A polymer filament, containing an O2-sensitive lumophore pigment, platinum(ii) (pentafluorophenyl) porphyrin coated onto nanoparticulate silica particles, i.e. PtTFPP/SiO2, is produced and used in a filament which is then 3D printed as O2-sensitive indicator dots (1 cm diameter, 30 μm thick) on a polyethylene terephthalate (PET) supporting film substrate. Two different filaments, prepared using the polymers, low density polyethylene (LDPE) and polylactic acid (PLA), respectively, are used to produce 3D printed PtTFPP/SiO2/LDPE and PtTFPP/SiO2/PLA O2-sensitive indicator dots, with dynamic ranges of 0-30% and 0-400% O2, respectively. The O2 response characteristics of these two, very different, indicator dots, such as sensitivity, response time and temperature sensitivity, are measured and compared with those of a commercial O2 indicator, FOSPOR (OceanInsight) and other commercial O2 indicators. The potential of this method for mass manufacture of O2 indicator dots and the likelihood that it can be extended to produce other optical indicators, such as those for ammonia or CO2, are discussed briefly.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d0an00809e | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Mung bean-derived carbon dots suppress ferroptosis of Schwann cells the Nrf2/HO-1/GPX4 pathway to promote peripheral nerve repair.
Biomater Sci
January 2025
Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou 450052, China.
Schwann cells (SCs) can potentially transform into the repair-related cell phenotype after injury, which can promote nerve repair. Ferroptosis occurs in the SCs of injured tissues, causing damage to the SCs and exacerbating nerve injury. Targeting ferroptosis in SCs is a promising therapeutic strategy for effective repair; however, research on ferroptosis in the peripheral nervous system remains limited.
View Article and Find Full Text PDFMicroneedle patch-involved local therapy synergized with immune checkpoint inhibitor for pre- and post-operative cancer treatment.
J Control Release
January 2025
State Key Laboratory of Natural Medicines, Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, PR China; NMPA Key Laboratory for Research and Evaluation of Cosmetics, China Pharmaceutical University, Nanjing 211198, PR China. Electronic address:
The metastasis and recurrence of cancer post-surgery remain the major reasons for treatment failures. Herein, a photo-immune nanoparticle decorating with M1 macrophage membrane (BD@LM) is designed based on the inflammatory environment after surgical resection. By loading photosensitizer black phosphorus quantum dots (BPQDs) and chemotherapeutics doxorubicin (DOX) in BD@LM nanoparticles, an effective chemophototherapy-mediated immunogenic cell death of tumor cells is triggered, subsequently leading to the maturation of dendritic cells for further immune cascade.
View Article and Find Full Text PDFQuantitative profiling and mapping of small molecules by laser desorption/ionization mass spectrometry: combinations of carbon-based nano-matrices and sample preparation protocols.
Analyst
January 2025
Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu Province 215123, China.
The choices of matrices and protocols for sample deposition are critical factors, which impact each other in the matrix-assisted laser desorption/ionization (MALDI) mass spectrometry imaging (MSI). Previous reports on MALDI MS matrices have only compared their performances in terms of their MS signal intensities and provided optical microphotos or MALDI MS images of sample spots but typically lacked quantitative evaluation. Therefore, there is an urgent need to develop a multivariate model to evaluate the performance of different combinations of matrices and sample protocols.
View Article and Find Full Text PDFIn vitro evaluation of anthelmintic activity of biocompatibile carbon quantum dot nanocomposite against egg and larval stages of equine strongyles.
BMC Vet Res
January 2025
Materials Synthesis Laboratory, Carbon Tech Industrial Group, Carbon Tech, Tehran, Iran.
Background: Strongyle nematodes pose a major challenge in veterinary parasitology, causing significant economic losses in livestock due to resistance to conventional treatments. Current anthelmintics, like Ivermectin, often encounter resistance issues. This study aims to address these gaps by synthesizing Carbon Quantum Dots (CQDs) and Copper-Doped CQDs (Cu@CQDs) using glucose extract, and evaluating their nematicidal properties against strongyles in vitro.
View Article and Find Full Text PDFProbing the interaction of mannose-binding lectin with healthy and sickle cell anemia red blood cells and its role in cellular biomechanics.
Int J Biol Macromol
January 2025
Departamento de Biofísica e Radiobiologia, Universidade Federal de Pernambuco, Recife, Pernambuco 50670-901, Brazil. Electronic address:
Mannose-binding lectin (MBL) is an important glycoprotein of the human innate immune system. Furthermore, individuals with sickle cell anemia (SCA) and MBL deficiency seem more susceptible to vaso-occlusive crises, suggesting an MBL role on HbSS red blood cells (RBCs). This study investigated the interaction of MBL with HbA (healthy) and HbSS RBCs using optical tweezers (OT) and atomic force microscopy (AFM).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!