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Morphology Tunable Hybrid Carbon Nanosheets with Solvatochromism
Author(s) -
Choi Yuri,
Kim Sunghu,
Choi Yeongkyu,
Song Jaeeun,
Kwon TaeHyuk,
Kwon OhHoon,
Kim ByeongSu
Publication year - 2017
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201701075
Subject(s) - materials science , solvatochromism , graphene , carbon fibers , photoluminescence , nanomaterials , nanotechnology , nanostructure , nanosheet , oxide , hybrid material , carbonization , hydrothermal carbonization , chemical engineering , optoelectronics , molecule , organic chemistry , scanning electron microscope , composite material , chemistry , composite number , metallurgy , engineering
The tunable photoluminescence of carbon‐based nanomaterials has received much attention for a wide range of applications. Herein, a unique, broad‐solvatochromic hybrid carbon nanosheet (CNS) synthesized through the hydrothermal carbonization of molecular precursors exploiting graphene oxide as a template is reported, resulting in the formation of clusters of carbon nanorings on the surface of graphene‐oxide nanosheets. Under UV and visible‐light excitation, the hybrid CNS exhibits tunable emission spanning the wide range of colors in a series of solvents with different polarities. This interesting spectroscopic behavior is found to originate from hydrogen‐bonding interactions between CNS and solvents, which eventually induce the morphological transition of CNS from 2D sheets to 3D crumpled morphologies, affecting the lifetimes of emissive states. This novel soft carbon nanostructure may open up a new possibility in tailoring the photophysical properties of carbon nanomaterials.