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dc.contributor.authorYildiz, Remziye
dc.contributor.authorOzen, Sercan
dc.contributor.authorSahin, Hasan
dc.contributor.authorAkdogan, Yasar
dc.descriptionSahin, Hasan/0000-0002-6189-6707; OZEN, Sercan/0000-0001-9955-4158en_US
dc.descriptionWOS: 000523631300054en_US
dc.description.abstractMussels 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.en_US
dc.publisherElsevier Science Saen_US
dc.subjectMussel adhesionen_US
dc.subjectSurface coverageen_US
dc.subjectEPR spectroscopyen_US
dc.subjectDFT calculationsen_US
dc.titleThe effect of DOPA hydroxyl groups on wet adhesion to polystyrene surface: An experimental and theoretical studyen_US
dc.relation.journalMaterials Chemistry And Physicsen_US
dc.contributor.departmentIzmir Institute of Technologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.cont.department-temp[Yildiz, Remziye; Akdogan, Yasar] Izmir Inst Technol, Mat Sci & Engn Dept, TR-35430 Izmir, Turkey; [Ozen, Sercan; Sahin, Hasan] Izmir Inst Technol, Dept Photon, TR-35430 Izmir, Turkeyen_US

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