Article
Engineering, Environmental
Bo Liu, Jianghua Li, Zhongtian Zhang, James D. Roland, Bruce P. Lee
Summary: This study presents a novel hydrogel with pH responsive antibacterial activity. The hydrogel contains a pH responsive and reversible catechol-boronate linkage, which exhibits antimicrobial property under acidic conditions and becomes non-cytotoxic under basic conditions. The hydrogel can recover its antibacterial property when exposed to acidic pH. The strategy using catechol-Cl and phenylboronic acid provides a new approach for designing hydrogels with pH responsive antibacterial activity and reduced cytotoxicity.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Md Saleh Akram Bhuiyan, James Manuel, Fatemeh Razaviamri, Bruce P. Lee
Summary: This study explores the feasibility of deactivating and reactivating a catechol-containing smart adhesive electrochemically while in direct contact with a nonconductive surface. The adhesive is coated over an aluminum mesh-attached poly-(dimethylsiloxane) (AM-PDMS) substrate. A silver (Ag) counter electrode is coated in the periphery of the adhesive-substrate interface to deactivate the adhesive attached to nonconductive surfaces including glass and poly-(methyl methacrylate) (PMMA) substrates. The adhesion strength of the adhesive towards nonconductive surfaces decreases by 98% after in situ application of electricity. The deactivation rate can be tuned with the applied voltage level, exposure time to the applied voltage, surface area of the adhesive interface, and aluminum mesh size. The deactivated adhesive can be electrochemically reactivated by reversing the electrode polarity up to 3 cycles using catechol-boronate complexation chemistry.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Yuexin Cui, Liying Yin, Xiaoya Sun, Ning Zhang, Nan Gao, Guangshan Zhu
Summary: A novel non-catechol-based wet adhesive is reported, which is formed by self-assembly in aqueous solution, showing reversible, tunable, and strong adhesion, as well as high efficacy in promoting biological wound healing with inherent antimicrobial properties.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Jingsi Chen, Hongbo Zeng
Summary: The adhesion and self-healing behavior of mussel byssus have inspired the development of self-healing materials. This Perspective provides an overview of recent progress in the detection, quantification, and utilization of mussel-inspired reversible molecular interactions, offering insights into the design strategies of advanced self-healing materials.
Article
Engineering, Chemical
Haiqin Tang, Qi Chen, Xiang Ke, Hao Wang, Moyan Li, Jing Xie, Jun Luo, Jianshu Li
Summary: This study proposes a strategy to prepare pH-responsive reversible wet adhesive hydrogels using the structural advantage of urushiol. The resulting hydrogel demonstrates reliable and universally applicable pH-responsive reversible adhesion, as well as remarkable improvements in mechanical properties.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Biomedical
Mario C. Fonseca, Ana Catarina Vale, Rui R. Costa, Rui L. Reis, Natalia M. Alves
Summary: Inspired by mussel bioadhesion, researchers developed adhesive membranes using catechol-modified polysaccharides and a simple compaction method. These membranes exhibited strong adhesive properties and could also incorporate bioactive glass nanoparticles to stimulate mineralization, making them potentially suitable for hard tissue regeneration.
JOURNAL OF FUNCTIONAL BIOMATERIALS
(2023)
Article
Polymer Science
Tong Wu, Liu He, Dan-dan Zheng, Xiao-ling Wu, Wei-ang Luo, Cong-hui Yuan, Li-zong Dai
Summary: This article focuses on the research progress in the functionalization of polymer materials related to the manipulation of catechol groups by using boronate ester bonds. It discusses molecular, micro/nano surface, and macroscopic surface adhesion, as well as their applications in material modification and assembly.
ACTA POLYMERICA SINICA
(2022)
Article
Chemistry, Multidisciplinary
Yu-Xia Li, Wen Zhong, Jin-Jian Zhou, Shi-Chao Qi, Xiao-Qin Liu, Lin-Bing Sun
Summary: This study reports a smart pi-complexation adsorbent that can adjust the pi-complexation of active sites via light irradiation, thereby regulating the performance of the adsorbent. The results show that the CO uptake of the adsorbent can be significantly changed by altering the light irradiation, providing a clue for designing target-specific smart materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Materials Science, Textiles
Euijin Shim, Carla Silva, Artur Cavaco-Paulo, Hye Rim Kim
Summary: This study investigated the effects of modifying bacterial cellulose as a template on the in situ polymerization of catechol by laccase. The modification involved sulfonation and the entrapment of carboxymethyl cellulose. After the in situ polymerization, conductive and colored bacterial cellulose composites were obtained. The results suggest the potential of modified bacterial cellulose as a template for the formation of functional polymers and composite materials.
TEXTILE RESEARCH JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Min A. Gwak, Bo Min Hong, Ji Min Seok, Su A. Park, Won Ho Park
Summary: In this study, an HA-catechol conjugate (HA-Cat) was synthesized by reacting the HA polymer with dopamine to improve its adhesion to various substrates. The addition of tannic acid (TA) improved both the adhesive and compressive properties of the HA-Cat hydrogels, showing great potential as cost-effective and biocompatible medical adhesives.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Polymer Science
Feifei Li, Lin Zhou, Ziqi Zhang, Mengmeng Li, Lin Lei
Summary: Facial white light-emitting diode (LED) induced reversible deactivation radical polymerization (RDRP) of methacrylate monomers was successfully conducted using sub-ppm-level organic dyes as organocatalysts. The resultant poly(methacrylate) exhibited controlled molecular weights and polydispersity indices, showcasing high monomer versatility.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Materials Science, Composites
Guo Jiang, Wenyong Dong, Kai Liao, Tao Liu
Summary: In this study, a PCPA layer was formed on the surface of boron nitride through chemical and graft modification, improving the thermal property of silicone rubber composites. Blocky SiC and flaky BN were then introduced to further enhance the thermal conductivity of the composites.
POLYMER COMPOSITES
(2022)
Article
Engineering, Chemical
Kian Bashandeh, Alexandria Marchert, Uno Takayuki, Andreas A. Polycarpou, Jacob Meyer, Pixiang Lan
Summary: The study focuses on investigating the bonding strength of ATSP adhesive on aluminum substrates prepared with conventional sandblasting and laser surface texturing. The results show that laser surface texturing significantly improves bond strength compared to sandblasting, with different failure modes observed for the two substrate preparation methods. The role of surface topography in bond/debond experiments was also explored and correlated to the results.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2021)
Article
Mechanics
Alberto Ciampaglia, Raffaele Ciardiello, Federico Cesano, Giovanni Belingardi, Valentina Brunella
Summary: This study investigates the effect of carbon black dispersion on the mechanical and electrical properties of polyamide 6 and 6.6 matrices. By increasing the carbon black concentration, the elastic modulus increases by 12%. Results show that carbon black can functionalize thermoplastic polymers by activating conductive networks, with a percolation threshold of 13% wt. The sensitivity of conductivity to mechanical strain is analyzed in both direct and alternate current, and a novel model for estimating the material's gauge factor variation with applied electric frequency is proposed.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Environmental
Guohua Li, Xianjin Qi, Jiahao Shi, Guizhi Yan, Heng Wang, Aimin Zhang
Summary: Arsenic pollution is a serious global problem that poses a threat to human and environmental health. Fe3O4 has been found to effectively remove arsenic from wastewater at high temperatures through a combination of physical adsorption and chemical precipitation.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Arnab Mondal, Ryan Devine, Lori Estes, James Manuel, Priyadarshini Singha, Juhi Mancha, Marley Palmer, Hitesh Handa
Summary: This study utilized bioinspired approaches to fabricate a polymer composite with a versatile surface that can reduce bacterial infections and platelet adhesion. Results showed that combining NO-releasing CarboSil with PTFE coating can drastically reduce infection and platelet adhesion.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Engineering, Environmental
Bo Liu, Chao Zhou, Zhongtian Zhang, James D. Roland, Bruce P. Lee
Summary: The study synthesized a series of halogenated dopamine methacrylamide compounds with broad-spectrum antimicrobial activity for designing bioadhesives and coatings. Experimental and simulation studies demonstrated their efficient bactericidal function, especially against multidrug-resistant bacteria, providing new potential for designing multifunctional bioadhesives and coatings.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Biochemistry & Molecular Biology
Seyedehfatemeh Razaviamri, Kan Wang, Bo Liu, Bruce P. Lee
Summary: This review explores catechol-based antimicrobial polymers that utilize various mechanisms such as surface anchoring, metal ion binding, and generation of reactive oxygen species to exert antimicrobial properties.
Article
Chemistry, Analytical
Rasoul Bayaniahangar, Shahab Bayani Ahangar, Zhongtian Zhang, Bruce P. Lee, Joshua M. Pearce
Summary: This study developed soft magnetic helical coil actuators using embedded 3D printing techniques, achieving linear actuation of over 300% and bending actuation of over 80 degrees. The research also demonstrated that 3D printed helical coils with 10% iron oxide nanoparticles can be used as untethered soft robots capable of locomotion on inclines under an applied magnetic field.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Review
Chemistry, Multidisciplinary
Rattapol Pinnataip, Bruce P. Lee
Summary: The oxidation state of catechol plays a crucial role in adhesion, catechol cross-linking, and the generation of ROS. Tuning the catechol oxidation state allows for the design of stimuli-responsive adhesives and the utilization of ROS byproducts for antimicrobial and antiviral applications.
Editorial Material
Robotics
Bruce P. Lee
Summary: The mussel-inspired electro-responsive adhesive hydrogels allow robots to climb on conductive surfaces, expanding their range of capabilities.
Article
Chemistry, Physical
Ekrem Ozkan, Arnab Mondal, Megan Douglass, Sean P. Hopkins, Mark Garren, Ryan Devine, Rashmi Pandey, James Manuel, Priyadarshini Singha, James Warnock, Hitesh Handa
Summary: This study successfully fabricated two types of ultra-low fouling surfaces to enhance the biocompatibility of medical grade silicone rubber tubes. The coatings showed superior resistance to clot formation and platelet adhesion, as well as significant reduction in bacterial adhesion and biofilm formation, demonstrating their potential for preventing biofilm and thrombosis formation on medical devices.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Review
Biochemistry & Molecular Biology
Caleigh R. Dunn, Bruce P. Lee, Rupak M. Rajachar
Summary: Traditional open surgery complications are mainly caused by surgical trauma, while minimally invasive surgery can reduce complications. Thermomagnetic-responsive microgrippers are microscopic devices that can self-actuate in response to temperature and are used for more precise surgical targeting and biopsies.
Article
Engineering, Biomedical
Maria P. Kwesiga, Amani A. Gillette, Fatemeh Razaviamri, Margaret E. Plank, Alexia L. Canull, Zachary Alesch, Weilue He, Bruce P. Lee, Roger J. Guillory II
Summary: This study reveals the relationship between the secretion of reactive oxygen and nitrogen species (ROS-RNS) and the corrosion of degradable magnesium materials. The research found that the corrosion of Mg materials was more severe when stimulated by proinflammatory macrophages, while the morphology and elemental bulk of AZ61 materials also changed. Macrophages were found to be more viable in the degradative environment generated by Mg materials. These findings highlight the complexity of cellular-driven acute inflammatory responses to different degradable magnesium materials.
BIOACTIVE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Md Saleh Akram Bhuiyan, James Manuel, Fatemeh Razaviamri, Bruce P. Lee
Summary: This study explores the feasibility of deactivating and reactivating a catechol-containing smart adhesive electrochemically while in direct contact with a nonconductive surface. The adhesive is coated over an aluminum mesh-attached poly-(dimethylsiloxane) (AM-PDMS) substrate. A silver (Ag) counter electrode is coated in the periphery of the adhesive-substrate interface to deactivate the adhesive attached to nonconductive surfaces including glass and poly-(methyl methacrylate) (PMMA) substrates. The adhesion strength of the adhesive towards nonconductive surfaces decreases by 98% after in situ application of electricity. The deactivation rate can be tuned with the applied voltage level, exposure time to the applied voltage, surface area of the adhesive interface, and aluminum mesh size. The deactivated adhesive can be electrochemically reactivated by reversing the electrode polarity up to 3 cycles using catechol-boronate complexation chemistry.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Engineering, Environmental
Bo Liu, Zhongtian Zhang, Bingqian Li, Qingping Liu, Bruce P. Lee
Summary: In this study, a novel catalytic system composed of mussel inspired adhesive moiety, catechol, and iron oxide nanoparticles (IONPs) was developed to generate hydroxyl radical at pH 7.4 for free radical polymerization of various water-soluble acrylate-based monomers. The system does not require additional initiators and the formed bilayer hydrogel exhibits magnetic and improved mechanical properties.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Kan Wang, Lokanath Patra, Bo Liu, Zhongtian Zhang, Ravindra Pandey, Bruce P. Lee
Summary: The feasibility of salicylhydroxamic acid (SHAM) as a pH-responsive, switchable adhesive molecule was explored. SHAM-containing adhesive demonstrated strong, wet adhesion to various surfaces at pH 5, comparable to catechol. The adhesive properties of SHAM decreased with increasing pH but fully recovered at pH 5, indicating superior stability towards base treatment.
CHEMISTRY OF MATERIALS
(2023)