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Synthesis and properties of click coupled graphene oxide sheets with three‐dimensional macromolecules
Author(s) -
Mahapatra Sibdas Singha,
Ramasamy Madeshwaran Sekkarapatti,
Yoo Hye Jin,
Yi Dong Hun,
Cho Jae Whan
Publication year - 2016
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.43358
Subject(s) - graphene , materials science , fourier transform infrared spectroscopy , surface modification , x ray photoelectron spectroscopy , oxide , polyurethane , chemical engineering , transmission electron microscopy , polymer chemistry , photothermal therapy , spectroscopy , nanotechnology , composite material , engineering , metallurgy , physics , quantum mechanics
A facile click chemistry approach to the functionalization of three‐dimensional hyperbranched polyurethane (HPU) to graphene oxide (GO) nanosheets is presented. HPU‐functionalized GO samples of various compositions were synthesized by reacting alkyne‐functionalized HPU with azide‐functionalized GO sheets. The morphological characterization of the HPU‐functionalized GO was performed using transmission electron microscopy and its chemical characterization was carried out using Fourier transform‐infrared spectroscopy, nuclear magnetic resonance spectroscopy, and X‐ray photoelectron spectroscopy. The graphene sheet surfaces were highly functionalized, leading to improved solubility in organic solvents, and consequently, enhanced mechanical, thermal, and thermoresponsive and photothermal shape memory properties. The strategy reported herein provides a very efficient method for regulating composite properties and producing high performance materials. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43358.