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Control of Electron Pathway in in-situ Synthesized Carbon Dot@Cellulose Nanofiber with Stable Solid-state Emission

Control of Electron Pathway in in-situ Synthesized Carbon Dot@Cellulose Nanofiber with Stable... In this study, carbon dot (CD) was in-situ synthesized on cellulose nanofiber (CNF) surface by simple one-step hydrothermal carbonization. Based on the analyses of chemical structure and photoluminescence characteristics, we changed the electron pathway of carbon dot by controlling the CNF concentration in the composite. The electronic stabilization of CNF was observed in the composites from low CNF concentrations. Meanwhile, with high CNF concentrations, electrons were barely transferred to CNFs but recombined radiatively. Aggregation-induced blue-shifted emission occurred in the solid-state composite films without significant changes in the electron relaxation pathways. This study provides valuable insights into the electron relaxation pathway of the fabricated composite, which may be helpful in the design and economical fabrication of CD-based advanced optical devices. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Fibers and Polymers Springer Journals

Control of Electron Pathway in in-situ Synthesized Carbon Dot@Cellulose Nanofiber with Stable Solid-state Emission

Ahn, Jungbin; Pak, Sewon; Kim, Hyungsup
Fibers and Polymers , Volume 23 (8) – Aug 1, 2022
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Publisher
Springer Journals
Copyright
Copyright © The Korean Fiber Society 2022
ISSN
1229-9197
eISSN
1875-0052
DOI
10.1007/s12221-022-4829-1
Publisher site
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Abstract

In this study, carbon dot (CD) was in-situ synthesized on cellulose nanofiber (CNF) surface by simple one-step hydrothermal carbonization. Based on the analyses of chemical structure and photoluminescence characteristics, we changed the electron pathway of carbon dot by controlling the CNF concentration in the composite. The electronic stabilization of CNF was observed in the composites from low CNF concentrations. Meanwhile, with high CNF concentrations, electrons were barely transferred to CNFs but recombined radiatively. Aggregation-induced blue-shifted emission occurred in the solid-state composite films without significant changes in the electron relaxation pathways. This study provides valuable insights into the electron relaxation pathway of the fabricated composite, which may be helpful in the design and economical fabrication of CD-based advanced optical devices.

Journal

Fibers and Polymers – Springer Journals

Published: Aug 1, 2022

Keywords: Carbon dot; Cellulose nanofiber; Electron transfer pathway; Solid state emission; Optical device

References