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We report the synthesis of lead piperidine and lead tetrahydroquinoline dithiocarbamate (DTC) complexes and their use as single source precursors for the preparation of anisotropic PbS nanoparticles. The complexes were thermolysed in coordinating solvents such hexadecylamime (HDA), tri-n-octylphosphine oxide (TOPO), oleylamine (OA) and decylamine (DA) at various reaction temperatures. The variation of the reaction conditions and precursors produced PbS particles with shapes ranging from spheres to cubes and rods. The size of the particles is generally larger than those synthesized by conventional precursor routes. The electron microscopy and X-ray diffraction data confirm the particles to be very crystalline with the dominant cubic rock salt phase present in all samples.
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http://dx.doi.org/10.1039/c2dt30282a | DOI Listing |
Volume holographic storage with orthogonal polarization interference effectively enhances the capacity and flexibility of data access. In this study, we fabricated a novel type of photoinduced anisotropic polymer, titanocene dispersed poly methyl methacrylate (TI/PMMA), which is sensitive to the polarization state of the optical transmitted field. Using interference coupling equipment with two orthogonal linearly polarized beams (S and P waves), we investigated the diffraction characteristics of polarization holography within TI/PMMA polymers.
View Article and Find Full Text PDFMater Today Bio
August 2025
The Third Affiliated Hospital, School of Biomedical Engineering, Guangzhou Medical University, Guangzhou, 511436, China.
Tension-free repair operation in clinic needs an implantable mesh to repair the internal soft-tissue defect. However, the clinical patches fail to simultaneously achieve anti-adhesion, anti-deformation and tissue pro-healing. Herein, a high-performance anti-adhesion hydrogel patch is synthesized by one-step of directed freeze-casting technique via utilizing the FDA-approved poly (vinyl alcohol) (PVA) and carboxymethylcellulose nanofibril (CNF) as the network backbone without any chemical crosslinker.
View Article and Find Full Text PDFAdv Sci (Weinh)
July 2025
Guangdong Provincial Key Laboratory of Nanophotonic Manipulation, Institute of Nanophotonics, College of Physics & Optoelectronic Engineering, Jinan University, Guangzhou, 511443, China.
Miniaturized spectrometers utilizing a single reconfigurable photodetector (PD) are highly attractive in the infrared (IR) range due to their advantages in terms of cost, ease of integration, and reduced system complexity. However, such devices usually suffer from either limited wavelength tuning range or high spectral correlation in spectral sampling. Here, a new concept based on tunable guided mode resonances and surface plasmon resonances in a simple liquid crystal/Au stack is proposed to break the wavelength tuning range limit and simultaneously enable low spectral correlation.
View Article and Find Full Text PDFPolymers (Basel)
October 2024
National Metal and Materials Technology Center, National Science and Technology Development Agency (NSTDA), Ministry of Higher Education, Science, Research and Innovation, Khlong Luang 12120, Pathum Thani, Thailand.
This study investigates the crystallization, microstructure, and performance of poly(lactic acid)/poly(butylene succinate) (PLA/PBS) thin films processed through blown film extrusion and biaxial orientation (BO) at various blend ratios. Succinic anhydride (SA) was used to enhance interfacial adhesion in PLA-rich blends, while blends near 50/50 formed co-continuous phases without SA. Biaxial stretching and annealing, adjusted according to the crystallization behavior of PLA and PBS, significantly influenced crystallinity, crystallite size, and molecular orientation.
View Article and Find Full Text PDFInt J Biol Macromol
April 2024
CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China. Electronic address:
Fabrication of biodegradable shape memory polymer with remotely controllable shape actuation is of great significance in the biomedical field but remains challenging. Herein, we present a simple strategy to fabricate a monolayer-based stretchable and mechanically robust polycaprolactone/polydopamine elastomer via efficient thiol-ene click chemistry. The resultant elastomers exhibit desirable photothermal transfer efficiency and can enable rapid temperature increase over the melting temperature of polymeric matrix, and quantitative results demonstrate that the crosslinked film exhibited excellent shape memory properties with shape fixity (R) and shape recovery ratios (R) approaching 92.
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