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Enhanced Spontaneous Emission Rate and Luminescence Intensity of CsPbBr Quantum Dots Using a High- Microdisk Cavity.
J Phys Chem Lett
January 2025
State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China.
Perovskite quantum dots (QDs) are high-efficiency optoelectronic materials attracting great interest, but further improvement in the luminescence efficiency is crucial for their application. In this work, we enhance both the spontaneous emission rate and the photoluminescence (PL) intensity of CsPbBr QDs by coupling them to a high quality () factor SiO microdisk cavity. Compared to conventional metal plasmonic cavities, the dielectric cavity structure suppresses the effects of quenching and energy transfer, which could introduce complex fluctuations and nonradiative decays.
View Article and Find Full Text PDFPLGA confers upon conventional nonfluorescent molecules luminescent properties to trigger O-induced pyroptosis and immune response in tumors.
J Nanobiotechnology
January 2025
State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
Pyroptosis, a recently identified cellular demise regulated by gasdermin family proteins, is emerging as a promising avenue in cancer immunotherapy. However, the realm of light-controlled pyroptosis in cancer cells remains largely unexplored. In this study, we took a deliberate approach devoid of any chemical alterations to develop a novel photosensitizer called "pharmaceutical-dots (pharm-dots)" by combining nonemissive polymers (Poly (lactic-co-glycolic acid), PLGA) with nonfluorescent invisible molecules like curcumin, berberine, oridonin into PLGA nanoparticles (PLGA-NPs).
View Article and Find Full Text PDFA Study of Structural, Optical and Photoluminescence Properties of Pr Ions Doped Sodium Bismuth Borosilicate Glasses.
J Fluoresc
January 2025
Department of Physics, Acharya Nagarjuna University, Nagarjuna Nagar, Andhra Pradesh, 522510, India.
In this work, the conventional melt quenching approach is used to synthesize the Pr doped NaF-BiO-BO-SiO (NBBS) glasses. The influence of Pr ions on their spectroscopic and structural characteristics in glass network is investigated. The amorphous nature of the samples has been amply verified by X-ray diffraction patterns.
View Article and Find Full Text PDFAcidity Reversal Enables Site-Specific Ring-Opening Polymerization of Epoxides from Biprotonic Compounds.
J Am Chem Soc
January 2025
Department of Polymer Chemistry and Technology, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia.
Polyethers are versatile materials extensively used in advanced as well as everyday applications. The incorporation of primary amine functionality into polyethers is particularly attractive due to its well-established coupling chemistries. However, the inherent nucleophilicity of amine group poses a challenge in the anionic ring-opening polymerization (ROP) of epoxides and requires the use of robust protecting groups that can withstand the harsh conditions of ROP without triggering undesirable side reactions.
View Article and Find Full Text PDFA bioluminescent reporter bioassay for in-process assessment of chimeric antigen receptor lentiviral vector potency.
Antib Ther
January 2025
Research and Development, Promega Corp., Madison, WI 53711, United States.
Background: Chimeric antigen receptor (CAR)-T-cell therapy is a breakthrough in the field of cancer immunotherapy, wherein T cells are genetically modified to recognize and attack cancer cells. Delivery of the CAR gene is a critical step in this therapy and is usually achieved by transducing patient T cells with a lentiviral vector (LV). Because the LV is an essential component of CAR-T manufacturing, there is a need for simple bioassays that reflect the mechanism of action (MOA) of the LV and can measure LV potency with accuracy and specificity.
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