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Electroactive aniline tetramer-spider silk composite fibers with high conductivity and mechanical strength were developed using a dip coating method. The fabricated spider silk composite fibers retain the high mechanical strength (0.92 GPa) and unique reversible relaxation-contraction behavior of spider dragline silks. The aniline tetramer modified on the silk surface imparted electroactive properties to the composite fibers. The color of aniline tetramer/spider silk composite fibers could be controlled by applying different pH values and voltages. Furthermore, the composite fiber's resistivity could reach 186 Ω m which can conduct electrical current to light LEDs. This study could provide a valuable guideline for developing highly-conductive electrochromic spider silks for use in E-textiles.
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http://dx.doi.org/10.1039/d2ra01065h | DOI Listing |
Angew Chem Int Ed Engl
September 2025
Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P.R. China.
The donor/acceptor (D/A) interfaces in bulk heterojunction (BHJ) organic solar cells (OSCs) critically govern exciton dissociation and molecular diffusion, determining both efficiency and stability. Herein, we design a double-cable conjugated polymer, SC-1F, to insert into a physically-blended D/A system to optimize the interface. We have found that SC-1F spontaneously segregates to the interface through favorable miscibility and heterogeneous nucleation with the acceptor.
View Article and Find Full Text PDFJ Chromatogr A
September 2025
State Key Laboratory of Bio-based Fiber Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China; Zhejiang Provincial Innovation Center of Advanced Textile Technology, Shaoxing 312000, China. Electronic address:
The identification of cellulose fibers from different sources remains a significant challenge across various fields due to their complex structural composition and diverse applications. In this study, pyrolysis gas chromatography/high-resolution mass spectrometry (Py-GC/HRMS) was employed to identify cellulose fibers and fabrics utilizing a relative ratio approach based on pyrolyzate yield, with levoglucosan (LG) as the primary peak, furfural (FF) and 5-methyl-2(3H)-furanone (α-AL) as reference peaks. Initially, four cellulose fibers had large discrepancies in pyrolyzate yield relative ratios when pyrolyzed at 600°C.
View Article and Find Full Text PDFJ Colloid Interface Sci
September 2025
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China. Electronic address:
Polyimide (PI) faces significant challenges in highly integrated and high-frequency electronic devices due to its inherently low thermal conductivity and relatively high dielectric constant (D). In this study, topologically micro-crosslinked PI films were synthesized by incorporating highly conjugated multi-amino polydiacetylene (MAPDA) into a fluorinated PI matrix. The unique alkene-alkyne alternating conjugated structure of MAPDA, combined with the strong electron-withdrawing trifluoromethyl groups in the matrix, promotes charge redistribution and reduces the dipole moment and polarizability.
View Article and Find Full Text PDFFASEB J
September 2025
Department of Plastic Surgery and Burn, Third XiangYa Hospital, Central South University, Changsha, Hunan, China.
Defective wounds pose health risks, and treatment is challenging. Umbilical cord-derived mesenchymal stem cells (UCMSCs) show promise for healing. Primary UCMSCs were isolated and extracted in vitro, and the proliferation and differentiation characteristics were detected by flow cytometry and trilineage differentiation, and a 3D spherical cell culture was performed.
View Article and Find Full Text PDFACS Appl Mater Interfaces
September 2025
Department of Mechanical Engineering, State University of New York at Binghamton, Binghamton, New York 13902, United States.
Soft conductive composites are significant components of soft and wearable electronics. Existing soft conductive composites encounter difficulties in attaining 10% of copper's electrical conductivity while maintaining high stretchability. In this work, a novel "soft conductive junction" concept is introduced to overcome the conductivity-stretchability trade-off.
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