New lyotropic mixtures with non-chiral n-acylamino acid surfactants presenting the biaxial nematic phase investigated by laser conoscopy, polarized optical microscopy and X-ray diffraction

Basit Öğe Kaydı
dc.authorid0000-0002-6339-8699en_US
dc.authorid0000-0003-2933-5296en_US
dc.authorid0000-0002-9854-5177en_US
dc.contributor.authorAkpınar, Erol
dc.contributor.authorReis, Dennys
dc.contributor.authorYıldıırm, Muhammet
dc.contributor.authorFigueiredo Neto, Antonio Martins
dc.date.accessioned2021-06-23T19:35:52Z
dc.date.available2021-06-23T19:35:52Z
dc.date.issued2014
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Kimya Bölümüen_US
dc.description.abstractAmino acid-based surfactants were used as the main surfactants to prepare new lyotropic mixtures presenting three nematic phases. One of them is biaxial (N-B), and the two others are uniaxial, discotic (N-D) and calamitic (N-C). These surfactants were the non-chiral molecules, potassium N-dodecanoyl-DL-alaninate (DL-KDDA), potassium N-dodecanoyl-DL-serinate (DL-KDDS), disodium N-dodecanoyl-DL-aspartate (DL-NaDDAs) and potassium N-dodecanoyl-glycinate (KDDGly). Measurements of the optical birefringences and X-ray diffraction analysis were used to characterize the nematic phases and phase transitions. Mixtures with DL-KDDS exhibited the largest biaxial phase domain (similar to 9 degrees C) with respect to the other mixtures in this study. The results obtained with the KDDGly mixture showed that the existence of hydrogen bonding between the head groups of the surfactant molecules seems to hinder the orientation of the micelles under the action of an external magnetic field.en_US
dc.identifier.doi10.3390/ma7064132
dc.identifier.endpage4147en_US
dc.identifier.issn1996-1944
dc.identifier.issue6en_US
dc.identifier.pmid28788669en_US
dc.identifier.scopus2-s2.0-84902584993en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage4132en_US
dc.identifier.urihttps://doi.org/10.3390/ma7064132
dc.identifier.urihttps://hdl.handle.net/20.500.12491/7885
dc.identifier.volume7en_US
dc.identifier.wosWOS:000338517300004en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.institutionauthorAkpınar, Erol
dc.institutionauthorYıldıırm, Muhammet
dc.language.isoenen_US
dc.publisherMdpi Agen_US
dc.relation.ispartofMaterialsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectBiaxial Nematicen_US
dc.subjectPhase Transitionsen_US
dc.subjectBirefringenceen_US
dc.subjectLaser Conoscopyen_US
dc.subjectStructureen_US
dc.subjecthydrogen bondingen_US
dc.subjectX-ray Diffractionen_US
dc.titleNew lyotropic mixtures with non-chiral n-acylamino acid surfactants presenting the biaxial nematic phase investigated by laser conoscopy, polarized optical microscopy and X-ray diffractionen_US
dc.typeArticleen_US

Dosyalar

Orijinal paket
Listeleniyor 1 - 1 / 1
Küçük Resim
İsim:
erol-akpinar-7885.pdf
Boyut:
1.08 MB
Biçim:
Adobe Portable Document Format
Açıklama:
Tam metin/Full text
İndir

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Kimya Bölümü Koleksiyonu
PubMed İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu