Near-infrared deep brain stimulation via upconversion ...

9-2-2018· Noninvasive deep brain stimulation is an important goal in neuroscience and neuroengineering. Optogenetics normally requires the use of a blue laser inserted into the brain. Chen et al. used specialized nanoparticles that can upconvert near-infrared light from outside the brain into the local emission of blue light (see the Perspective by Feliu et al. ).

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Nanoparticles with Near-Infrared Emission Enhanced by ...

Here we report the unprecedented preparation of nanoparticles with near-infrared (NIR) emission enhanced by host–guest complexation between a water-soluble pillar[5]arene (WP5) and a cyanostilbene derivative (1) in water. Amphiphilic 1 self-assembles in water to form nanoribbons with relatively weak NIR emission at low concentrations. However, after addition of equimolar WP5, these ...

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Diketopyrrolopyrrole-based semiconducting polymer ...

A diketopyrrolopyrrole-based semiconducting polymer nanoparticle (PDFT1032) has been developed as a NIR-II (near infrared window II, 1000–1700 nm) fluorescent probe. It shows high photostability, a favorable absorption peak at 809 nm, a large Stokes shift of 223 nm, outstanding biocompatibility and minimal i Most popular 2018-2019 materials chemistry articles Most Impactful Nanoscience Articles

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In vivo molecular imaging for immunotherapy using ultra ...

30-9-2019· The near-infrared-IIb (NIR-IIb) (1,500–1,700 nm) window is ideal for deep-tissue optical imaging in mammals, but lacks bright and biocompatible probes. Here, we developed biocompatible cubic ...

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Gold nanoparticles doped metal-organic frameworks as …

20-2-2020· We report gold nanoparticles (AuNPs) doped iron-based metal-organic frameworks (GIM) which displays near-infrared light (NIR)-enhanced cascade nanozyme against hypoxic tumors. Due to the strong protein adsorption-induced surface passivation, AuNPs suffer from the loss of glucose oxidase (GOx) activity. However, GIM could protect the GOx-like activity of AuNPs with the satisfactory shield ...

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Near-Infrared Laser-Excited Nanoparticles To Eradicate ...

Near-Infrared Laser-Excited Nanoparticles To Eradicate Multidrug-Resistant Bacteria and Promote Wound Healing. Yue Qiao † ‡ Fei Ma ‡ Chao Liu ∥ Bo Zhou ‡ Qiaolin Wei ‡ Wanlin Li ‡ Danni Zhong ‡ Yangyang Li † ‡ Min Zhou * † ‡ § ⊥

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Responsive Assembly of Upconversion Nanoparticles for …

Responsive Assembly of Upconversion Nanoparticles for pH‐Activated and Near‐Infrared‐Triggered Photodynamic Therapy of Deep Tumors Fangyuan Li Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058 P. R. China

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Multi-photon near-infrared emission saturation nanoscopy ...

17-8-2018· Upconversion nanoparticles offer the potential for deep tissue biological imaging. Here, Chen et al. develop super resolution optical imaging in the near-infrared for imaging with sub-50 nm ...

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Near Infrared-Emitting Nanoparticles for Biomedical ...

This book analyzes and evaluates the growing field of light-emitting nanoprobes as contrast agents for in vivo imaging and sensing.It is a comprehensive resource that critically analyzes the state of the art in an interdisciplinary manner, with a special focus on the shift of emission wavelengths into the near-infrared (NIR) spectral region (ranging from 0.7 to 2 microns), which has greatly ...

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In Vitro and In Vivo Near‐Infrared Photothermal Therapy of ...

Poly(vinyl alcohol)‐coated polypyrole , a conductive polymer that forms nanoparticles in the aqueous phase, is used as a near‐infrared light‐absorbing agent for photothermal therapy of cancer, obtaining excellent cancer ablation therapeutic effects in both cellular and animal experiments.

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Near infrared imaging with nanoparticles.

Near infrared imaging has presented itself as a powerful diagnostic technique with potential to serve as a minimally invasive, nonionizing method for sensitive, deep tissue diagnostic imaging. This potential is further realized with the use of nanoparticle (NP)-based near infrared (NIR) contrast agents that are not prone to the rapid photobleaching and instability of their organic counterparts.

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Diketopyrrolopyrrole-based semiconducting polymer ...

A diketopyrrolopyrrole-based semiconducting polymer nanoparticle (PDFT1032) has been developed as a NIR-II (near infrared window II, 1000–1700 nm) fluorescent probe. It shows high photostability, a favorable absorption peak at 809 nm, a large Stokes shift of 223 nm, outstanding biocompatibility and minimal i Most popular 2018-2019 materials chemistry articles Most Impactful …

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Near-infrared spectroscopy - Wikipedia

Near-infrared spectroscopy (NIRS) is a spectroscopic method that uses the near-infrared region of the electromagnetic spectrum (from 780 nm to 2500 nm). Typical applications include medical and physiological diagnostics and research including blood sugar, pulse oximetry, functional neuroimaging, sports medicine, elite sports training, ergonomics, rehabilitation, neonatal research, brain ...

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Near infrared fluorescent peptide nanoparticles for ...

Biocompatible nanoparticles for ... the drug delivery to tumor sites and therapeutic responses could be monitored with near-infrared fluorescence ... Nature Communications. ISSN 2041-1723

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Synthesis and characterization of near-infrared ...

The nanoparticles were characterized and their magnetic properties studied. A photochemical study of the iron nanoparticles conjugated with a near-infrared fluorescent dye, Alexa Fluor 660, confirmed that the fluorescent dye is attached to the nanoparticles and retains its fluorescent properties.

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Near Infrared Boron Dipyrromethene Nanoparticles for ...

Near‐infrared boron dipyrromethene nanoparticles provide a versatile organic platform in optotheranostics. These biocompatible materials possess robust …

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Near infrared imaging with nanoparticles | Request PDF

Near infrared imaging with nanoparticles Article · Literature Review in Wiley Interdisciplinary Reviews Nanomedicine and Nanobiotechnology 2(5):461-77 · September 2010 with 887 Reads

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In Vitro and In Vivo Near‐Infrared Photothermal Therapy …

Poly(vinyl alcohol)‐coated polypyrole , a conductive polymer that forms nanoparticles in the aqueous phase, is used as a near‐infrared light‐absorbing agent for photothermal therapy of cancer, obtaining excellent cancer ablation therapeutic effects in both cellular and animal experiments.

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Near-Infrared Organic Fluorescent Nanoparticles for …

Near-Infrared Organic Fluorescent Nanoparticles for Long-term Monitoring and Photodynamic Therapy of Cancer . Qi Xia 1,2, Zikang Chen 1,2, Yuping Zhou 1,2, Ruiyuan Liu 1 . 1. Biomaterials Research Center, School of Biomedical Engineering, Southern …

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Mammalian Near-Infrared Image Vision through ... - Cell

Injectable photoreceptor-binding nanoparticles with the ability to convert photons from low-energy to high-energy forms allow mice to develop infrared vision without compromising their normal vision and associated behavioral responses.

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Near Infrared Absorption of Tungsten Oxide …

Furthermore, the film prepared from as-synthesized Cs0.32WO3 nanoparticles shows excellent NIR-shielding properties (approximately 99% of the near-infrared radiation is cut off over a wavelength ...

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A highly sensitive and selective nanosensor for near ...

17-4-2020· Here, we report a highly sensitive and selective nanosensor for near-infrared (NIR) K+ imaging in living cells and animals. The nanosensor is constructed by encapsulating upconversion nanoparticles (UCNPs) and a commercial K+ indicator in the hollow cavity of mesoporous silica nanoparticles, followed by coating a K+-selective filter membrane.

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Near Infrared Fluorescent Nanoparticles Derived from ...

Near Infrared Fluorescent Nanoparticles Derived from Hyaluronic Acid Improve Tumor Contrast for Image-Guided Surgery . Tanner K. Hill 1, Sneha S. Kelkar 2, Nicholas E. Wojtynek 3, Joshua J. Souchek 1, William M. Payne 1, Kristina Stumpf 4, Frank C. Marini 4,5, Aaron M. Mohs 1,3 . 1.

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Gold Nanoparticles and Near-infrared Light Kill Cancer ...

Following that tradition, researchers at ETH Zurich in Switzerland have demonstrated that gold nanoparticles, in combination with near-infrared light, can turn up the heat on cancer cells enough ...

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Molecular Engineering of Near-Infrared Light-Responsive ...

Ultrastable near-infrared conjugated-polymer nanoparticles for dually photoactive tumor inhibition. Adv Mater. 2017;29:1700487 65. Guangxue F, Yuan F, Jie L, Junlong G, Dan D, Bin L. Multifunctional conjugated polymer nanoparticles for image-guided photodynamic and photothermal therapy. Small. 2017;13:1602807 66.

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Upconverting Nanoparticles with a Mesoporous TiO2 Shell ...

Upconverting Nanoparticles with a Mesoporous TiO 2 Shell for Near‐Infrared‐Triggered Drug Delivery and Synergistic Targeted Cancer Therapy Meili Yin Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022 (P.R. China), Fax: (+86) 431‐85262625

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Hyperbolic Metamaterial Nanoparticles for Efficient ...

1 Hyperbolic Metamaterial Nanoparticles for Efficient Hyperthermia in the II and III Near-Infrared Windows Yingqi Zhao 1, Marzia Iarossi 1,2, Nicolò Maccaferri 1,3, Lieselot Deleye 1, Giovanni Melle 1,2, Jian-An Huang 1, Francesco Tantussi 1, Tommi Isoniemi 1 and Francesco De Angelis 1* 1 Istituto Italiano di Tecnologia, Via Morego 30, 16163, Genova, Italy 2 Department of Informatics ...

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Absorption and scattering of near-infrared light by ...

Absorption and scattering of near-infrared light by dispersed lanthanum hexaboride nanoparticles for solar control filters - Volume 25 Issue 3 - Kenji Adachi, Mitsunobu Miratsu, Tsuyoshi Asahi

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Nanoparticles Let Mice See Near Infrared Light | The ...

They found that when exposed to near-IR light of about 980 nanometers, the nanoparticles emitted light in the 550 nanometer range, which appears green in the visible spectrum. Then the authors did electrophysiological recordings of individual photoreceptors to show that the coated cells were activated by near-infrared light.

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Near-infrared upconversion–activated ... - Science …

Here, we designed a near-infrared (NIR) light–responsive nanocarrier of CRISPR-Cas9 for cancer therapeutics based on upconversion nanoparticles (UCNPs). The UCNPs served as “nanotransducers” that can convert NIR light (980 nm) into local ultraviolet light for the cleavage of photosensitive molecules, thereby resulting in on-demand release of CRISPR-Cas9.

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