Synthesis and immobilization of molecular switches onto titaniumdioxide nanowires

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Muhammad Nawaz Tahir
  • Markus Messerschmidt
  • Michael Klein
  • Victor Martinez
  • Patrick Theato
  • Nadine Metz
  • Sonngard Hartmann
  • Ute Kolb
  • Vadim Ksenofontov
  • Franz Renz
  • Wolfgang Tremel

Research Organisations

External Research Organisations

  • Johannes Gutenberg University Mainz
  • Universitat de Valencia
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Details

Original languageEnglish
Pages (from-to)1728-1733
Number of pages6
JournalPOLYHEDRON
Volume28
Issue number9-10
Publication statusPublished - 22 Jun 2009

Abstract

The precursor [FeIII(L)Cl (L = N,N′-bis(2′-hydroxy-3′-methyl-benzyliden)-1,7-diamino- 4-azaheptane) is combined with [Mo(CN)8]4- yields a star shaped nona-nuclear cluster, [MoIV{(CN)FeIII(L)}8]Cl4. This Fe8Mo molecule is a high-spin system at room temperature. On cooling to 20 K some of the iron(III) centres in the molybdenum(IV)-star switch to the low-spin state as proven by Mössbauer spectroscopy. This molecule was deposited on TiO2 nanowires by electrostatic interactions between the cluster cations and the surface functionalized titanium oxide nanowire. The synthesis and surface binding of the multistable molecular switch was demonstrated using IR and UV-Vis spectroscopy (high-resolution) transmission electron microscopy ((HR)TEM) and Mössbauer spectroscopy. High- and low-temperature Mössbauer spectra indicate that the spin state transition of the free cluster molecules is preserved after surface binding. The above results emphasize the possibility of fabricating molecule-based low-dimensional structures by using traditional bottom-up approaches based on the electrostatic interaction between the cluster cations and polymer functionalized nanowires. These results can be generalized for the application to both charged and non-charged molecules.

Keywords

    High-spin molecule, Metal cluster, Mo(IV)-Fe(III), Spin-crossover, Surface immobilization, TiO nanowire

ASJC Scopus subject areas

Cite this

Synthesis and immobilization of molecular switches onto titaniumdioxide nanowires. / Tahir, Muhammad Nawaz; Messerschmidt, Markus; Klein, Michael et al.
In: POLYHEDRON, Vol. 28, No. 9-10, 22.06.2009, p. 1728-1733.

Research output: Contribution to journalArticleResearchpeer review

Tahir, MN, Messerschmidt, M, Klein, M, Martinez, V, Theato, P, Metz, N, Hartmann, S, Kolb, U, Ksenofontov, V, Renz, F & Tremel, W 2009, 'Synthesis and immobilization of molecular switches onto titaniumdioxide nanowires', POLYHEDRON, vol. 28, no. 9-10, pp. 1728-1733. https://doi.org/10.1016/j.poly.2008.10.071
Tahir, M. N., Messerschmidt, M., Klein, M., Martinez, V., Theato, P., Metz, N., Hartmann, S., Kolb, U., Ksenofontov, V., Renz, F., & Tremel, W. (2009). Synthesis and immobilization of molecular switches onto titaniumdioxide nanowires. POLYHEDRON, 28(9-10), 1728-1733. https://doi.org/10.1016/j.poly.2008.10.071
Tahir MN, Messerschmidt M, Klein M, Martinez V, Theato P, Metz N et al. Synthesis and immobilization of molecular switches onto titaniumdioxide nanowires. POLYHEDRON. 2009 Jun 22;28(9-10):1728-1733. doi: 10.1016/j.poly.2008.10.071
Tahir, Muhammad Nawaz ; Messerschmidt, Markus ; Klein, Michael et al. / Synthesis and immobilization of molecular switches onto titaniumdioxide nanowires. In: POLYHEDRON. 2009 ; Vol. 28, No. 9-10. pp. 1728-1733.
Download
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title = "Synthesis and immobilization of molecular switches onto titaniumdioxide nanowires",
abstract = "The precursor [FeIII(L)Cl (L = N,N′-bis(2′-hydroxy-3′-methyl-benzyliden)-1,7-diamino- 4-azaheptane) is combined with [Mo(CN)8]4- yields a star shaped nona-nuclear cluster, [MoIV{(CN)FeIII(L)}8]Cl4. This Fe8Mo molecule is a high-spin system at room temperature. On cooling to 20 K some of the iron(III) centres in the molybdenum(IV)-star switch to the low-spin state as proven by M{\"o}ssbauer spectroscopy. This molecule was deposited on TiO2 nanowires by electrostatic interactions between the cluster cations and the surface functionalized titanium oxide nanowire. The synthesis and surface binding of the multistable molecular switch was demonstrated using IR and UV-Vis spectroscopy (high-resolution) transmission electron microscopy ((HR)TEM) and M{\"o}ssbauer spectroscopy. High- and low-temperature M{\"o}ssbauer spectra indicate that the spin state transition of the free cluster molecules is preserved after surface binding. The above results emphasize the possibility of fabricating molecule-based low-dimensional structures by using traditional bottom-up approaches based on the electrostatic interaction between the cluster cations and polymer functionalized nanowires. These results can be generalized for the application to both charged and non-charged molecules.",
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TY - JOUR

T1 - Synthesis and immobilization of molecular switches onto titaniumdioxide nanowires

AU - Tahir, Muhammad Nawaz

AU - Messerschmidt, Markus

AU - Klein, Michael

AU - Martinez, Victor

AU - Theato, Patrick

AU - Metz, Nadine

AU - Hartmann, Sonngard

AU - Kolb, Ute

AU - Ksenofontov, Vadim

AU - Renz, Franz

AU - Tremel, Wolfgang

N1 - Funding Information: This work was partly funded by the DFG (Re-1627/1-3), the “Fonds der chemischen Industrie”, the University of Mainz (“Forschungsfond”; “Material-Wissenschaftliches Forschungs-Zentrum” = MWFZ), and the Leibniz University of Hannover.

PY - 2009/6/22

Y1 - 2009/6/22

N2 - The precursor [FeIII(L)Cl (L = N,N′-bis(2′-hydroxy-3′-methyl-benzyliden)-1,7-diamino- 4-azaheptane) is combined with [Mo(CN)8]4- yields a star shaped nona-nuclear cluster, [MoIV{(CN)FeIII(L)}8]Cl4. This Fe8Mo molecule is a high-spin system at room temperature. On cooling to 20 K some of the iron(III) centres in the molybdenum(IV)-star switch to the low-spin state as proven by Mössbauer spectroscopy. This molecule was deposited on TiO2 nanowires by electrostatic interactions between the cluster cations and the surface functionalized titanium oxide nanowire. The synthesis and surface binding of the multistable molecular switch was demonstrated using IR and UV-Vis spectroscopy (high-resolution) transmission electron microscopy ((HR)TEM) and Mössbauer spectroscopy. High- and low-temperature Mössbauer spectra indicate that the spin state transition of the free cluster molecules is preserved after surface binding. The above results emphasize the possibility of fabricating molecule-based low-dimensional structures by using traditional bottom-up approaches based on the electrostatic interaction between the cluster cations and polymer functionalized nanowires. These results can be generalized for the application to both charged and non-charged molecules.

AB - The precursor [FeIII(L)Cl (L = N,N′-bis(2′-hydroxy-3′-methyl-benzyliden)-1,7-diamino- 4-azaheptane) is combined with [Mo(CN)8]4- yields a star shaped nona-nuclear cluster, [MoIV{(CN)FeIII(L)}8]Cl4. This Fe8Mo molecule is a high-spin system at room temperature. On cooling to 20 K some of the iron(III) centres in the molybdenum(IV)-star switch to the low-spin state as proven by Mössbauer spectroscopy. This molecule was deposited on TiO2 nanowires by electrostatic interactions between the cluster cations and the surface functionalized titanium oxide nanowire. The synthesis and surface binding of the multistable molecular switch was demonstrated using IR and UV-Vis spectroscopy (high-resolution) transmission electron microscopy ((HR)TEM) and Mössbauer spectroscopy. High- and low-temperature Mössbauer spectra indicate that the spin state transition of the free cluster molecules is preserved after surface binding. The above results emphasize the possibility of fabricating molecule-based low-dimensional structures by using traditional bottom-up approaches based on the electrostatic interaction between the cluster cations and polymer functionalized nanowires. These results can be generalized for the application to both charged and non-charged molecules.

KW - High-spin molecule

KW - Metal cluster

KW - Mo(IV)-Fe(III)

KW - Spin-crossover

KW - Surface immobilization

KW - TiO nanowire

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DO - 10.1016/j.poly.2008.10.071

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VL - 28

SP - 1728

EP - 1733

JO - POLYHEDRON

JF - POLYHEDRON

SN - 0277-5387

IS - 9-10

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