Abstract
The coordination structure between small molecules and metalloporphyrins plays a crucial role in functional reactions such as bio-oxidation and catalytic activation. Their vertical, tilting, and dynamic structures have been actively studied with diffraction and resonance spectroscopy for the past four decades. Contrastingly, real-space visualization beyond simple protrusion and depression is relatively rare. In this paper, high-resolution scanning tunnelling microscopy (STM) images are presented of di-, tri-, and tetra-atomic small molecules (O 2 , NO 2 , and NH 3 , respectively) coordinated to Co-porphyrin on Au(111). A square ring structure was observed for O 2 , a rectangular ring structure for NO 2 , and a bright-center structure for NH 3 at 80 K. The symmetries of experimental STM images were reproduced in density functional theory (DFT) calculations, considering the precession motion of the small molecules. Thus, this study shows that the structure of small molecules coordinated to metalloporphyrins can be visualized using high-resolution STM and DFT calculations.
| Original language | English |
|---|---|
| Pages (from-to) | 8510-8517 |
| Number of pages | 8 |
| Journal | Nanoscale |
| Volume | 11 |
| Issue number | 17 |
| DOIs | |
| Publication status | Published - 2019 May 7 |
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ASJC Scopus subject areas
- Materials Science(all)
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O 2 , NO 2 and NH 3 coordination to Co-porphyrin studied with scanning tunneling microscopy on Au(111) . / Chang, Min Hui; Kim, Na Young; Chang, Yun Hee; Lee, Yeunhee; Jeon, Un Seung; Kim, Howon; Kim, Yong Hyun; Kahng, Se-Jong.
In: Nanoscale, Vol. 11, No. 17, 07.05.2019, p. 8510-8517.Research output: Contribution to journal › Article
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TY - JOUR
T1 - O 2 , NO 2 and NH 3 coordination to Co-porphyrin studied with scanning tunneling microscopy on Au(111)
AU - Chang, Min Hui
AU - Kim, Na Young
AU - Chang, Yun Hee
AU - Lee, Yeunhee
AU - Jeon, Un Seung
AU - Kim, Howon
AU - Kim, Yong Hyun
AU - Kahng, Se-Jong
PY - 2019/5/7
Y1 - 2019/5/7
N2 - The coordination structure between small molecules and metalloporphyrins plays a crucial role in functional reactions such as bio-oxidation and catalytic activation. Their vertical, tilting, and dynamic structures have been actively studied with diffraction and resonance spectroscopy for the past four decades. Contrastingly, real-space visualization beyond simple protrusion and depression is relatively rare. In this paper, high-resolution scanning tunnelling microscopy (STM) images are presented of di-, tri-, and tetra-atomic small molecules (O 2 , NO 2 , and NH 3 , respectively) coordinated to Co-porphyrin on Au(111). A square ring structure was observed for O 2 , a rectangular ring structure for NO 2 , and a bright-center structure for NH 3 at 80 K. The symmetries of experimental STM images were reproduced in density functional theory (DFT) calculations, considering the precession motion of the small molecules. Thus, this study shows that the structure of small molecules coordinated to metalloporphyrins can be visualized using high-resolution STM and DFT calculations.
AB - The coordination structure between small molecules and metalloporphyrins plays a crucial role in functional reactions such as bio-oxidation and catalytic activation. Their vertical, tilting, and dynamic structures have been actively studied with diffraction and resonance spectroscopy for the past four decades. Contrastingly, real-space visualization beyond simple protrusion and depression is relatively rare. In this paper, high-resolution scanning tunnelling microscopy (STM) images are presented of di-, tri-, and tetra-atomic small molecules (O 2 , NO 2 , and NH 3 , respectively) coordinated to Co-porphyrin on Au(111). A square ring structure was observed for O 2 , a rectangular ring structure for NO 2 , and a bright-center structure for NH 3 at 80 K. The symmetries of experimental STM images were reproduced in density functional theory (DFT) calculations, considering the precession motion of the small molecules. Thus, this study shows that the structure of small molecules coordinated to metalloporphyrins can be visualized using high-resolution STM and DFT calculations.
UR - http://www.scopus.com/inward/record.url?scp=85064943061&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85064943061&partnerID=8YFLogxK
U2 - 10.1039/c9nr00843h
DO - 10.1039/c9nr00843h
M3 - Article
C2 - 30990501
AN - SCOPUS:85064943061
VL - 11
SP - 8510
EP - 8517
JO - Nanoscale
JF - Nanoscale
SN - 2040-3364
IS - 17
ER -