%0 Journal Article %1 WOS:000356129200021 %A Andrade, N F %A Vasconcelos, T L %A Gouvea, C P %A Archanjo, B S %A Achete, C A %A Kim, Y A %A Endo, M %A Fantini, C %A Dresselhaus, M S %A Filho, A G Souza %C THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND %D 2015 %I PERGAMON-ELSEVIER SCIENCE LTD %J CARBON %K imported %P 172-180 %R 10.1016/j.carbon.2015.04.001 %T Linear carbon chains encapsulated in multiwall carbon nanotubes: Resonance Raman spectroscopy and transmission electron microscopy studies %V 90 %X In this paper we report the characterization of linear carbon chains encapsulated in multiwalled carbon nanotubes by using Raman spectroscopy and transmission electron microscopy. The chains are characterized by strong vibrational peaks around 1850 cm(-1) and both the frequency and intensity of these peaks were found to be dependent on laser excitation energy. Furthermore, resonance Raman spectroscopy was used for constructing the resonance window of the linear carbon chains. The Raman spectroscopy data showed that long chains have lower highest occupied molecular orbital-lowest unoccupied molecular orbital energy gaps and weaker carbon-carbon bonds. Besides the spectroscopy evidence for the linear carbon chain, we used scanning transmission electron microscopy/electron energy loss spectroscopy analysis of the nanotube cross section to unambiguously show the existence of a 1D structure present within the innermost carbon nanotube with an unprecedented clarity compared to previous reports on this kind of system. (C) 2015 Elsevier Ltd. All rights reserved.

@article{WOS:000356129200021, abstract = {In this paper we report the characterization of linear carbon chains encapsulated in multiwalled carbon nanotubes by using Raman spectroscopy and transmission electron microscopy. The chains are characterized by strong vibrational peaks around 1850 cm(-1) and both the frequency and intensity of these peaks were found to be dependent on laser excitation energy. Furthermore, resonance Raman spectroscopy was used for constructing the resonance window of the linear carbon chains. The Raman spectroscopy data showed that long chains have lower highest occupied molecular orbital-lowest unoccupied molecular orbital energy gaps and weaker carbon-carbon bonds. Besides the spectroscopy evidence for the linear carbon chain, we used scanning transmission electron microscopy/electron energy loss spectroscopy analysis of the nanotube cross section to unambiguously show the existence of a 1D structure present within the innermost carbon nanotube with an unprecedented clarity compared to previous reports on this kind of system. (C) 2015 Elsevier Ltd. All rights reserved.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND}, author = {Andrade, N F and Vasconcelos, T L and Gouvea, C P and Archanjo, B S and Achete, C A and Kim, Y A and Endo, M and Fantini, C and Dresselhaus, M S and Filho, A G Souza}, biburl = {https://www.bibsonomy.org/bibtex/23ef0fc5dd0dbea0db5f0e93bc134fd41/ppgfis_ufc_br}, doi = {10.1016/j.carbon.2015.04.001}, interhash = {d7676acc83ef5cee509a385c87bbcc2f}, intrahash = {3ef0fc5dd0dbea0db5f0e93bc134fd41}, issn = {0008-6223}, journal = {CARBON}, keywords = {imported}, pages = {172-180}, publisher = {PERGAMON-ELSEVIER SCIENCE LTD}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {Linear carbon chains encapsulated in multiwall carbon nanotubes: Resonance Raman spectroscopy and transmission electron microscopy studies}, tppubtype = {article}, volume = 90, year = 2015 }