Review
Nanoscience & Nanotechnology
Seungju Kang, Tae Woong Yoon, Gwan-Yeong Kim, Boseok Kang
Summary: This article provides an overview of the formation strategies and applications of conjugated polymer nanoparticles, along with their corresponding experimental methods. By converting them into nanoparticle dispersions in water or alcohols, the use of toxic solvents can be avoided and application utility can be enhanced.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Analytical
Guanghui Tian, Feng Guo, Chuanbin Fan, Ziao Zong, Junli Wang, Jiakun Xu
Summary: Two hypercrosslinked microporous carbazole-based polymers (C-POP-1 and C-POP-2) were synthesized using an efficient Friedel-Crafts coupling approach. The porous structures of the polymers were controlled by regulating the length of two-node linear organic blocks. The aptasensor based on C-POP-2 demonstrated excellent electrochemical detection behavior for penicillin, allowing for quantitative detection of trace penicillin in real samples.
MICROCHEMICAL JOURNAL
(2023)
Review
Nanoscience & Nanotechnology
Liam R. MacFarlane, Huda Shaikh, J. Diego Garcia-Hernandez, Marcus Vespa, Tomoya Fukui, Ian Manners
Summary: pi-Conjugated polymers exhibit diverse electronic and optical properties. This review discusses the preparation of self-assembled nanoparticles from these polymers and their applications in optoelectronics, biomedical imaging and therapy, photocatalysis, and sensing. The development of pi-conjugated polymers has opened up new possibilities for functional organic materials similar to inorganic semiconductors, with nanoparticles based on these polymers showing promise in various emerging applications.
NATURE REVIEWS MATERIALS
(2021)
Article
Chemistry, Applied
Duygu Cevher, Sevki Can Cevher, Ali Cirpan
Summary: In this study, benzotriazole-based homopolymer (P-TBtz), copolymer (C-TBtzEdot), and bilayer composites (BTBtzEdot and B-EdotTBtz) were successfully prepared by electrochemical polymerization. The selected materials introduced multichromic property and improved charge storage capacity to the polymer films. Various electrochemical and optical characterizations were performed to evaluate the properties of the films. C-TBtzEdot exhibited the highest capacitance value among the films.
Article
Chemistry, Applied
Yan Gao, Qing Yin, Xiaoye Geng, Xingxiang Zhang, Wei Li, Y. Gao, X. Geng, X. Zhang, W. Li
Summary: This study investigates the influence of the length of the alkyl side chain of comb-like acrylate polymer on the photochromic properties of Spiropyran (SP) materials. It demonstrates that comb-like acrylate polymer nanoparticle latexes with longer side chains exhibit better photoresponsivity and photodegradation resistance compared to those with shorter side chains. The findings suggest potential applications in reversible optical data storage, photo-responsive sensing systems, ultraviolet intensity indicators, and flexible wearable UV protective clothing.
Article
Biophysics
Felix Hempel, Jessica Ka Yan Law, Thanh Chien Nguyen, Ruben Lanche, Anna Susloparova, Xuan Thang Vu, Sven Ingebrandt
Summary: The study investigated single-cell adhesion on organic electrochemical transistors using an impedimetric readout method, demonstrating single-cell resolution and potential future applications.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Electrochemistry
Hebing Pei, Fang Chen, Wei Guo, Qianqian Jia, Ruibin Guo, Nijuan Liu, Zunli Mo
Summary: Chirality is a basic attribute of objects in three-dimensional space and is widely present in nature. A new type of chiral NGQDs was obtained by covalently grafting L/D-cysteine to NGQDs. The chiral NGQDs were found to specifically identify L/D-tartaric acid isomers and the mechanism of chiral recognition was discussed through molecular simulation and docking calculations. This study expands the application range of graphene quantum dots and provides new ideas for the preparation of chiral inorganic nanomaterials.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Nanoscience & Nanotechnology
James Alfred Isaac, Lea Rose Mangani, Didier Devaux, Renaud Bouchet
Summary: Solid-state batteries are revolutionary technologies with increased safety and energy density compared to liquid-electrolyte-based batteries. Composite polymer/ceramic electrolytes are promising candidates for reliable solid-state batteries due to the potential synergy between organic and inorganic materials. This study thoroughly investigates multilayer systems using electrochemical impedance spectroscopy (EIS) and proposes models to analyze the transport properties of the polymer and ceramic electrolytes. Interesting findings include the decoupling of polarization resistance components and the independence of the polymer/ceramic interfacial capacitance on electrolyte salt concentration.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Rongrong Yuan, Hongming He
Summary: A carbazole-bearing porous organic polymer (POP) was successfully prepared through an efficient reaction and can be used to fabricate an electrochemical aptasensor for rapid and precise detection of trace PCL with excellent monitoring performance.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
George Zardalidis, Dimitrios Chatzogiannakis, Emmanouil Glynos, Filippos Farmakis
Summary: The contact between solid polymer electrolytes and electrodes in lithium-ion batteries is crucial for cell capacitance and life. In this study, low-molecular polyethylene glycol electrolytes with different chain termination groups showed varying electrochemical stability when in contact with metallic lithium. The electrolyte with hydroxy chain ends exhibited poor behavior and high decomposition, while the one with methoxy chain ends formed a stable electrolytic system.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Physics, Applied
Alexandru Gheorghiu, Daisy Yang, Iliana Delcheva, Craig Priest, Melanie MacGregor
Summary: Plasma-polymerized polyoxazoline (POx) thin films can be used as a fast and solvent-free method for electrode functionalization. This study investigated the effects of current exposure, extended incubation, and repeated electrode rinses on the stability of polymethyloxazoline thin films. The films were found to become more diffusive after incubation and rinse steps, and changes in nanotopography were observed after exposure to current, suggesting a change in the film structure.
PLASMA PROCESSES AND POLYMERS
(2023)
Article
Polymer Science
Ke Zheng, Shenggui Chen, Haochun Zhan, Junpeng Situ, Ziying Chen, Xiaxia Wang, Dongdong Zhang, Lei Zhang
Summary: In this study, a strategy for efficient synthesis of phenolic polymers was established by enzymatic polymerization in a nanoreactor. The results indicated that this method could efficiently synthesize phenolic polymers in water and allow for easy separation of the products through temperature control, while the catalyst could be reused.
Article
Chemistry, Analytical
Sida Ren, Xi Zhang, Zhijie Li, Xiaoxia Jian, Junjian Zhao, Yan-Yan Song
Summary: An electrochemical biosensor for Gram-negative bacteria, based on a conductive polymer with artificial muscle properties, was established with specific and sensitive recognition. The sensor achieved effective recognition through specific carbohydrate-carbohydrate interaction, enhanced by impulse voltage application. With a low cost, high efficiency, and rapid detection time, the biosensor shows promising potential for application in portable devices and paving the way for the construction of electrochemical biosensors.
Article
Chemistry, Analytical
Ibrar Alam, Benchaporn Lertanantawong, Thana Sutthibutpong, Primana Punnakitikashem, Piyapong Asanithi
Summary: A tryptophan (Trp) sensor based on molecularly imprinted polymer was developed for sensitive and selective determination of Trp using electrochemical impedance spectroscopy. The sensor exhibited a wide linear range and low detection limit, and was successfully applied for Trp determination in complex samples such as milk and cancer cell media.
Article
Polymer Science
Dilber Esra Yildiz, Duygu Cevher, Mustafa Yasa, Ali Cirpan, Levent Toppare
Summary: The research on conjugated polymers has shown their potential in developing new energy storage devices, leading to an acceleration in supercapacitor studies. Selenophene-containing conjugated polymers synthesized through palladium-catalyzed Suzuki polymerization reaction were utilized to fabricate electrodes for supercapacitors. The electrochemical behavior of the polymer electrodes was evaluated using CV and EIS, with specific capacity measurements obtained for different electrode compositions.
JOURNAL OF POLYMER SCIENCE
(2022)
Article
Materials Science, Textiles
Havva Baskan, Imren Esenturk, Sibel Dosler, A. Sezai Sarac, Hale Karakas
Summary: Silver nanoparticles were prepared by reduction of silver salt using polyacrylonitrile and poly(acrylonitrile-co-itaconic acid) polymers, showing P(AN-co-IA) to be more effective. The presence of silver nanoparticles significantly increased electrical conductivity of nanofibers and enhanced antimicrobial activities against various microorganisms for up to 168 hours. The silver-containing nanofibers are promising for biomedical and pharmaceutical applications.
JOURNAL OF INDUSTRIAL TEXTILES
(2021)
Article
Materials Science, Biomaterials
Imren Esenturk, Selin Gumrukcu, Ayse Buse Ozdabak Sert, Fatma Nese Kok, Sibel Dosler, Sevgi Gungor, M. Sedef Erdal, A. Sezai Sarac
Summary: Polyurethane/polyvinylpyrrolidone/silk nanofibers loaded with lipophilic antifungal drug sertaconazole nitrate were prepared and evaluated for their drug release profiles, morphology, compatibility, and biocompatibility. The nanofibers exhibited sustained drug release and fungistatic activity against Candida albicans, suggesting their potential as topical drug delivery systems for fungal infections.
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS
(2021)
Article
Energy & Fuels
M. Giray Ersozoglu, Hurmus Gursu, Metin Gencten, A. Sezai Sarac, Yucel Sahin
Summary: Graphene-based electrodes have great potential for use as positive electrode material in vanadium redox flow batteries. This study successfully prepared binder-free sulfur-doped graphene oxide electrodes in one step and demonstrated improved performance in terms of discharge capacity and energy efficiency for vanadium redox batteries.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Polymer Science
Remzi Gurbuz, Baran Sarac, Viktor Soprunyuk, Eray Yuece, Juergen Eckert, Ali Ozcan, A. Sezai Sarac
Summary: Producing rubbery polymer nanofibers through electrospinning is challenging due to fiber entanglement, however, homogeneous CNT-filled PBu/PEO composite material shows improved physical properties. These composites can be used to create bio-composite scaffold and fibrous antibacterial membrane scaffolds with uniform diameter distribution.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Article
Chemistry, Physical
Baran Sarac, Tolga Karazehir, Eray Yuce, Marlene Muehlbacher, A. Sezai Sarac, Juergen Eckert
Summary: Improving the efficiency of hydrogen storage and release using metallic glass nanofilms offers green solutions for nanoscale energy applications. Specific sizes and configurations of the hydrogen storage components demonstrate high electrochemical performance, with high specific pseudocapacitance and conductive behavior.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Baran Sarac, Tolga Karazehir, Matej Micusik, Celine Halkali, Dominik Gutnik, Maria Omastova, A. Sezai Sarac, Juergen Eckert
Summary: In transition metal-based alloys, nonlinearity in current at large cathodic potentials challenges the reliability of linear Tafel slopes for evaluating electrocatalytic hydrogen activity. High-precision nonlinear fitting at low current densities can overcome this challenge by describing the kinetics of electrochemical reactions due to charge transfer. The study demonstrates the practicality and high accuracy of a general evaluation criterion for assessing electrocatalytic reactions in different metallic alloy systems.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Baran Sarac, Yurii P. Ivanov, Matej Micusik, Tolga Karazehir, Barbara Putz, Sylvain Dancette, Maria Omastova, A. Lindsay Greer, A. Sezai Sarac, Jurgen Eckert
Summary: This study investigates the kinetics of hydrogen-metal interactions in metallic glass and crystalline nanofilms. Results show that nanometer-sized crystals are homogeneously dispersed in the matrix after hydrogenation, and the impedance and capacitance of the metallic glass vary depending on the pore architecture of the substrate.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Electrochemistry
Tolga Karazehir, Baran Sarac, Hans-Detlev Gilsing, Juergen Eckert, A. Sezai Sarac
Summary: A porous network of bromomethyl-substituted 3,4-propylenedioxythiophene polymer was developed as a conductive support for methanol oxidation, with well-dispersed platinum nanoparticles providing efficient catalytic performance. The Pt/PProDOT-Br assemblies showed promising results for methanol oxidation in alkaline media, attributed to the larger surface area and porous nature of the PProDOT-Br support. Additionally, the high capacitance of the developed porous network PProDOT-Br suggests potential applications in supercapacitors.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Baran Sarac, Yurii P. Ivanov, Tolga Karazehir, Marlene Muehlbacher, A. Sezai Sarac, A. Lindsay Greer, Jurgen Eckert
Summary: The multilayer amorphous and crystalline Pd-Si based nanosheets demonstrate exceptionally high hydrogen storage capabilities when stacked in the right order, offering potential for enhanced hydrogen storage and production through smart design applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Electrochemistry
M. Giray Ersozoglu, Hurmus Gursu, Selin Gumrukcu, A. Sezai Sarac, Yucel Sahin
Summary: The aim of this study is to convert commercial carbon fiber into heteroatom-doped graphene-like surfaced fibers through an eco-friendly and fast intercalation/semi-exfoliation mechanism, and to improve the hydrogen evolution reaction performance of the catalyst.
Article
Materials Science, Multidisciplinary
B. Sarac, T. Karazehir, E. Yuece, M. Muehlbacher, A. S. Sarac, J. Eckert
Summary: This study focuses on tuning the pore architecture and film thickness of mesoporous Pd-Cu-Si thin films sputtered on Si/SiO2 substrates to enhance their electrocatalytic and hydrogen sorption/desorption activities. The different thicknesses and pore diameters of the electrocatalysts show varying hydrogen sorption performance and electrocatalytic activity, making them applicable for standard fuel cells and rapid storage systems. The charge transfer resistance as described by an equivalent circuit model shows a strong correlation with Tafel slopes, indicating the potential utility of the thin films as nano-chargers and hydrogen sensors.
MATERIALS & DESIGN
(2021)
Article
Chemistry, Physical
Baran Sarac, Tolga Karazehir, Hans-Detlev Gilsing, Juergen Eckert, A. Sezai Sarac
Summary: The interactions between the electrolyte and electroactive species in redox active PProDOT derivatives are enhanced by better-performing electrodes for electrochemical energy conversion and storage. A new equation is proposed to assess the kinetics of the diffusion-limited adsorption process, and electron-donating groups attached to the monomer stabilize radical cation and dication formation. The findings of this study provide new insights into the factors requiring attention in tailoring assemblies for organic electronic applications.
MOLECULAR SYSTEMS DESIGN & ENGINEERING
(2022)
Article
Electrochemistry
Keziban Huner, Abdulkadir Sezai Sarac
Summary: This study focuses on the electrochemical properties of Poly(ProDOT) in different electrolytic media with varying solvent dielectric constants. Results show that Poly(ProDOT) synthesized in the medium with the lowest dielectric constant exhibited the highest capacitance and charge density, while impedance magnitudes increased as dielectric constant increased. All films showed capacitive impedance responses at lower frequencies, with the highest capacitance observed for the film synthesized in the medium with the lowest dielectric constant.
JOURNAL OF ELECTROCHEMICAL SCIENCE AND ENGINEERING
(2021)
Article
Chemistry, Physical
Selin Gumrukcu, Viktor Soprunyuk, Baran Sarac, Eray Yuece, Juergen Eckert, A. Sezai Sarac
Summary: The study synthesized Fc-containing monomers from ferrocene carboxylic acid and 2-hydroxyethyl acrylate, and polymerized them using the ATRP method. Blending polymers with different FcP content led to improvements in thermoelastic and electrical properties in PAN and PAN-FcP blend nanofibers.
MOLECULAR SYSTEMS DESIGN & ENGINEERING
(2021)
Article
Chemistry, Physical
Tolga Karazehir, Baran Sarac, Hans-Detlev Gilsing, Selin Gumrukcu, Jurgen Eckert, A. Sezai Sarac
Summary: By studying the relationship between the electropolymerization and capacitive properties of poly(3,4-propylenedioxythiophene) derivatives, it is found that the substituents can influence the crystal structures and conductivity of the polymers.
MOLECULAR SYSTEMS DESIGN & ENGINEERING
(2021)
