
Liu Xuan,
Wu YunLong,
Ye Enyi,
Li Zibiao
Publication year - 2019
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201900585
Subject(s) - materials science , tris , surface modification , nanomaterials , polymer , hydroxymethyl , chemical engineering , coating , photothermal therapy , sonication , molecule , nanotechnology , organic chemistry , composite material , chemistry , biochemistry , engineering
Abstract Here, tris(hydroxymethyl)aminomethane (i.e., Tris) is reported to be an effective protecting agent to stabilize 2D nanomaterials in water for various enhanced applications. As demonstrated, molybdenum sulfide (MoS 2 ) nanosheets are first exfoliated from MoS 2 bulk under a low‐energy sonication in the assistance of protein bovine serum albumin (BSA), and then BSA molecules are replaced with Tris to stabilize the exfoliated MoS 2 nanosheets. The Tris‐stabilized MoS 2 nanosheets have a robust dispersibility to resist long‐term storage (e.g., 2.5 years), high temperature (e.g., 220 °C), and high speed centrifugation (e.g., 12 000 rpm). Furthermore, they also exhibit high biocompatibility and promising photothermal effect, which provide a better performance in photothermal therapy for inhibiting the growth of tumor. In addition, the surface Tris molecules readily introduce the grafting of polydopamine on MoS 2 nanosheets to form a universal platform for coating of other functional polymers on nanosheets. Overall, this work not only brings more opportunities to exploit the outstanding applications of 2D nanomaterials, but also suggests a new and effective route to prepare the composite of nanosheets and functional polymers for their synergistic properties.