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901.
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
902.
Dr. Shashank Mishra Prof. Stéphane Daniele 《Chemistry (Weinheim an der Bergstrasse, Germany)》2020,26(42):9292-9303
The ‘bottom-up’ synthesis of inorganic nanomaterials with precision at the atomic/molecular level offers many opportunities for the design and improvement of the nanomaterials for various applications. Molecular engineering during soft chemical processing for the synthesis of functional nanomaterials enables the desired chemical and physical properties of the precursors, such as solubility or volatility, clean decomposition, control of stoichiometry for multimetallic species to name a few, and leads to easy control of uniform particle size distribution, stoichiometry…. This Minireview illustrates some important aspects of the molecular engineering in light of some recent developments from the molecular synthesis of nanomaterials involving non-silicon metal alkoxide systems for high-tech applications. 相似文献
903.
Daniele Del Giudice Matteo Valentini Gabriele Melchiorre Emanuele Spatola Prof. Stefano Di Stefano 《Chemistry (Weinheim an der Bergstrasse, Germany)》2022,28(26):e202200685
This work reports that the composition of a dynamic library (DL) of interconverting imines can be controlled over time in a dissipative fashion by the addition of an activated carboxylic acid used as a chemical fuel. When the fuel is added to the DL, which is initially under thermodynamic equilibrium, the composition of the mixture dramatically changes and a new, dissipative (out of equilibrium) state is reached that persists until fuel exhaustion. Thus, a transient dissipative dynamic library (DDL) is generated that, eventually, reverts back to the initial DL when the fuel is consumed, closing a DL→DDL→DL cycle. The larger the amount of added fuel, the longer the time spent by the system in the DDL state. The transimination reaction is shown to be an optimal candidate for the realization of a dissipative dynamic covalent chemistry (DDCvC). 相似文献
904.
We investigate the kaon production at finite temperature and baryon density by means of an effective relativistic mean-field model with the inclusion of the full octet of baryons. Kaons are considered taking into account of an effective chemical potential depending on the self-consistent interaction between baryons. The obtained results are compared with a minimal coupling scheme, calculated for different values of the anti-kaon optical potential. 相似文献
905.
906.
Sergio Scognamillo Valeria Alzari Daniele Nuvoli Javier Illescas Salvatore Marceddu Alberto Mariani 《Journal of polymer science. Part A, Polymer chemistry》2011,49(5):1228-1234
Super water absorbent polymer hydrogels were synthesized by frontal polymerization. These materials were obtained by copolymerizing N‐isopropyl acrylamide (NIPAAm) and 3‐sulfopropyl acrylate potassium salt (SPAK) in the presence of N,N′‐methylene‐bis‐acrylamide as a crosslinker. It was found that their swelling behavior in water can be easily tuned by using either the appropriate monomer ratio or the amount of the crosslinker used. Namely, the swelling ratio was found to range from about 1000% for the NIPAAm homopolymer in the presence of 5.0 mol % of crosslinker, up to 35,000% for the sample containing 87.5 mol % of SPAK and 1.0 mol % of crosslinker. The affinity toward water was also confirmed by contact angle analysis. Moreover, the obtained hydrogels exhibit a thermoresponsive behavior, with a lower critical solution temperature of about 28–30 °C. This value is close to that of poly(NIPAAm) but with a swelling capability that dramatically increases as the amount of SPAK increases. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011 相似文献
907.
908.
Peng Yulan Zhou Liang Wang Lingzhi Lei Juying Liu Yongdi Daniele Stéphane Zhang Jinlong 《Research on Chemical Intermediates》2019,45(12):5907-5917
Research on Chemical Intermediates - The development of high-efficiency economic photocatalyst for H2O2 production is of great significance for renewable energy technologies. Here, we use a... 相似文献
909.
Dr. Daniele Del Giudice Dr. Francesco Tavani Dr. Marika Di Berto Mancini Dr. Federico Frateloreto Dr. Matteo Busato Dr. Danilo Oliveira De Souza Dr. Flavia Cenesi Prof. Osvaldo Lanzalunga Prof. Stefano Di Stefano Prof. Paola D'Angelo 《Chemistry (Weinheim an der Bergstrasse, Germany)》2022,28(4):e202103825
The satisfactory rationalization of complex reactive pathways in solution chemistry may greatly benefit from the combined use of advanced experimental and theoretical complementary methods of analysis. In this work, we combine X-Ray Absorption and 1H NMR spectroscopies with state-of-the-art Multivariate Curve Resolution and theoretical analyses to gain a comprehensive view on a prototypical reaction involving the variation of the oxidation state and local structure environment of a selected metal ion coordinated by organic ligands. Specifically, we investigate the 2-cyano-2-phenylpropanoic acid reduction of the octahedral complex established by the Cu2+ ion with terpyridine to the tetrahedral complex formed by Cu+ and neocuproine. Through our interdisciplinary approach we gain insights into the nature, concentration time evolution and structures of the key metal (XAS measurements) and organic (1H NMR measurements) species under reaction. We believe our method may prove to be useful in the toolbox necessary to understand the mechanisms of reactive processes of interest in solution. 相似文献