Journal
CARBON
Volume 124, Issue -, Pages 618-629Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2017.08.060
Keywords
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Funding
- National Natural Science Foundation of China [51432006, 51172100]
- Ministry of Education
- State Administration of Foreign Experts Affairs for the 111 Project [B13025]
- Ministry of Education of China for the Changjiang Innovation Research Team [IRT14R23]
- 100 Talents Program of CAS
- Ministry of Science and Technology of China for International Science Linkages Program [2011DFG52970]
- Australian Research Council
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Electron-withdrawing 4-cyanophenyl-, electronically innocent phenyl-, and electron-donating 4-dimethylaminophenyl-functionalized porphyrin/single-walled carbon nanotube (SWCNT) nanohybrids have been synthesized and characterized by ultraviolet-visible absorption, steady-state fluorescence, Fourier transform infrared, and Raman spectroscopies, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy and thermogravimetric analysis. Nonlinear optical (NLO) studies using the Z-scan technique revealed that both the cyano (CN) and the dimethylamino (DMA) substituents have a positive effect in optimizing the optical limiting performance of the SWCNT-porphyrin nanohybrids, owing to increased reverse saturable absorption (RSA) of the porphyrin moieties after functionalization by CN or DMA. In comparison with CN, the DMA group has a more positive influence on the porphyrin excited states and thereby the RSA and NLO activity. (C) 2017 Elsevier Ltd. All rights reserved.
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