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991.
Chiara Liliana Boldrini Andrea Francesca Quivelli Norberto Manfredi Vito Capriati Alessandro Abbotto 《Molecules (Basel, Switzerland)》2022,27(3)
Deep Eutectic Solvents (DESs) have been widely used in many fields to exploit their ecofriendly characteristics, from green synthetic procedures to environmentally benign industrial methods. In contrast, their application in emerging solar technologies, where the abundant and clean solar energy is used to properly respond to most important societal needs, is still relatively scarce. This represents a strong limitation since many solar devices make use of polluting or toxic components, thus seriously hampering their eco-friendly nature. Herein, we review the literature, mainly published in the last few years, on the use of DESs in representative solar technologies, from solar plants to last generation photovoltaics, featuring not only their passive role as green solvents, but also their active behavior arising from their peculiar chemical nature. This collection highlights the increasing and valuable role played by DESs in solar technologies, in the fulfillment of green chemistry requirements and for performance enhancement, in particular in terms of long-term temporal stability. 相似文献
992.
A green solvent-based DLLME/HPLC-MS method for the determination of 19 pesticides in wine samples has been developed. The extractant solvent is a hydrophobic eutectic mixture composed of L-menthol and butylated hydroxytoluene in a molar ratio of 3:1. The endogenous ethanol of wine has been used as dispersive solvent, in order to avoid the solidification of the extracts under 19 °C. The mobile phase composition, the elution gradient and the sample injection volume were optimized in order to make this hydrophobic mixture compatible with conventional reversed phase chromatography and electrospray ionization. The method was validated in matrix, using a wine free from the target compounds. Average recovery as high as 80%, precision between 3 and 14%, and limits of detection and quantification much lower than the maximum residue levels (MRLs) for grapes and wines fixed by the EU regulation, make this multiresidue method fitted for the purpose, with the further advantages of being quick, cheap and in compliance with the green analytical chemistry. From the analysis of 11 commercial wines it was found that just in a bio sample the target compounds were not detectable or lower than quantification limit; as for the other samples, the most widespread and abundant pesticides were methoxyfenozide and boscalid, but their levels were much lower than the relative MRLs. 相似文献
993.
Chiara Da Pieve Marta Costa Braga David R. Turton Frank A. Valla Pinar Cakmak Karl-Heinz Plate Gabriela Kramer-Marek 《Molecules (Basel, Switzerland)》2022,27(3)
A large number of applications for fibroblast activation protein inhibitors (FAPI)-based PET agents have been evaluated in conditions ranging from cancer to non-malignant diseases such as myocardial infarction. In particular, 68Ga-FAPI-46 was reported to have a high specificity and affinity for FAP-expressing cells, a fast and high accumulation in tumor lesions/injuries together with a fast body clearance when investigated in vivo. Due to the increasing interest in the use of the agent both preclinically and clinically, we developed an automated synthesis for the production of 68Ga-FAPI-46 on a Trasis AiO platform. The new synthetic procedure, which included the processing of the generator eluate using a strong cation exchange resin and a final purification step through an HLB followed by a QMA cartridge, yielded 68Ga-FAPI-46 with high radiochemical purity (>98%) and apparent molar activity (271.1 ± 105.6 MBq/nmol). Additionally, the in vitro and in vivo properties of the product were assessed on glioblastoma cells and mouse model. Although developed for the preparation of 68Ga-FAPI-46 for preclinical use, our method can be adapted for clinical production as a reliable alternative to the manual (i.e., cold kit) or modular systems preparations already described in the literature. 相似文献
994.
995.
We extend the result in [11] to the spaces of homogeneous type built in [2] starting from two sets of different dimensions with a unique point of contact. 相似文献
996.
Camila Boldrini Nascimento Silvano Leal dos Santos Everaldo Carlos Venancio Renato Altobelli Antunes 《Surface and interface analysis : SIA》2020,52(10):635-644
In the present work, electropolymerized polypyrrole (PPy) films were obtained on the surface of the surgical ISO 5832-1 stainless steel. The films were obtained from solutions containing 0.1M and 0.5M of the monomer by cyclic voltammetry deposition. The correlation between the surface chemistry of the as-deposited films and the corrosion behavior of the coated substrate is explored. X-ray photoelectron spectroscopy was used to study the chemical state of the main elements in the PPy films. Electrochemical impedance spectroscopy and potentiodynamic polarization tests were employed to evaluate the corrosion resistance of the PPy-coated samples. The tests were conducted in phosphate-buffered saline solution at 37°C. The measured corrosion current densities were dependent on the doping level of the PPy film and decreased with the reduction of the doping level of the PPy layer. 相似文献
997.
Andrew S. S. Wilson Chiara Dinoi Michael S. Hill Mary F. Mahon Laurent Maron Emma Richards 《Angewandte Chemie (International ed. in English)》2020,59(3):1232-1237
A molecular calcium hydride effects the two electron reduction of polyaromatic hydrocarbons, including naphthalene (E0=?3.1 V). 相似文献
998.
Duy‐Khiet Ho Xabier Murgia Chiara De Rossi Rebekka Christmann Antonio G. Hüfner de Mello Martins Marcus Koch Anastasia Andreas Jennifer Herrmann Rolf Müller Martin Empting Rolf W. Hartmann Didier Desmaele Brigitta Loretz Patrick Couvreur Claus‐Michael Lehr 《Angewandte Chemie (International ed. in English)》2020,59(26):10201-10201
999.
Dr. Elena Lucenti Dr. Alessandra Forni Dr. Chiara Botta Dr. Clelia Giannini Dr. Daniele Malpicci Dr. Daniele Marinotto Dr. Andrea Previtali Dr. Stefania Righetto Prof. Elena Cariati 《Chemistry (Weinheim an der Bergstrasse, Germany)》2019,25(10):2452-2456
Considering that heavy halogen atoms can be used to tune the emissive properties of organic luminogens, the understanding of their role in photophysics is fundamental for materials engineering. Here, the extrinsic and intrinsic heavy-atom effects on the photophysics of organic crystals were separately evaluated by comparing cyclic triimidazole ( TT ) with its monoiodo derivative ( TTI ) and its co-crystal with diiodotetrafluorobenzene ( TTCo ). Crystals of TT showed room-temperature ultralong phosphorescence (RTUP) originated from H-aggregation. TTI and TTCo displayed two additional long-lived components, the origin of which is elucidated through single-crystal X-ray and DFT/TDDFT studies. The results highlight the different effects of the I atom on the three phosphorescent emissions. Intrinsic heavy-atom effects play a major role on molecular phosphorescence, which is displayed at room temperature only for TTI . The H-aggregate RTUP and the I⋅⋅⋅N XB-induced (XB=halogen bond) phosphorescence on the other side depend only on packing features. 相似文献
1000.
Chiara Biagini Giorgio Capocasa Valerio Cataldi Daniele Del Giudice Prof. Luigi Mandolini Prof. Stefano Di Stefano 《Chemistry (Weinheim an der Bergstrasse, Germany)》2019,25(66):15205-15211
This work aimed to render phenomenologically autonomous the otherwise stepwise operation of a catenane-based molecular switch, which is chemically triggered by the decarboxylation of 2-cyano-2-phenylpropanoic acid ( 2 ). Given that any amount of 2 in stoichiometric excess with respect to the catenane is consumed in a side reaction, the authors resorted to the corresponding anhydride 5 , the slow hydrolysis of which, due to adventitious water in dichloromethane, continuously produces in situ the actual fuel 2 . As a consequence, the machine does not require a reloading after each cycle, but switches back and forth as long as fuel is present. 相似文献