A Novel Imine Based-Liquid Crystal/PHBHHx Composite: Synthesis and Characterization

Ceylan-Erdogan D., TÜRKOĞLU N., OCAK H., Bilgin-Eranm B.

CHEMISTRYSELECT, vol.5, no.14, pp.4235-4238, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 5 Issue: 14
  • Publication Date: 2020
  • Doi Number: 10.1002/slct.202000526
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier
  • Page Numbers: pp.4235-4238
  • Keywords: Liquid crystal, imine based chiral calamitic LC, Poly (3-hydroxybutyrate-co-3-hydroxyhexanoate), composite membrane, cell compatibility, BLOOD-COMPATIBILITY, POLYMERS, CRYSTALS
  • Yıldız Technical University Affiliated: Yes


A new imine based chiral calamitic compound carrying a (S)-3,7-Dimethyloctyloxy group at one of terminal was synthesized and characterized by H-1-NMR, C-13-NMR and FT-IR spectroscopy. 4-Dodecyloxybenzylidene-4 '-(S)-(3,7-dimethyloctyloxy) aniline (DBDMA) exhibits an enantiotropic chiral smectic tilted phase (SmC*) at a low temperature range. The mesomorphic properties of new liquid crystal were determined by Differential Scanning Calorimetry (DSC) and Polarised Optical Microscopy (POM). A new composite membrane was also prepared from DBDMA and Poly (3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) via solvent evaporation technique. The surface morphology as well as the mechanical behaviour of PHBHHx/DBDMA composite membrane were investigated by Scanning Electron Microscopy (SEM) and Dynamic Mechanical Analysis (DMA). Additionally, cell compatibility tests of the PHBHHx/DBDMA composite were performed by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) method. The surface of PHBHHx/DBDMA composite membrane exhibited a homogenous porosity. The introduction of DBDMA into the polymer media improves the cell viability and mechanical strength.