Isolation, spectroscopic characterization and study of island formation of two isomers of the metallofullerene Nd@C82

Kyriakos Porfyrakis; David F. Leigh; James H.G. Owen; Seung M. Lee; Mito Kanai; Gavin Morley; Arzhang Ardavan; T. John S. Dennis; David G. Pettifor; G. Andrew D. Briggs

doi:10.1149/1.2214618

Isolation, spectroscopic characterization and study of island formation of two isomers of the metallofullerene Nd@C₈₂

Kyriakos Porfyrakis^*, David F. Leigh, James H.G. Owen, Seung M. Lee, Mito Kanai, Gavin Morley, Arzhang Ardavan, T. John S. Dennis, David G. Pettifor, G. Andrew D. Briggs

^*Corresponding author for this work

Research output: Chapter in Book or Report/Conference proceeding › Conference Proceeding › peer-review

Abstract

Two types of the metallofullerene Nd@C₈₂ have been isolated and characterized. HPLC was used to isolate Nd@C₈₂(I, II). The two isomers were characterized by mass spectrometry and UV-Vis-N1R absorption spectroscopy. Nd@C₈₂(I) was found to be similar in structure to the main isomer of other lanthanofullerenes such as La@C₈₂. We assign Nd@C₈₂(I) to have a C_2v cage symmetry. Nd@C ₈₂(II) showed a markedly different UV-Vis-NIR absorption spectrum to Nd@C₈₂(I). Its spectrum is in good agreement with that of the minor isomer of metallofullerenes such as Pr@C₈₂. We therefore assign Nd@C₈₂(II) to have a C_s cage symmetry. In contrast to other metallofullerenes, both isomers appear to be equally abundant. Their molecular orbital structures have been studied by a combination of scanning tunnelling microscopy (STM) and density functional theory (DFT). Matching filled and empty-states STM images to DFT calculations allowed us to distinguish directly between the two isomers on a substrate. copyright The Electrochemical Society.

Original language	English
Title of host publication	Electrochromics for Energy Efficiency
Subtitle of host publication	From the Material to the System
Publisher	Electrochemical Society Inc.
Pages	43-49
Number of pages	7
Edition	15
ISBN (Electronic)	9781566774987
DOIs	https://doi.org/10.1149/1.2214618
Publication status	Published - 2006
Externally published	Yes
Event	Electrochromics for the Energy Efficiency - 208th Electrochemical Society Meeting - Los Angeles, United States Duration: 16 Oct 2005 → 21 Oct 2005

Publication series

Name	ECS Transactions
Number	15
Volume	1
ISSN (Print)	1938-5862
ISSN (Electronic)	1938-6737

Conference

Conference	Electrochromics for the Energy Efficiency - 208th Electrochemical Society Meeting
Country/Territory	United States
City	Los Angeles
Period	16/10/05 → 21/10/05

Access to Document

10.1149/1.2214618

Cite this

Porfyrakis, K., Leigh, D. F., Owen, J. H. G., Lee, S. M., Kanai, M., Morley, G., Ardavan, A., Dennis, T. J. S., Pettifor, D. G., & Briggs, G. A. D. (2006). Isolation, spectroscopic characterization and study of island formation of two isomers of the metallofullerene Nd@C₈₂. In Electrochromics for Energy Efficiency: From the Material to the System (15 ed., pp. 43-49). (ECS Transactions; Vol. 1, No. 15). Electrochemical Society Inc.. https://doi.org/10.1149/1.2214618

@inproceedings{70f474338fa4416aa67cb262ec1a24a6,

title = "Isolation, spectroscopic characterization and study of island formation of two isomers of the metallofullerene Nd@C82",

abstract = "Two types of the metallofullerene Nd@C82 have been isolated and characterized. HPLC was used to isolate Nd@C82(I, II). The two isomers were characterized by mass spectrometry and UV-Vis-N1R absorption spectroscopy. Nd@C82(I) was found to be similar in structure to the main isomer of other lanthanofullerenes such as La@C82. We assign Nd@C82(I) to have a C2v cage symmetry. Nd@C 82(II) showed a markedly different UV-Vis-NIR absorption spectrum to Nd@C82(I). Its spectrum is in good agreement with that of the minor isomer of metallofullerenes such as Pr@C82. We therefore assign Nd@C82(II) to have a Cs cage symmetry. In contrast to other metallofullerenes, both isomers appear to be equally abundant. Their molecular orbital structures have been studied by a combination of scanning tunnelling microscopy (STM) and density functional theory (DFT). Matching filled and empty-states STM images to DFT calculations allowed us to distinguish directly between the two isomers on a substrate. copyright The Electrochemical Society.",

author = "Kyriakos Porfyrakis and Leigh, {David F.} and Owen, {James H.G.} and Lee, {Seung M.} and Mito Kanai and Gavin Morley and Arzhang Ardavan and Dennis, {T. John S.} and Pettifor, {David G.} and Briggs, {G. Andrew D.}",

year = "2006",

doi = "10.1149/1.2214618",

language = "English",

series = "ECS Transactions",

publisher = "Electrochemical Society Inc.",

number = "15",

pages = "43--49",

booktitle = "Electrochromics for Energy Efficiency",

edition = "15",

note = "Electrochromics for the Energy Efficiency - 208th Electrochemical Society Meeting ; Conference date: 16-10-2005 Through 21-10-2005",

}

Porfyrakis, K, Leigh, DF, Owen, JHG, Lee, SM, Kanai, M, Morley, G, Ardavan, A, Dennis, TJS, Pettifor, DG & Briggs, GAD 2006, Isolation, spectroscopic characterization and study of island formation of two isomers of the metallofullerene Nd@C₈₂. in Electrochromics for Energy Efficiency: From the Material to the System. 15 edn, ECS Transactions, no. 15, vol. 1, Electrochemical Society Inc., pp. 43-49, Electrochromics for the Energy Efficiency - 208th Electrochemical Society Meeting, Los Angeles, United States, 16/10/05. https://doi.org/10.1149/1.2214618

Isolation, spectroscopic characterization and study of island formation of two isomers of the metallofullerene Nd@C₈₂. / Porfyrakis, Kyriakos; Leigh, David F.; Owen, James H.G. et al.
Electrochromics for Energy Efficiency: From the Material to the System. 15. ed. Electrochemical Society Inc., 2006. p. 43-49 (ECS Transactions; Vol. 1, No. 15).

Research output: Chapter in Book or Report/Conference proceeding › Conference Proceeding › peer-review

TY - GEN

T1 - Isolation, spectroscopic characterization and study of island formation of two isomers of the metallofullerene Nd@C82

AU - Porfyrakis, Kyriakos

AU - Leigh, David F.

AU - Owen, James H.G.

AU - Lee, Seung M.

AU - Kanai, Mito

AU - Morley, Gavin

AU - Ardavan, Arzhang

AU - Dennis, T. John S.

AU - Pettifor, David G.

AU - Briggs, G. Andrew D.

PY - 2006

Y1 - 2006

N2 - Two types of the metallofullerene Nd@C82 have been isolated and characterized. HPLC was used to isolate Nd@C82(I, II). The two isomers were characterized by mass spectrometry and UV-Vis-N1R absorption spectroscopy. Nd@C82(I) was found to be similar in structure to the main isomer of other lanthanofullerenes such as La@C82. We assign Nd@C82(I) to have a C2v cage symmetry. Nd@C 82(II) showed a markedly different UV-Vis-NIR absorption spectrum to Nd@C82(I). Its spectrum is in good agreement with that of the minor isomer of metallofullerenes such as Pr@C82. We therefore assign Nd@C82(II) to have a Cs cage symmetry. In contrast to other metallofullerenes, both isomers appear to be equally abundant. Their molecular orbital structures have been studied by a combination of scanning tunnelling microscopy (STM) and density functional theory (DFT). Matching filled and empty-states STM images to DFT calculations allowed us to distinguish directly between the two isomers on a substrate. copyright The Electrochemical Society.

AB - Two types of the metallofullerene Nd@C82 have been isolated and characterized. HPLC was used to isolate Nd@C82(I, II). The two isomers were characterized by mass spectrometry and UV-Vis-N1R absorption spectroscopy. Nd@C82(I) was found to be similar in structure to the main isomer of other lanthanofullerenes such as La@C82. We assign Nd@C82(I) to have a C2v cage symmetry. Nd@C 82(II) showed a markedly different UV-Vis-NIR absorption spectrum to Nd@C82(I). Its spectrum is in good agreement with that of the minor isomer of metallofullerenes such as Pr@C82. We therefore assign Nd@C82(II) to have a Cs cage symmetry. In contrast to other metallofullerenes, both isomers appear to be equally abundant. Their molecular orbital structures have been studied by a combination of scanning tunnelling microscopy (STM) and density functional theory (DFT). Matching filled and empty-states STM images to DFT calculations allowed us to distinguish directly between the two isomers on a substrate. copyright The Electrochemical Society.

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U2 - 10.1149/1.2214618

DO - 10.1149/1.2214618

M3 - Conference Proceeding

AN - SCOPUS:33846841054

T3 - ECS Transactions

SP - 43

EP - 49

BT - Electrochromics for Energy Efficiency

PB - Electrochemical Society Inc.

T2 - Electrochromics for the Energy Efficiency - 208th Electrochemical Society Meeting

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