The second near-infrared window (NIR-II) in the range of 1000-1400 nm is ideal for imaging and sensing through reduced scattering, absorption, and autofluorescence. However, there are only a few nanophosphor systems with emission in the NIR-II region. Here, we report on Mn-doped Ba(PO)Cl nanoparticles (BPCl:Mn NPs, < 50 nm) toward NIR-II temperature sensing. BPCl:Mn NPs are made by a two-step (hydrothermal and anion exchange) method. XRD, SEM, and TEM results showed that the as-prepared BPCl:Mn NPs show high crystallinity, uniform size, and sphere-like morphology. The nanoparticles exhibit a broad excitation band of 500-850 nm and a temperature-sensitive peak emission at 1175 nm in the NIR-II range. NIR-II temperature sensing by E emission intensity is demonstrated with good linear fitting ( = 0.9895), high sensitivity (2.30% at 373 K), and good repeatability (99.0%). Thus, our study provides a path to develop a new NIR-II thermometer based on tetrahedral Mn(V) coordination.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d4dt01440e | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The Role of Open-Shell Organic Radical in Enhancing Anti-Tumor Photocatalysis Reaction of NIR Light-Activated Photosensitizer.
Angew Chem Int Ed Engl
January 2025
Southern University of Science and Technology, Materials Science and Engineering, 1088 Xueyuan Blvd., Nanshan District, 518055, Shenzhen, CHINA.
Open-shell radical materials, which are characterized by unpaired electrons, have led to revolutionary breakthroughs in material science due to their unique optoelectronic properties. However, the involvement of organic radicals in photodynamic therapy (PDT) has rarely been reported or discussed. This work studies two photosensitizer analogs.
View Article and Find Full Text PDFA Rapidly Synthesized, Ultrasmall Silver Nanocluster for Near-Infrared-II Imaging and Metabolic Studies.
Nano Lett
January 2025
State Key Laboratory for Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
Article Synopsis
- Near-infrared-II (NIR-II) imaging is an advanced technique that enhances deep anatomical visualization by reducing issues like autofluorescence and tissue absorption.
- Current methods for creating NIR-II nanoprobes are inefficient, requiring significant time and effort, which calls for a quicker synthesis method.
- The study introduces DNA-templated silver nanoclusters (Ag NCs) that can be produced in just 2 minutes and are small enough to penetrate muscle tissue, making them effective for studying metabolic pathways through NIR-II imaging after intramuscular injection.
Constructing a Self-Referenced NIR-II Thermometer with Energy Tuning of Coordinating Water Molecules by a Minimalist Method.
ACS Appl Mater Interfaces
January 2025
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.
Fluorescence thermometry based on metal halide perovskites is increasingly becoming a hotspot due to its advantages of high detection sensitivity, noninvasiveness, and fast response time. However, it still presents certain technical challenges in practical applications, such as complex synthesis methods, the use of toxic solvents, and being currently mainly based on the visible/first near-infrared light with poor penetration and severe autofluorescence. In this study, we synthesize the second near-infrared (NIR-II) luminescent crystals based on Yb/Nd-doped zero-dimensional CsScCl·HO by a simple "dissolve-dry" method.
View Article and Find Full Text PDFBio-Inspired Multiple Responsive NIR II Nanophosphors for Reversible and Environment-Interactive Information Encryption.
Adv Mater
December 2024
College of Chemistry and Molecular Sciences, Renmin Hospital of Wuhan University, Institute of Molecular Medicine, School of Microelectronics, Wuhan University, Wuhan, 430072, P. R. China.
Inspired by the natural responsive phenomena, herein the multiple responsive persistent luminescent ZnGaGeO:Ni (ZGGO:Ni) nanoparticles with near-infrared (NIR) II emission peak ≈1330 nm derived from the Ni doping through controlled synthesis based on hydrothermal method are obtained. The obtained NIR II persistent luminescent ZGGO:Ni can not only respond to temperature but also the specific solvent stimulus. The results demonstrate that the NIR II persistent luminescence intensity decreases in hydroxyl containing solvent such as water (HO) and ethyl alcohol (CHO), while the PL intensity remains in solvent without hydroxyl groups such as n-hexane (CH) and deuterated water (DO).
View Article and Find Full Text PDFThermo-responsive gold nanorod vesicles for combined NIR-II photothermal therapy and chemotherapy of solid tumors.
Acta Biomater
January 2025
State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China; Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China. Electronic address:
Photothermal therapy (PTT) is a promising treatment strategy for malignant tumors. Photothermal agents which can achieve efficient photothermal conversion in the NIR-II region plays crucial roles in this remedy. Here, we report one type of thermo-responsive gold nanorod vesicles USGRV-17-AAG for combined NIR-II photothermal therapy and chemotherapy of solid tumors.
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!