Article
Materials Science, Multidisciplinary
Ramesh Sooryanarayana Bhat, Manjunatha Krishna Balakrishna, Poornesh Parthasarathy, Ampar Chitharanjan Hegde
Summary: Single-layer and multilayer alloy deposits were electroplated onto a mild steel substrate, consisting of Zn and Fe alloys with different compositions. The corrosion resistance of these deposits was evaluated using potentiodynamic polarization method, while their surface morphology, crystal structure, and Fe content were characterized using scanning electron microscopy, X-ray diffraction, colorimetry, and energy-dispersive X-ray spectroscopy, respectively. The microhardness of the coatings was measured using a Vickers indenter. It was found that the Zn-Fe multilayer coatings showed significantly improved corrosion resistance compared to the single-layer coating, making them crucial for the automotive industry and steel-based vehicle parts.
Review
Polymer Science
Rudolf Holze
Summary: Intrinsically conducting polymers undergo changes in molecular structure and material properties in highly oxidizing conditions or positive electrode potentials. These changes depend on experimental conditions and chemical environment. While these changes may be beneficial for some applications, they often negatively affect the material's performance.
Article
Chemistry, Applied
Fahanwi Asabuwa Ngwabebhoh, Tomas Saha, Jaroslav Stejskal, Miroslava Trchova, Dusan Kopecky, Jiri Pfleger
Summary: Conducting polymers, particularly polypyrrole, were used for surface modification of three different leathers. The polymer was deposited on collagen fibers, forming a thin layer with thickness ranging from 24 to 200 μm. The modified leathers showed changes in mechanical properties and sheet resistances, and their conductivity and electroactivity can potentially be utilized in intelligent leathers for footwear, heating elements, and energy storage.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Materials Science, Multidisciplinary
Zhen He, Chen Yu, Jiaming Liu, Zengcheng Miao, Yuxin Wang
Summary: Sb-doped SnO2 (SnO2-Sb) coatings with tailored properties and structure can be prepared by adjusting the preparation parameters. The effects of crucial parameters on the performance of SnO2-Sb coatings were investigated, and the optimal conditions for achieving high-quality coatings were determined. The morphology of the coatings was affected by changes in Sb content, while the cassiterite SnO2 phase remained unaffected.
Article
Chemistry, Analytical
Matthew S. Ting, Badri Narayanan Narasimhan, Jadranka Travas-Sejdic, Jenny Malmstrom
Summary: Conducting polymer hydrogel composites combine the elastic properties of hydrogels with the redox properties of conducting polymers to achieve out-of-plane actuation with excellent strain performance. The composite material maintains a stable Young's Modulus and exhibits higher actuation performance, potentially applicable in soft actuators, drug delivery, and cell culture studies.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Multidisciplinary
Paramvir Kaur, K. Singh
Summary: Transition metals (copper and nickel) are substituted in SrMnO3 to create oxygen vacancies and increase ionic conduction. The prepared samples are characterized for their structural, thermal, and conducting properties. The presence of secondary phases decreases grain growth and the coefficient of thermal expansion is between 9 and 11 x 10-6 degrees C-1. A significant increase in conductivity is observed at 600 degrees C, and Cu2+ substitution improves sinterability while Ni2+ substitution does not.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Physics, Applied
Yukihiro Tsugita, Shuichi Maeda
Summary: Conductive inks were developed by combining indium tin oxide (ITO) with polypyrrole. The zeta potentials of the resulting polypyrrole-ITO inks were found to be pH-dependent, with zero zeta potential at pH 5. Thermogravimetric analysis revealed the thermal behavior of ITO and its inks. The conductivities of the inks were measured and compared to the neat polymer, showing excellent conductivity even at low temperatures for LED lighting.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2022)
Review
Polymer Science
Nurul Akmaliah Dzulkurnain, Marliyana Mokhtar, Jahwarhar Izuan Abdul Rashid, Victor Feizal Knight, Wan Md Zin Wan Yunus, Keat Khim Ong, Noor Azilah Mohd Kasim, Siti Aminah Mohd Noor
Summary: This review focuses on the application of conducting polymers, particularly Polypyrrole (PPy), in electrochemical sensors. It discusses the theoretical background and applications of impedance and voltammetric analysis in electrochemical detection, as well as the use of PPy as a sensing material. Researchers, especially those without an electrochemical analysis background, are expected to benefit from this easy-to-understand summary of concepts and technologies used in electrochemical sensor research, particularly with PPy as a sensing material.
Article
Nanoscience & Nanotechnology
Jaroslav Stejskal, Irina Sapurina, Jarmila Vilcakova, Tomas Plachy, Michal Sedlacik, Constantin Bubulinca, Marek Goralik, Miroslava Trchova, Zdenka Kolska, Jan Prokes
Summary: The study successfully designed nanostructured hybrid materials that are both conducting and magnetic, which exhibit high conductivity and saturation magnetization, indicating potential applications.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Analytical
Moises do Amaral Amancio, Yonny Romaguera-Barcelay, Robert Saraiva Matos, Marcelo Amanajas Pires, Ariamna Maria Dip Gandarilla, Marcus Valerio Botelho do Nascimento, Francisco Xavier Nobre, Stefan Talu, Henrique Duarte da Fonseca Filho, Walter Ricardo Brito
Summary: TiO2 thin films were electrodeposited with different deposition times using electrophoretic method, and the structure, morphology and electrical conductivity of the films were found to be affected. Longer deposition time resulted in higher crystallinity, more irregular surface topography, increased overall thickness and decreased electrical conductivity of the films.
Article
Materials Science, Biomaterials
Matthew S. Ting, Joseph Vella, Brad J. Raos, Badri Narayanan Narasimhan, Darren Svirskis, Jadranka Travas-Sejdic, Jenny Malmstrom
Summary: This study investigates the properties of stimuli-responsive hydrogels containing conducting polymers under different temperatures and electrochemical stimulation. The results show significant changes in the Young's modulus and actuation of the hybrid hydrogel at the transition temperature, as well as demonstrated cell adhesion to the hybrid hydrogel.
BIOMATERIALS ADVANCES
(2022)
Article
Polymer Science
S. K. Safdar Hossain, Anis Farhana Abdul Rahman, Agus Arsad, Avijit Basu, Ai Ling Pang, Zakiah Harun, Muhammad Mudassir Ahmad Alwi, Syed Sadiq Ali
Summary: In this study, PPy nanoparticles with high conductivity were synthesized using a chemical oxidative polymerization-assisted ultra-sonication method. The influence of sonication parameters on the structure, morphology, and electrical properties of PPy was examined. Various analyses were performed to characterize the PPy, and the obtained PPy showed promising conductivity for applications in supercapacitors, sensors, and other smart electronic devices.
Article
Chemistry, Multidisciplinary
Stefano Rossi, Oliver Olsson, Shangzhi Chen, Ravi Shanker, Debashree Banerjee, Andreas Dahlin, Magnus P. Jonsson
Summary: By using an electroactive conducting polymer as a spacer layer, dynamic control of structural colors across the visible spectrum with high brightness is achieved, along with high peak reflectance. This electroactive cavity concept may have particular use in reflective displays by allowing for tuneable monopixels that eliminate brightness limitations of traditional subpixel-based systems.
ADVANCED MATERIALS
(2021)
Article
Biotechnology & Applied Microbiology
Abdulkader Masri, Sumayah Abdelnasir, Ayaz Anwar, Javed Iqbal, Arshid Numan, Priyanka Jagadish, Syed Shahabuddin, Mohammad Khalid
Summary: This study demonstrated the strong antimicrobial effects of a ternary nanocomposite containing conducting polymer polypyrrole, cobalt oxide, and silver nanoparticles against drug-resistant bacteria and a protist, while showing minimal cytotoxicity against human cells. These results suggest the potential of PPy-Co3O4-AgNPs in developing novel antimicrobial nanomaterials for biomedical applications.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Ying-Chuan Lin, Chieh-Tsung Lo
Summary: Electrospun carbon fibers were chemically activated using KOH to create porous structures and increase surface functionalities. This enhanced the affinity between the electrode and electrolyte, resulting in reduced charge-transfer resistance. However, excessive activation destroyed the internal structure of the fibers. Electrochemical testing showed that porosity parameters had a stronger impact on the specific capacitance than surface functionalities.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Physics, Applied
Florence Bally-Le Gall, Akmali Mokhter, Sophie Lakard, Severine Wolak, Philippe Kunemann, Philippe Fioux, Aissam Airoudj, Salima El Yakhlifi, Claire Magnenet, Boris Lakard, Vincent Roucoules
PLASMA PROCESSES AND POLYMERS
(2019)
Article
Chemistry, Physical
Nicolas Roosz, Myriam Euvrard, Boris Lakard, Lydie Viau
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2019)
Article
Materials Science, Multidisciplinary
Emmanuel Contal, Charmake Moussa Sougueh, Sophie Lakard, Abdeslam Et Taouil, Claire Magnenet, Boris Lakard
FRONTIERS IN MATERIALS
(2019)
Article
Chemistry, Physical
F. E. Jurin, C. C. Buron, S. Clement, A. Mehdi, B. Lakard, N. Martin, C. Filiatre
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2020)
Article
Chemistry, Analytical
Miguel Aller-Pellitero, Sara Santiago-Malagon, Jules Ruiz, Yasmine Alonso, Boris Lakard, Jean-Yves Hihn, Gonzalo Guirado, F. Javier del Campo
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Review
Chemistry, Multidisciplinary
Boris Lakard
APPLIED SCIENCES-BASEL
(2020)
Article
Materials Science, Multidisciplinary
S. Lakard, E. Contal, K. Mougin, C. Magnenet, B. Lakard
Article
Chemistry, Analytical
Abdeslam Et Taouil, Emmanuel Contal, Sophie Lakard, Boris Lakard
Summary: The electrochemical behavior of different functionalized carbazoles was studied using classical cyclic voltammetry, computational calculations, electrochemical simulations, and fast cyclic voltammetry. The presence of ethyl, tert-butyl, and phenyl groups in carbazoles affected the rate of dimerization of radical cations and their electrochemical polymerization. Theoretical calculations using DFT method were consistent with experimental results, providing further insights into the reactivity of carbazoles.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Jerome Dejeu, Amelie Cot, Patrick Rougeot, Boris Lakard, Sophie Lakard, Michael Gauthier
Summary: The development of new surfaces with high adhesion and conductivity for microdevice fabrication, specifically for 3D assembly of microcomponents, is a significant challenge. Polyaniline films prepared through electrochemical deposition in phosphoric acid solution showed high adhesion properties, stability, and conductivity, making them comparable to the best commercial glues. These materials have a wide range of potential applications in telecommunications, bioengineering, and MEMS.
Review
Chemistry, Analytical
Sophie Lakard, Ileana-Alexandra Pavel, Boris Lakard
Summary: Neurotransmitters like dopamine play crucial roles in the central nervous system, and quantifying dopamine levels is essential for preventing medical and behavioral issues. Electrochemical biosensing is a robust method with real-time measurement capabilities, making it the most viable option currently available.
Article
Chemistry, Applied
Emmanuel Contal, Sophie Lakard, Frederic Dumur, Boris Lakard
Summary: In this study, various carbazole derivatives were synthesized and electrochemically oxidized in acetonitrile. The properties of the resulting polycarbazole films were significantly influenced by the nature of the substituents, with films from monomers unsubstituted at the 9-position showing the most promising performance.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Chemistry, Analytical
Ileana-Alexandra Pavel, Sophie Lakard, Boris Lakard
Summary: Conductive polymers have gained attention for their unique properties and tunable structures, making them widely used in various applications. This review focuses on discussing the recent advances in manufacturing flexible electrochemical sensors, in response to the increasing demand for wearable personal sensing devices.
Article
Chemistry, Physical
Abhishek Kumar, Emmanuel Contal, Sophie Lakard, Frederic Dumur, Rita Meunier-Prest, Lydie Viau, Marcel Bouvet, Boris Lakard
Summary: In this study, a novel carbazole derivative was synthesized and covalently grafted onto an ITO surface using the electrochemical method. The electrografted organic film significantly improved the adhesion of the polymer films deposited on top of it. Furthermore, the polymer films on the functionalized ITO substrate exhibited excellent stability and their physicochemical properties remained unchanged.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Analytical
Ileana-Alexandra Pavel, Alexis Lasserre, Leo Simon, Jerome Rossignol, Sophie Lakard, Didier Stuerga, Boris Lakard
Summary: Incorporating sulfonated metallophthalocyanines into sensor materials can improve electron transfer for species detection. This study proposes a simple alternative to expensive sulfonated phthalocyanines by electropolymerizing polypyrrole with nickel phthalocyanine and an anionic surfactant. The obtained structure shows increased hydrophobicity, making it suitable for developing efficient gas sensors with low sensitivity to water. The materials tested show good effectiveness in detecting ammonia in the range of 100 to 400 ppm.
Article
Materials Science, Multidisciplinary
Cedric C. Buron, Tjasa Vrlinic, Tristan Le Gallou, Sophie Lakard, Aude Bolopion, Patrick Rougeot, Boris Lakard
ACS APPLIED POLYMER MATERIALS
(2020)
Article
Materials Science, Multidisciplinary
Katerina Skopalova, Itana Nusa Bubanja, Dragomir Stanisavljev, Nikola Cvjeticanin, Vera Kasparkova, Eliska Dad'ova, Erika Pavlikova, Marek Koutny, Marija Gizdavic-Nikolaidis, Petr Humpolicek
Summary: This study compares the biological properties of PANI prepared by different synthesis methods and oxidizing agents, which improves its potential applications in the biomedical field.
Article
Materials Science, Multidisciplinary
Hui-Ping Li, Cai-Yan Gao, Zhi-Ping Chen, Xin-Heng Fan, Lian-Ming Yang
Summary: In this study, a novel type of D-A non-fused-ring copolymers was designed and synthesized to overcome the trade-off relationship between electrical conductivity and Seebeck coefficient in organic semiconductors. The incorporation of fluorine atoms into the polymer backbone effectively increased the ordered degree of molecular stacking and improved both the electrical conductivity and Seebeck coefficient. The bimodal orientation of polymers played a crucial role in decoupling the correlation between electrical conductivity and Seebeck coefficient.
Article
Materials Science, Multidisciplinary
Mansour A. S. Salem, Amjad Mumtaz Khan, Hatem A. M. Saleh, Khalil M. A. Qasem, Mizna Ahmed, Aadil Shafi Bhat, Abdulaziz Abdullah Qasem Ali, Younes S. A. Ghanem, Ali Alrabie, Abdel-Basit Al-Odayni, Waseem Sharaf Saeed, Basheer Al-Anesi
Summary: This research focuses on the versatile substance, polyaniline/layered double hydroxide (PANI@Nd-Co/LDH), under solvothermal conditions. A thorough analysis of its structure and morphology was conducted using various analytical methods. The findings showed that PANI@Nd-Co/LDH exhibited highly sensitive and specific fluorescence detection of Pb(II) and Al(III), outperforming other heavy metal ions. The sensor demonstrated a turn-off fluorescence response for Pb(II) ions and a turn-on fluorescence response for Al(III) ions. The minimum detectable limits (MDL) were determined to be 9.6 nM for Pb(II) and 220 nM for Al(III). PANI@Nd-Co/LDH could be easily regenerated and reused for multiple cycles. The detection mechanisms involved the inner filter effect (IFE) for Pb(II) and the chelation-enhanced fluorescence (CHEF) effect for Al(III). These results highlight the excellent potential of PANI@Nd-Co/LDH in the detection and recognition of Pb(II) and Al(III) ions.
