Study on electrochromic-fluorescence switching performance of film based on silicomolybdotungstate and silica nanoparticles doped with negative charged dye

Publication date: Available online 9 November 2019Source: Journal of Electroanalytical ChemistryAuthor(s): Zhijing Fu, Zhengyi Qu, Tian Yu, Lihua BiAbstractWe developed a novel way to construct the multifunctional composite films with luminescence and redox properties in this study. Firstly, the luminescent molecule HOPTS (8-hydroxypyene-1,3,6-trisulfonic acid trisodium salt) was incorporated into the silica spheres to form the green emission silica materials, HOPTS@SiO2, that were characterized by SEM (scanning electron microscope), FTIR (fourier transform infrared spectroscopy) and luminescence spectroscopy to verify their structure, morphology and property. And then the luminescent silica materials were functionalized by APTES (3-aminopropyltriethoxysilane) to form the positively charged surface, HOPTS@SiO2-APTES+. Afterwards, the composite luminescent films containing HOPTS@SiO2-APTES+ and SiMoW (SiMoW10O398−) were constructed by the layer-by-layer (LBL) assembly method immediately. The films were characterized by fluorescence spectroscopy, UV-vis spectroscopy, CV (cyclic voltammetry), XPS (X-ray photoelectron spectroscopy) and AFM (atomic force microscopy) to confirm their composition, morphology and property. Finaly, the reversible electrochemical photoluminescent switch performance of the composite luminescent films was investigated by in situ spectroelectrochemical system. The results indicated that thus-prepared composite films, [(PEI/SiMoW)5/(HOPTS@SiO2-APTES+...
Source: Journal of Electroanalytical Chemistry - Category: Chemistry Source Type: research

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ConclusionCommon Iliac Artery Aneurysms should be considered a differential diagnosis of lower abdominal mass. If presenting in this manner the aneurysm can be of significant size and at high risk of rupture, requiring urgent surgical intervention.
Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
Abstract The main constituents of the Euterpe oleracea Mart., Arecaceae, fruits (a çaí) are anthocyanins. This paper aimed to standardize the extraction process and characterize an anthocyanin-rich dry extract obtained from this fruit. A 23 full factorial design was used. The volumes of ethanol 92% and acetic acid and the extraction time were used as factors. Total solids and an thocyanins content were used as feedback. The dry extract was obtained by freeze-drying. The content of anthocyanins was determined spectrophotometrically. Fourier Transform Infrared Spectroscopy, Differential Scanning Calorimeter, Th...
Source: Revista Brasileira de Farmacognosia - Category: Drugs & Pharmacology Source Type: research
ConclusionsAlthough the clinicians'ability to predict the final dental arch form after orthodontic treatment and the agreement between clinicians increased by the use of digital equipment, orthodontists can predict the final arch form in about 60% of patients.
Source: Dental Technology Blog - Category: Dentistry Source Type: news
Primary leiomyosarcoma of the bronchus is an extremely rare malignant neoplasm. A 29-year-old man presented with persisting cough and sputum over 1 month. Unenhanced and contrast-enhanced chest CT showed a nodular lesion in the main bronchus of the left lower lobe and multiple enlarged lymph nodes in the mediastinum. Preoperative staging 18F-FDG PET/CT scan displayed a hypermetabolic lesion of the known nodule and mild FDG uptake of mediastinal lymph nodes. The histological examination confirmed bronchial leiomyosarcoma and reactive hyperplasia in lymph nodes.
Source: Clinical Nuclear Medicine - Category: Nuclear Medicine Tags: Interesting Images Source Type: research
Publication date: Available online 9 December 2019Source: Journal of Materials Research and TechnologyAuthor(s): Yan Zhang, YanKun Chen, JianPing Zhou, DaQian Sun, XiaoYan GuAbstractIn this work, Cu was used as an interlayer to prevent the formation of these brittle Ti-Fe intermetallics when joining Ti alloy to stainless steel (SS). Microstructures of the joint were analyzed by optical microscopy, scanning electron microscopy, transmission electron microscope and X-ray diffraction. The tensile strengths of the joint were also measured. The laser was focused on the SS side of the joint, which joined the SS and Cu by fusion ...
Source: Journal of Materials Research and Technology - Category: Materials Science Source Type: research
EXCLUSIVE: Heather Clatworthy, 37, from Warwickshire, fractured her back when in labour with her first child, Lilly, but didn't find out until she had an MRI scan six months later.
Source: the Mail online | Health - Category: Consumer Health News Source Type: news
Authors: Ahuja K, Sotoudeh H, Galgano SJ, Singh R, Gupta N, Gaddamanugu S, Choudhary G Abstract The skeleton is overall the third most common metastatic site after the lungs and liver. Accurate diagnosis of osseous metastasis is critical for initial staging, treatment planning, restaging, treatment monitoring and survival prediction. Currently, 99mTc-methylene diphosphonate (99mTc-MDP) whole-body scan is the cornerstone of imaging to detect osseous metastasis. Though 18F-sodium fluoride (18F-NaF) was one of the oldest medical tracers but was replaced by other tracers until recently, owing to its physical properties...
Source: Journal of Nuclear Medicine Technology - Category: Nuclear Medicine Tags: J Nucl Med Technol Source Type: research
Authors: Brindhaban A Abstract Rationale: Radiation dose to patients from imaging modalities are measured or calculated to assess the risk of the procedure and compared it to the benefits. Periodic review of image acquisition methods and radiation dose used are essential part of procedure optimization in medical imaging. The aim of this study was to estimate patient radiation dose from single photon emission computed tomography (SPECT) myocardial perfusion imaging (MPI) using computed tomography (CT) images for attenuation correction. Methods: SPECT and CT image acquisition parameters such as, administered activity...
Source: Journal of Nuclear Medicine Technology - Category: Nuclear Medicine Tags: J Nucl Med Technol Source Type: research
Authors: Sarikaya I, Sarikaya A Abstract Positron emission tomography (PET) imaging, particularly oncologic applications of fluorine-18 fluorodeoxyglucose (18F-FDG), has become a routine diagnostic study. To better describe the malignancies, various PET parameters are used. In 18F-FDG PET studies, maximum standardized uptake value (SUVmax) is the most commonly used parameter to provide a measurement of the metabolic activity of the tumor. In obese patients, SUV corrected by lean body mass (LBM) (SUL or SUVSUL) and in pediatric cases, SUV corrected by body surface area are recommended. Metabolically active tumor vol...
Source: Journal of Nuclear Medicine Technology - Category: Nuclear Medicine Tags: J Nucl Med Technol Source Type: research
MONDAY, Dec. 9, 2019 -- Positron emission tomography (PET)-directed therapy results in excellent outcomes for patients with stage I/II diffuse large B-cell lymphoma (DLBCL), according to a study presented at the annual meeting of the American...
Source: - Pharma News - Category: Pharmaceuticals Source Type: news
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