Yıldız, Remziye

Profile URL
https://hdl.handle.net/11147/16398
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Main Affiliation
01. Izmir Institute of Technology
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External
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WoS Researcher ID

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Scholarly Output

2

Articles

1

Views / Downloads

3205/907

Supervised MSc Theses

1

Supervised PhD Theses

0

WoS Citation Count

10

Scopus Citation Count

12

Patents

0

Projects

0

WoS Citations per Publication

5.00

Scopus Citations per Publication

6.00

Open Access Source

2

Supervised Theses

1

JournalCount
Materials Chemistry and Physics1
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Author of Publication: search.filters.isAuthorOfPublication.23f14108-de2e-464d-a425-f0324cc80ca3

Scholarly Output Search Results

Now showing 1 - 2 of 2
  • Article
    Citation - WoS: 10
    Citation - Scopus: 12
    The Effect of Dopa Hydroxyl Groups on Wet Adhesion To Polystyrene Surface: an Experimental and Theoretical Study
    (Elsevier, 2020) Yıldız, Remziye; Şahin, Hasan; Özen, Sercan; Akdoğan, Yaşar; Şahin, Hasan; Yıldız, Remziye; Akdoğan, Yaşar; 03.09. Department of Materials Science and Engineering; 01. Izmir Institute of Technology; 04.04. Department of Photonics; 03. Faculty of Engineering; 04. Faculty of Science
    Mussels wet adhesive performance has been arousing curiosity for a long time. It is found that 3,4-dihydroxyphenylalanine (DOPA) is responsible for adhesive properties of mussels. Despite a large body of research characterizing the interactions DOPA with hydrophilic surfaces, relatively few works have addressed the mechanism of interactions with hydrophobic surfaces. The benzene ring of DOPA is the main attributor to the adhesion on hydrophobic polystyrene (PS) surface. However, here we showed that two hydroxyl groups of catechol have also effects on wet adhesion. We studied wet adhesive properties of DOPA, tyrosine and phenylalanine functionalized PEG polymers, PEG-(N-Boc-L-DOPA)(4), PEG-(N-Boc-L-Tyrosine)(4), PEG-(N-Boc-L-Phenylalanine)(4), on spin labeled PS nanobeads (SL-PS) by electron paramagnetic resonance (EPR) spectroscopy. Surface coverage ratio of SL-PS upon additions of PEG-(N-Boc-L-DOPA)(4), PEG-(N-Boc-L-Tyrosine)(4) and PEG-(N-Boc-L-Phenylalanine)(4) showed that SL-PS was covered with 70%, 50% and 0%, respectively. This showed that spontaneous wet adhesion on PS increases with the number of amino acids hydroxyl groups. This is also supported with the density functional theory (DFT) energy calculations and ab-initio molecular dynamics (AIMD) simulations. In water, interactions between water molecules and hydroxyl groups on the catechol induce catechol adhesion via 7C-7C stacking between the catechol and double styrene rings which were already tilted out with water.
  • Master Thesis
    Studying Dopa Adhesion on Polystyrene Under Water
    (Izmir Institute of Technology, 2021) Yıldız, Remziye; Yıldız, Remziye; Akdoğan, Yaşar; Emrullahoğlu, Mustafa; Akdoğan, Yaşar; Emrullahoğlu, Mustafa; 03.09. Department of Materials Science and Engineering; 01. Izmir Institute of Technology; 04.04. Department of Photonics; 03. Faculty of Engineering; 04. Faculty of Science
    Mussels wet adhesive performance has been arousing curiosity for a long time. It is found that 3,4-dihydroxyphenylalanine (DOPA) is responsible for adhesive properties of mussels. Despite a large body of research characterizing the interactions DOPA with hydrophilic surfaces, relatively few works have addressed the mechanism of interactions with hydrophobic surfaces. The benzene ring of DOPA is the main attributor to the adhesion on hydrophobic polystyrene (PS) surface. However, here we showed that two hydroxyl groups of catechol have also effects on wet adhesion. We studied wet adhesive properties of DOPA, tyrosine and phenylalanine functionalized PEG polymers, PEG-(N-Boc-L-DOPA)4, PEG-(N-Boc-L-Tyrosine)4, PEG-(N-Boc-L-Phenylalanine)4, on spin labeled PS nanobeads (SL-PS) by electron paramagnetic resonance (EPR) spectroscopy. Surface coverage ratio of SL-PS upon additions of PEG-(N-Boc-L-DOPA)4, PEG-(N-Boc-L-Tyrosine)4 and PEG-(N-Boc-L-Phenylalanine)4 showed that SL-PS was covered with 70%, 50% and 0%, respectively. This showed that spontaneous wet adhesion on PS increases with the number of amino acids hydroxyl groups. This is also supported with the density functional theory (DFT) energy calculations and ab-initio molecular dynamics (AIMD) simulations. In water, interactions between water molecules and hydroxyl groups on the catechol induce catechol adhesion via π-π stacking between the catechol and double styrene rings which were already tilted out with water.