Article
Polymer Science
Rongtao Liu, Zebiao Xu, Chen Zhao, Shiyang Zhang, Hongyu Zhou, Li Zhou, Yidong Liu, Yonggang Min
Summary: This study developed flexible composite electrodes by depositing polypyrrole on laser-induced graphene (LIG) for potential clinical treatment of nerve tissue regeneration. The fabricated composite electrodes showed excellent conductivity and wettability, and electrical stimulation significantly enhanced cell proliferation and differentiation.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Chemistry, Physical
Rongtao Liu, Xingwen Huang, Xiu Wang, Xiaokang Peng, Shiyang Zhang, Yidong Liu, Dong Yang, Yonggang Min
Summary: The study successfully prepared PLA/rGO/PPy composite nanofibers with stable conductivity, dense and continuous PPy on the surface, and significantly improved wettability. With the presence of PPy and rGO, the conductivity and stability of the composite nanofibers increased, and the proliferation and differentiation of PC-12 cells seeded on the surface were enhanced.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Oladipo Folorunso, Yskandar Hamam, Rotimi Sadiku, Suprakas Sinha Ray
Summary: This study thoroughly investigated the electrical properties of graphene-polypyrrole nanocomposites using a numerical model based on Simmons and McCullough equations. The results showed that tunneling resistance is a critical factor determining electron transport, and the electrical conductivity of the composite depends on the volume fraction of fillers.
Article
Electrochemistry
Nahid Rezvani Jalal, Tayyebeh Madrakian, Abbas Afkhami, Arash Ghoorchian
Summary: The study explored the use of conductive polymers for electrically controlled drug release, achieving efficient release of Leucovorin drug on graphene oxide nanoribbons-modified electrodes through one-step electropolymerization. The presence of conductive material GONRs significantly improved drug loading efficiency and controlled the release kinetics of Lu.
ELECTROCHIMICA ACTA
(2021)
Article
Materials Science, Multidisciplinary
Ji Xu, Yuan He, Yanan Sun, Xiuming Zhang, Yunfeng Yi, Wei Shi, Dongtao Ge
Summary: In this study, a bioactive material hydroxyapatite (HA) was introduced to construct a conductive polypyrrole (PPy)/HA composite, enhancing its bioactivity and osteoinductive capacity. Micron-topological morphology of scattered grid pattern was designed to further enhance the regulation ability of the coatings to the cells. In vitro test results showed that the micropatterned PPy/HA composite coatings exhibited good bioactivity and promoted mineral deposition and cell proliferation and osteogenic differentiation when accompanied by external electrical stimulation (ES).
Article
Chemistry, Physical
Quanlu Wang, Huimin Song, Wenqing Li, Shuhao Wang, Lei Liu, Tingxi Li, Yongqin Han
Summary: The polypyrrole/graphene composite aerogel prepared by a one-step hydrothermal method demonstrates excellent specific capacitance and electrochemical performance, showcasing features of high flexibility and light-weight, making it suitable for wearable and portable electronics applications.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Multidisciplinary
Ziru Yan, Kai Li, Dandan Shao, Qingyi Shen, Yi Ding, Shansong Huang, Youtao Xie, Xuebin Zheng
Summary: Restoration of nerve supply is crucial for bone defect repair, but often overlooked in the design of bone repair biomaterials. In this study, a ternary nanocoating with photoelectric conversion ability was developed for photoelectric stimulation of both bone and nerve repair. The nanocoating exhibited improved photo-electrochemical properties and enhanced osteoblastic differentiation and neurite outgrowth under blue LED exposure. The findings suggest that this nanocoating could be a promising approach to target nerve regeneration for stimulating osteogenesis in bone repair biomaterial design.
Article
Chemistry, Multidisciplinary
Ruquan Ren, Yan Zhong, Xueyong Ren, Yongming Fan
Summary: This article introduces a one-step hydrothermal method to fabricate oxygen-doped activated carbon/graphene composite hydrogels. The composite hydrogels have low cost, high specific surface area, and high conductivity, making them suitable for flexible and wearable energy storage devices. They exhibit excellent energy storage performance and cycling stability.
Article
Engineering, Electrical & Electronic
Bjarke Norrehvedde Jensen, Yuting Wang, Alice Le Friec, Sadegh Nabavi, Mingdong Dong, Dror Seliktar, Menglin Chen
Summary: A wireless electromagnetic neural stimulation patch has been developed, which combines electromagnetic induction and physical guidance cues to promote neural cell growth and treat neurological diseases. In vitro experiments confirmed the biocompatibility and efficacy of the patch's electromagnetic stimulation in promoting neurite outgrowth, demonstrating its great potential for non-invasive neurological therapeutics.
NPJ FLEXIBLE ELECTRONICS
(2023)
Article
Materials Science, Biomaterials
Alexandre Xavier Mendes, Adriana Teixeira do Nascimento, Serena Duchi, Anita F. Quigley, Lilith Caballero M. Aguilar, Chaitali Dekiwadia, Robert M. I. Kapsa, Saimon Moraes Silva, Simon E. Moulton
Summary: The development of electroactive cell-laden hydrogels has attracted attention in neural tissue engineering research. These hydrogels have inherent electrical properties that can regulate cell behavior and promote cell growth and proliferation when combined with electrically conducting materials. Different electrical stimulation protocols have been found to impact neuronal cells' survival and proliferation, providing new options for electroactive hydrogels and electrical stimulation in neural tissue engineering research.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Chemistry, Physical
Zhongyu Zhao, Haonan Wang, Huabo Huang, Liang Li, Xianghua Yu
Summary: The main research on preparing conducting polymer/graphene composite hydrogels has focused on hydrothermal synthesis and external gel accelerators. A composite hydrogel based on GO, PPy, and PANI was fabricated via vapor-liquid interfacial synthesis, with investigation into the effects of FeCl3 and GO on its formation, morphology, and performance. The addition of FeCl3 and GO was found to improve the composite hydrogel's specific capacitance and cyclic stability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Marziyeh Jannesari, Elham Asadian, Faezeh Ejehi, Niall J. English, Raheleh Mohammadpour, Pezhman Sasanpour
Summary: A polypyrrole-graphene oxide composite triboelectric nanogenerator with superior electrical outputs and bactericidal activity was developed. The addition of graphene oxide significantly enhanced the triboelectric effect of the electrodes. Under optimal conditions, the open-circuit voltage and short-circuit current reached 413.2 V and -41 μA, respectively. The composite electrode exhibited marked antibacterial activity, and the antibacterial mechanism was comprehensively investigated.
Article
Materials Science, Multidisciplinary
Maamon A. Farea, Hamed Y. Mohammed, Pasha W. Sayyad, Nikesh N. Ingle, Theeazen Al-Gahouari, Manasi M. Mahadik, Gajanan A. Bodkhe, Sumedh M. Shirsat, Mahendra D. Shirsat
Summary: In this study, a cost-effective carbon monoxide sensor based on PPy-GO composite material was developed, showing quick response, short recovery time, good repeatability, long-term stability, and high selectivity to carbon monoxide gases.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Biochemical Research Methods
Wanzhen Xu, Yiyun Zhang, Xifeng Yin, Liming Zhang, Yunfei Cao, Xiaoni Ni, Weihong Huang
Summary: A sensitive electrochemical sensor was developed by combining molecular imprinting technique with graphene-doped titanium nitride, demonstrating enhanced electrochemical properties and selectivity. With optimization, a linear relationship was observed in the range of 0.5 to 100 nmol L-1, with a detection limit of 0.19 nmol L-1. The sensor exhibited outstanding repeatability in repetitive experiments and showed high resistance to interferences, indicating great potential for environmental detection.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Article
Materials Science, Biomaterials
Christopher J. Brown, Thomas Simon, Chiara Cilibrasi, Peter J. Lynch, Rhiannon W. Harries, Aline Amorim Graf, Matthew J. Large, Sean P. Ogilvie, Jonathan P. Salvage, Alan B. Dalton, Georgios Giamas, Alice A. K. King
Summary: This study has developed a scaffold with good biocompatibility and mechanical properties that can promote cell proliferation. Additionally, it was found that this scaffold has a unique growth-promoting effect on an aggressive form of brain cancer in experiments without the addition of growth factors.
JOURNAL OF MATERIALS CHEMISTRY B
(2022)