Siloxane-functionalized calix[4]pyrrole: Synthesis, characterization and modification of silica-based solid supports

Abdullah Aydogan, Ahmet Akar*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


A siloxane-functionalized calix[4]pyrrole derivative was synthesized starting from the corresponding alcohol-functionalized calix[4]pyrrole. Structural elucidation was carried out by using NMR spectroscopy, mass spectrometry and X-ray diffraction analysis. The use of this siloxane-functionalized calix[4]pyrrole for modification of various silica solid supports (silica gel 60, fume silica, and SiO2 nanopowder) was studied. Characterization of the modified silica solid supports was achieved by FTIR, TGA, and elemental analysis. It was also shown that the production of silica nanoparticles is possible via a sol-gel reaction of siloxane- functionalized calix[4]pyrrole and tetraethoxysilane (TEOS). Calix[4]pyrrole modified silica solid supports were found to sense chloride anions of Azure A dye.

Original languageEnglish
Pages (from-to)2790-2793
Number of pages4
JournalTetrahedron Letters
Issue number21
Publication statusPublished - 25 May 2011


This work was supported by the Scientific Research Projects Unit of Istanbul Technical University (Project No: 34171).

FundersFunder number
Istanbul Teknik Üniversitesi34171


    • Anion receptors
    • Calix[4]pyrrole
    • Separation
    • Silica solid supports


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