Prof. Dr. Oguz Okay

Profile

Academic positionFull Professor
Research fieldsPreparative and Physical Chemistry of Polymers
KeywordsHydrogels, Gelation, Macroporous polymers, Elasticity, Biopolymers

Current contact address

CountryTurkey
CityMaslak / Istanbul
InstitutionIstanbul Technical University
InstituteDepartment of Chemistry
Homepagewww.kimya.itu.edu.tr/ookay

Host during sponsorship

Prof. Dr. Werner FunkeInstitut für Technische Chemie, Universität Stuttgart, Stuttgart
Prof. Dr. Wilhelm OppermannInstitut für Textil- und Faserchemie, Universität Stuttgart, Stuttgart
Prof. Dr. Wilhelm OppermannInstitut für Physikalische Chemie, Technische Universität Clausthal, Clausthal-Zellerfeld
Prof. Dr. Matthias BallauffInstitut für Weiche Materie und Funktionale Materialien, Helmholtz-Zentrum Berlin für Materialien und Energie (HZB), Berlin
Start of initial sponsorship01/05/1988

Programme(s)

1987Humboldt Research Fellowship Programme
2014Georg Forster Research Award Programme

Nominator's project description

Professor Okay is one of the leading scientists in the field of polymeric soft matter. His research activities focus on the structure - property relations in soft polymeric materials and polymer gels. His numerous contributions range from fundamental work on gels with self-healing properties up to the development of reusable sorbent materials for the clean-up of oil spillage. During his stay at the Helmholtz-Zentrum Berlin he will use the neutron beamlines and other facilities to study self-healing materials in detail.

Publications (partial selection)

2025Aydin, Gamze and Abdullah, Turdimuhammad and Okay, Oguz: 4D printing of self-healing and shape-memory hydrogels sensitive to body temperature. In: EUROPEAN POLYMER JOURNAL, 223, 2025,
2025Ilyasoglu, Guelmire and Abdullah, Turdimuhammad and Okay, Oguz and Koyuncu, Ismail: Design of Electrospun Hydrophobically Modified Polyacrylic acid Hydrogel Nanofibers and their Application for Removal of Ciprofloxacin. In: JOURNAL OF POLYMERS AND THE ENVIRONMENT, 33, 2025, 1705-1721
2024Abdullah, Turdimuhammad and Altinkok, Cagatay and Okay, Oguz: Melt-Processable and Electrospinnable Shape-Memory Hydrogels. In: MACROMOLECULAR MATERIALS AND ENGINEERING, 309, 2024,
2024Oral, Cigdem Buse and Su, Esra and Okay, Oguz: Silk Fibroin-Based Multiple-Shape-Memory Organohydrogels. In: ACS APPLIED MATERIALS \& INTERFACES, 16, 2024, 56146-56158
2023Abdullah, Turdimuhammad and Okay, Oguz: 4D Printing of Body Temperature-Responsive Hydrogels Based on Poly(acrylic acid) with Shape-Memory and Self-Healing Abilities. In: ACS APPLIED BIO MATERIALS, 2023,
2023Okay, Oguz: Cryogelation reactions and cryogels: principles and challenges. In: TURKISH JOURNAL OF CHEMISTRY, 47, 2023, 910-926
2023Doser, Gamze and Su, Esra and Okay, Oguz: Effects of cryogenic condition and chemistry on the properties of synthetic and biopolymer cryogels. In: REACTIVE \& FUNCTIONAL POLYMERS, 190, 2023,
2023Bas, Yahya and Okay, Oguz: Mechanically Robust Shape-Memory Organohydrogels Based on Silk Fibroin with Organogel Microinclusions of Various Sizes. In: MACROMOLECULAR MATERIALS AND ENGINEERING, 308, 2023,
2023Sekizkardes, Busra and Su, Esra and Okay, Oguz: Mechanically Strong Superabsorbent Terpolymer Hydrogels Based on AMPS via Hydrogen-Bonding Interactions. In: ACS APPLIED POLYMER MATERIALS, 2023,
2023Oral, Cigdem Buse and Yetiskin, Berkant and Cil, Canan and Kok, Fatma Nese and Okay, Oguz: Silk Fibroin-Based Shape-Memory Organohydrogels with Semicrystalline Microinclusions. In: ACS APPLIED BIO MATERIALS, 6, 2023, 1594-1603
2022Tavsanli, Burak and Bilici, Cigdem and Sungur, Pelin and Ide, Semra and Okay, Oguz: Butyl rubber as a macro-cross-linker in the preparation of a shape-memory and self-healing polymer. In: JOURNAL OF RHEOLOGY, 66, 2022, 1367-1378
2022Su, Esra and Bayazit, Gozde and Ide, Semra and Okay, Oguz: Butyl rubber-based interpenetrating polymer networks with side chain crystallinity: Self-healing and shape-memory polymers with tunable thermal and mechanical properties. In: EUROPEAN POLYMER JOURNAL, 168, 2022,
2022Yetiskin, Berkant and Tavsanli, Burak and Okay, Oguz: Photocurable Methacrylated Silk Fibroin/Hyaluronic Acid Dual Macrocrosslinker System Generating Extracellular Matrix-Inspired Tough and Stretchable Hydrogels. In: MACROMOLECULAR MATERIALS AND ENGINEERING, 307, 2022,
2022Tureyen, O. E. and Yakan, S. D. and Yilmaz, A. and Yetiskin, B. and Okay, O. and Okay, O. S.: Polycyclic Aromatic Hydrocarbon Accumulation Performances of Monophasic Butyl Rubber Passive Samplers. In: ENVIRONMENTAL PROCESSES-AN INTERNATIONAL JOURNAL, 9, 2022,
2022Erkoc, Cagla and Yildirim, Erol and Yurtsever, Mine and Okay, Oguz: Roadmap to Design Mechanically Robust Copolymer Hydrogels Naturally Cross-Linked by Hydrogen Bonds. In: MACROMOLECULES, 55, 2022, 10576-10589
2022Akca, Ozge and Okay, Oguz: Shape-Memory Semicrystalline Polymeric Materials Based on Various Rubbers. In: MACROMOLECULAR MATERIALS AND ENGINEERING, 307, 2022,
2022Yetiskin, Berkant and Okay, Oguz: Silk Fibroin Cryogel Building Adaptive Organohydrogels with Switching Mechanics and Viscoelasticity. In: ACS APPLIED POLYMER MATERIALS, 2022,
2022Sekitmen, Gozde Bayazit and Su, Esra and Gur, Sinem Diken and Ide, Semra and Okay, Oguz: Sterilization studies of hydrogel nanocomposites designed for possible biomedical applications before in vivo research. In: REACTIVE \& FUNCTIONAL POLYMERS, 180, 2022,
2022Ceper, Ezgi B. and Su, Esra and Okay, Oguz and Guney, Orhan: Surface modification of graphene oxide for preparing self-healing nanocomposite hydrogels. In: POLYMERS FOR ADVANCED TECHNOLOGIES, 33, 2022, 2276-2288
2021Kudaibergenov, Sarkyt E. and Okay, Oguz: Behaviors of quenched polyampholytes in solution and gel state. In: POLYMERS FOR ADVANCED TECHNOLOGIES, 32, 2021, 2639-2654
2021Guven, Melek Naz and Balaban, Burcu and Demirci, Gozde and Acar, Havva Yagci and Okay, Oguz and Avci, Duygu: Bisphosphonate-functionalized poly(amido amine) crosslinked 2-hydrox-yethyl methacrylate hydrogel as tissue engineering scaffold. In: EUROPEAN POLYMER JOURNAL, 159, 2021,
2021Tureyen, Oktay E. and Yilmaz, Atilla and Yakan, Sevil D. and Yetiskin, Berkant and Okay, Oguz and Okay, Oya S.: Performance of butyl rubber-based macroporous sorbents as passive samplers. In: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 28, 2021, 3766-3773
2021Okay, Oguz: Re-Entrant Conformation Transition in Hydrogels. In: GELS, 7, 2021,
2021Su, Esra and Bilici, Cigdem and Bayazit, Gozde and Ide, Semra and Okay, Oguz: Solvent-Free UV Polymerization of n-Octadecyl Acrylate in Butyl Rubber: A Simple Way to Produce Tough and Smart Polymeric Materials at Ambient Temperature. In: ACS APPLIED MATERIALS \& INTERFACES, 13, 2021, 21786-21799
2020Guven, Melek Naz and Demirci, Gozde and Altuncu, Seckin and Gulyuz, Umit and Okay, Oguz and Acar, Havva Yagci and Avci, Duygu: Alendronate-functionalized poly(amido amine) cryogels of high-toughness for biomedical applications. In: POLYMER, 190, 2020,
2020Toleutay, Gaukhar and Su, Esra and Kudaibergenov, Sarkyt and Okay, Oguz: Highly stretchable and thermally healable polyampholyte hydrogels via hydrophobic modification. In: COLLOID AND POLYMER SCIENCE, 298, 2020, 273-284
2020Okay, Oguz: How to Design Both Mechanically Strong and Self-Healable Hydrogels?. In: Creton, C and Okay, O, SELF-HEALING AND SELF-RECOVERING HYDROGELS. 2020. 21-62
2020Akca, Ozge and Yetiskin, Berkant and Okay, Oguz: Hydrophobically modified nanocomposite hydrogels with self-healing ability. In: JOURNAL OF APPLIED POLYMER SCIENCE, 137, 2020,
2020Tavsanli, Burak and Okay, Oguz: Macroporous methacrylated hyaluronic acid cryogels of high mechanical strength and flow-dependent viscoelasticity. In: CARBOHYDRATE POLYMERS, 229, 2020,
2020Ari, Betul and Yetiskin, Berkant and Okay, Oguz and Sahiner, Nurettin: Preparation of dextran cryogels for separation processes of binary dye and pesticide mixtures from aqueous solutions. In: POLYMER ENGINEERING AND SCIENCE, 60, 2020, 1890-1901
2020Creton, Costantino and Okay, Oguz: Self-Healing and Self-Recovering Hydrogels Preface. In: Creton, C and Okay, O, SELF-HEALING AND SELF-RECOVERING HYDROGELS. 2020. V-VI
2020Oral, C. B. and Yetiskin, B. and Okay, O.: Stretchable silk fibroin hydrogels. In: INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES, 161, 2020, 1371-1380
2019Su, Esra and Yurtsever, Mine and Okay, Oguz: A Self-Healing and Highly Stretchable Polyelectrolyte Hydrogel via Cooperative Hydrogen Bonding as a Superabsorbent Polymer. In: MACROMOLECULES, 52, 2019, 3257-3267
2019Suner, Selin S. and Demirci, Sahin and Yetiskin, Berkant and Fakhrullin, Rawil and Naumenko, Ekaterina and Okay, Oguz and Ayyala, Ramesh S. and Sahiner, Nurettin: Cryogel composites based on hyaluronic acid and halloysite nanotubes as scaffold for tissue engineering. In: INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES, 130, 2019, 627-635
2019Su, Esra and Okay, Oguz: Cryogenic formation-structure-property relationships of poly(2-acrylamido-2-methyl-1-propanesulfonic acid) cryogels. In: POLYMER, 178, 2019,
2019Yetiskin, Berkant and Okay, Oguz: High-strength and self-recoverable silk fibroin cryogels with anisotropic swelling and mechanical properties. In: INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES, 122, 2019, 1279-1289
2019Muslumova, Sevil and Yetiskin, Berkant and Okay, Oguz: Highly Stretchable and Rapid Self-Recoverable Cryogels Based on Butyl Rubber as Reusable Sorbent. In: GELS, 5, 2019,
2019Tavsanli, Burak and Okay, Oguz: Mechanically robust and stretchable silk/hyaluronic acid hydrogels. In: CARBOHYDRATE POLYMERS, 208, 2019, 413-420
2019Bingol, Betul and Altuncu, Seckin and Duman, Fatma Demir and Ak, Ayse and Gulyuz, Umit and Acar, Havva Yagci and Okay, Oguz and Avci, Duygu: One-Step Injectable and Bioreducible Poly(β-Amino Ester) Hydrogels as Controlled Drug Delivery Platforms. In: ACS APPLIED POLYMER MATERIALS, 1, 2019, 1724-1734
2019Argun, Aslihan and Gulyuz, Umit and Okay, Oguz: Semi-Crystalline, Three-Segmented Hybrid Gels with Multiple Shape-Memory Effect. In: MACROMOLECULAR SYMPOSIA, 385, 2019,
2019Okay, Oguz: Semicrystalline physical hydrogels with shape-memory and self-healing properties. In: JOURNAL OF MATERIALS CHEMISTRY B, 7, 2019, 1581-1596
2019Yetiskin, Berkant and Tureyen, Oktay E. and Yilmaz, Atilla and Yakan, Sevil D. and Okay, Oya S. and Okay, Oguz: Single-, Double-, and Triple-Network Macroporous Rubbers as a Passive Sampler. In: ACS APPLIED MATERIALS \& INTERFACES, 11, 2019, 28317-28326
2019Altuncu, Seckin and Duman, Fatma Demir and Gulyuz, Umit and Acar, Havva Yagci and Okay, Oguz and Avci, Duygu: Structure-property relationships of novel phosphonate-functionalized networks and gels of poly(β-amino esters). In: EUROPEAN POLYMER JOURNAL, 113, 2019, 155-164
2018Guven, Melek N. and Altuncu, Merve S. and Bal, Tugba and Oran, Dilem C. and Gulyuz, Umit and Kizilel, Seda and Okay, Oguz and Avci, Duygu: Bisphosphonic Acid-Functionalized Cross-Linkers to Tailor Hydrogel Properties for Biomedical Applications. In: ACS OMEGA, 3, 2018, 8638-8647
2018Uzumcu, Ahmet T. and Guney, Orhan and Okay, Oguz: Highly Stretchable DNA/Clay Hydrogels with Self-Healing Ability. In: ACS APPLIED MATERIALS \& INTERFACES, 10, 2018, 8296-8306
2018Su, Esra and Okay, Oguz: Hybrid cross-linked poly(2-acrylamido-2-methyl-1-propanesulfonic acid) hydrogels with tunable viscoelastic, mechanical and self-healing properties. In: REACTIVE \& FUNCTIONAL POLYMERS, 123, 2018, 70-79
2018Argun, Aslihan and Gulyuz, Umit and Okay, Oguz: Interfacing Soft and Hard Materials with Triple-Shape-Memory and Self-Healing Functions. In: MACROMOLECULES, 51, 2018, 2437-2446
2018Uzumcu, Ahmet T. and Guney, Orhan and Okay, Oguz: Monitoring the Instant Creation of a New Fluorescent Signal for Evaluation of DNA Conformation Based on Intercalation Complex. In: JOURNAL OF FLUORESCENCE, 28, 2018, 1325-1332
2018Bilici, Cigdem and Karaarslan, Damla and Ide, Semra and Okay, Oguz: Toughness improvement and anisotropy in semicrystalline physical hydrogels. In: POLYMER, 151, 2018, 208-217
2009Oguz Okay: General properties of hydrogels. In: Gerald Gerlach, Karl-Friedrich Arndt, Hydrogel sensors and actuators, Springer Series on Chemical Sensors and Biosensors, Volume 6, Chapter 1. Springer, 2009. 1-15
2007Oguz Okay, Wilhelm Oppermann: Polyacrylamide - clay nanocomposite hydrogels: Rheological and light scattering characterization. In: Macromolecules, 2007, 3378-3387
2004Nermin Gundogan, Oguz Okay, Wilhelm Oppermann: Swelling, elasticity and spatial inhomogeneity of poly(N,N-dimethylacrylamide) hydrogels formed at various polymer concentrations. In: Macromolecular Chemistry and Physics, 2004, 814 -823
2002Nermin Gundogan, Demet Melekaslan, Oguz Okay: Rubber elasticity of poly(N-isopropylacrylamide) gels at various charge densities . In: Macromolecules , 2002, 5616-5622
2000Oguz Okay, S. Durmaz: Acrylamide / 2-acrylamido-2-methylpropane sulfonic acid-based hydrogels: Synthesis and characterization. In: Polymer, 2000, 3693-3704
2000Oguz Okay: Gel growth in free-radical crosslinking copolymerization: Effect of inactive gel radicals. In: Macromol. Theory Simul., 2000, 354
2000Oguz Okay, S. Durmaz: Phase separation during the formation of poly(acrylamide) hydrogels. In: Polymer, 2000, 5729-5735
2000Oguz Okay, S. Durmaz, B. Erman: Solution crosslinked poly(isobutylene) gels: synthesis and swelling behavior. In: Macromolecules , 2000, 4822-4827
2000Oguz Okay, S. B. Sariisik: Swelling Behavior of Poly(acrylamide-co-sodium acrylate) Hydrogels in Aqueous Salt Solutions: Theory versus Experiments. In: Eur. Polymer J., 2000, 393-399
2000Oguz Okay, D. Melekaslan: Swelling of strong polyelectrolyte hydrogels in polymer solutions: Effect of ion pair formation on the polymer collapse. In: Polymer, 2000, 5737-5747
1999Oguz Okay: Formation of Heterogeneous Styrene - Divinylbenzene Copolymer Networks: Theory versus Experiments. In: Journal of Applied Polymer Science, 1999, 2181-2195
1999Oguz Okay, D. Kaya, O. Pekcan: Free-radical Crosslinking Copolymerization of Styrene and Divinylbenzene: Real Time Monitoring of the Gel Effect Using Fluorescence Probe. In: Polymer, 1999, 6179-6187
1999Oguz Okay, Y. Yilmaz, D. Kaya, M. Keskinel, O. Pekcan: Heterogeneities during the formation of poly(sodium acrylate) hydrogels. In: Polymer Bull., 1999, 425-431
1999Oguz Okay, O. Pekcan, D. Kaya: Monitoring of critical opalescence by fluorescence during gelation of styrene and divinylbenzene. In: Eur. Polymer J., 1999, 2025-2029
1999Oguz Okayk: Phase Separation in Free-Radical Crosslinking Copolymerization: Formation of Heterogeneous Polymer Networks. In: Polymer, 1999, 4117-4129
1999Oguz Okay, E. Erbay: Pore-memory of Macroporous Styrene-Divinylbenzene Copolymer Beads. In: J. Appl. Polym. Sci., 1999, 1055-1062
1998Werner Funke, Oguz Okay, Betina Joos-Müller: Microgels- intramolecularly crosslinked macromolecules with a globular structure. In: Advances in Polymer Science , 1998, 139-234