, Volume 25, Issue 7, pp 3211–3222 | Cite as

Synthesis and structural and thermal properties of cyclotriphosphazene-based ionic liquids: tribological behavior and OFET application

  • Ali Destegül
  • Hüseyin Akbaş
  • Ahmet KaradağEmail author
  • Betül Canımkurbey
  • Yusuf Yerli
  • Kadir Cihan Tekin
  • Uğur Malayoğlu
  • Zeynel Kılıç
Original Paper


Three new fully substituted starting materials (Pz1-3) were synthesized reacting dimethylaminoethanol, 3-dimethylamino-1-propanol, and 4-pyrridinemethanol, which were saltified using metallic sodium, with partly substituted phosphazene (Pz) compound. Phosphazene-based ionic liquids (PzILs), PzIL1-3, were obtained from the reaction of the starting materials with CH3I. New ionic liquids (PzIL1a-3a) were obtained by replacing the I ions of these ionic liquids with the NTf2 anions. The structures of PzILs were elucidated by elemental analysis, FTIR, and 1H, 13C {1H}, and 31P {1H} NMR techniques. The thermal properties of all compounds were investigated using thermogravimetric (TG) analysis. Compared with the output materials, the thermal stability of the ionic liquids was found to be higher, 160, 199, and 228 °C for PzIL1-3 respectively, and 270, 204, and 287 °C for PzIL1a-3a respectively. At the same time, the viscosity measurements of PzIL1a-3a compounds obtained as liquids in room temperature were measured with a cone/plate viscometer. It is understood from the viscosity values that the fluidities of these compounds are as low as 864, 3801, and 423,700 cP, respectively (water viscosity is 0.7977 cP at 30 °C). In addition to these studies, sliding wear test was conducted at room temperature using AA7075 disc specimen against the stationary 100Cr6 steel ball. The wear protection of PzILs was determined considering the volume loss of AA7075.


Phosphazene Phosphazene-based ionic liquid Tribology Organic field-effect transistor 


Funding information

We thank the Scientific and Technical Research Council of Turkey (TUBİTAK, Grant KBAG-114Z740; COST Action CM 1206) for financial support. The author Z. K. thanks to Turkish Academy of Sciences (TÜBA) for the partial support of this study.

Supplementary material

11581_2019_2846_MOESM1_ESM.pdf (1.2 mb)
ESM 1 (PDF 1236 kb)


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Ali Destegül
    • 1
  • Hüseyin Akbaş
    • 1
  • Ahmet Karadağ
    • 1
    • 2
    Email author
  • Betül Canımkurbey
    • 3
  • Yusuf Yerli
    • 4
  • Kadir Cihan Tekin
    • 5
  • Uğur Malayoğlu
    • 6
  • Zeynel Kılıç
    • 6
  1. 1.Department of ChemistryGaziosmanpaşa UniversityTokatTurkey
  2. 2.Department of BiotechnologyBartın UniversityBartınTurkey
  3. 3.Department of PhysicsAmasya UniversityAmasyaTurkey
  4. 4.Department of PhysicsYıldız Technical UniversityIstanbulTurkey
  5. 5.Department of Metallurgical and Materials EngineeringDokuz Eylül UniversityİzmirTurkey
  6. 6.Department of ChemistryAnkara UniversityAnkaraTurkey

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