Detail publikačního výsledku

Supramolecular Interaction Tuning of Spin-Crossover in Pyrene/ Fullerene (C60) Tethered FeII-2,6-Di(pyrazol-1-yl)pyridine Complexes: Towards Switchable Molecular Devices

KUMAR, K.; ŠALITROŠ, I.; SURYADEVARA, N.; MORENO-PINEDA, E.; RUBEN, M.

Originální název

Supramolecular Interaction Tuning of Spin-Crossover in Pyrene/ Fullerene (C60) Tethered FeII-2,6-Di(pyrazol-1-yl)pyridine Complexes: Towards Switchable Molecular Devices

Anglický název

Supramolecular Interaction Tuning of Spin-Crossover in Pyrene/ Fullerene (C60) Tethered FeII-2,6-Di(pyrazol-1-yl)pyridine Complexes: Towards Switchable Molecular Devices

Druh

Článek WoS

Originální abstrakt

A set of functional SCO systems based on FeII-2,6- di(pyrazol-1-yl)pyridine (BPP), FeII-BPP, featuring supramolecular pyrene and fullerene (C60) anchoring groups for nanocarbon materials are designed and synthesized. The pyrene tethered complexes [Fe(L1)2](BF4)2 and [Fe(L2)2](BF4)2 comprise structurally different BPP-pyrene ligand systems L1 (BPP-COOR, R = –CH2-pyrene) and L2 [BPP-CH2OR, R = –OC(CH2)-pyrene]. The [Fe(L1)2](BF4)2 complex showed gradual and high temperature SCO (T1/2 = ca. 450 K), whereas the [Fe(L2)2](BF4)2 complex remained trapped in the high spin (HS) state in the 300–5 K temperature range. On the other hand, the bulky fullerene (C60) tethered complex, [Fe(L3)2](BF4)2, is HS at 385 K and showed gradual but incomplete SCO, upon cooling, centered at 208 K. The results compiled in this study indicate the dominant role of intermolecular interactions in tuning/blocking SCO in the studied FeII-BPP complexes, a fact that needs to be carefully weighed while designing functional-SCO systems.

Anglický abstrakt

A set of functional SCO systems based on FeII-2,6- di(pyrazol-1-yl)pyridine (BPP), FeII-BPP, featuring supramolecular pyrene and fullerene (C60) anchoring groups for nanocarbon materials are designed and synthesized. The pyrene tethered complexes [Fe(L1)2](BF4)2 and [Fe(L2)2](BF4)2 comprise structurally different BPP-pyrene ligand systems L1 (BPP-COOR, R = –CH2-pyrene) and L2 [BPP-CH2OR, R = –OC(CH2)-pyrene]. The [Fe(L1)2](BF4)2 complex showed gradual and high temperature SCO (T1/2 = ca. 450 K), whereas the [Fe(L2)2](BF4)2 complex remained trapped in the high spin (HS) state in the 300–5 K temperature range. On the other hand, the bulky fullerene (C60) tethered complex, [Fe(L3)2](BF4)2, is HS at 385 K and showed gradual but incomplete SCO, upon cooling, centered at 208 K. The results compiled in this study indicate the dominant role of intermolecular interactions in tuning/blocking SCO in the studied FeII-BPP complexes, a fact that needs to be carefully weighed while designing functional-SCO systems.

Klíčová slova

Iron; Spin-crossover; Anchoring groups; Functional materials; Molecular electronics

Klíčová slova v angličtině

Iron; Spin-crossover; Anchoring groups; Functional materials; Molecular electronics

Autoři

KUMAR, K.; ŠALITROŠ, I.; SURYADEVARA, N.; MORENO-PINEDA, E.; RUBEN, M.

Rok RIV

2019

Vydáno

19.12.2018

ISSN

1434-1948

Periodikum

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY

Svazek

47

Číslo

1

Stát

Spolková republika Německo

Strany od

5091

Strany do

5097

Strany počet

7

BibTex

@article{BUT152154,
  author="Kuppusamy Senthil {Kumar} and Ivan {Šalitroš} and Nithin {Suryadevara} and Eufemio {Moreno-Pineda} and Mario {Ruben}",
  title="Supramolecular Interaction Tuning of Spin-Crossover in Pyrene/ Fullerene (C60) Tethered FeII-2,6-Di(pyrazol-1-yl)pyridine Complexes: Towards Switchable Molecular Devices",
  journal="EUROPEAN JOURNAL OF INORGANIC CHEMISTRY",
  year="2018",
  volume="47",
  number="1",
  pages="5091--5097",
  doi="10.1002/ejic.201801109",
  issn="1434-1948"
}