Academic literature on the topic 'Cbpqt4+'
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Journal articles on the topic "Cbpqt4+"
Yamamoto, Tohru, Hsian-Rong Tseng, J. Fraser Stoddart, Vincenzo Balzani, Alberto Credi, Filippo Marchioni, and Margherita Venturi. "Redox-Induced Ring Shuttling and Evidence for Folded Structures in Long and Flexible Two-Station Rotaxanes." Collection of Czechoslovak Chemical Communications 68, no. 8 (2003): 1488–514. http://dx.doi.org/10.1135/cccc20031488.
Full textLouisy, Jeremie, François Delattre, Joel Lyskawa, Aurélie Malfait, Catherine E. Maclean, Léna Sambe, Ning Zhu, Graeme Cooke, and Patrice Woisel. "Surfactant-mediated control of CBPQT4+–dialkoxynaphthalene complexation." Chemical Communications 47, no. 24 (2011): 6819. http://dx.doi.org/10.1039/c1cc10571j.
Full textCaldwell, Stuart T., Graeme Cooke, Alan Cooper, Margaret Nutley, Gouher Rabani, Vincent Rotello, Brian O. Smith, and Patrice Woisel. "Tuneable pseudorotaxane formation between a biotin–avidin bioconjugate and CBPQT4+." Chemical Communications, no. 23 (2008): 2650. http://dx.doi.org/10.1039/b803856b.
Full textZhang, Long, Yunyan Qiu, Wei-Guang Liu, Hongliang Chen, Dengke Shen, Bo Song, Kang Cai, et al. "An electric molecular motor." Nature 613, no. 7943 (January 11, 2023): 280–86. http://dx.doi.org/10.1038/s41586-022-05421-6.
Full textCao, Jing, Jia-Bin Guo, Peng-Fei Li, and Chuan-Feng Chen. "Complexation between Pentiptycene Derived Bis(crown ether)s and CBPQT4+Salt: Ion-Controlled Switchable Processes and Changeable Role of the CBPQT4+in Host−Guest Systems." Journal of Organic Chemistry 76, no. 6 (March 18, 2011): 1644–52. http://dx.doi.org/10.1021/jo102288r.
Full textNasretdinova, G. R., R. R. Fazleeva, A. V. Yanilkin, A. T. Gubaidullin, E. T. Siraeva, E. E. Mansurova, A. Yu Ziganshina, and V. V. Yanilkin. "CYCLOBIS(PARAQUAT-P-PHENYLENE) - MEDIATED ELECTROSYNTHESIS OF SILVER NANOPARTICLES." Электрохимия 59, no. 10 (October 1, 2023): 559–78. http://dx.doi.org/10.31857/s0424857023100134.
Full textWang, Wei, Wei Wu, and Peifeng Su. "Radical Pairing Interactions and Donor–Acceptor Interactions in Cyclobis(Paraquat-P-Phenylene) Inclusion Complexes." Molecules 28, no. 5 (February 22, 2023): 2057. http://dx.doi.org/10.3390/molecules28052057.
Full textYeniad, Bahar, Kanykei Ryskulova, David Fournier, Joël Lyskawa, Graeme Cooke, Patrice Woisel, and Richard Hoogenboom. "Complexation of thermoresponsive dialkoxynaphthalene end-functionalized poly(oligoethylene glycol acrylate)s with CBPQT4+in water." Polym. Chem. 7, no. 22 (2016): 3681–90. http://dx.doi.org/10.1039/c6py00303f.
Full textSambe, Léna, François Stoffelbach, Katarzyna Poltorak, Joël Lyskawa, Aurélie Malfait, Marc Bria, Graeme Cooke, and Patrice Woisel. "Elaboration of Thermoresponsive Supramolecular Diblock Copolymers in Water from Complementary CBPQT4+and TTF End-Functionalized Polymers." Macromolecular Rapid Communications 35, no. 4 (December 21, 2013): 498–504. http://dx.doi.org/10.1002/marc.201300729.
Full textBigot, Julien, Marc Bria, Stuart T. Caldwell, Frédéric Cazaux, Alan Cooper, Bernadette Charleux, Graeme Cooke, et al. "LCST: a powerful tool to control complexation between a dialkoxynaphthalene-functionalised poly(N-isopropylacrylamide) and CBPQT4+ in water." Chemical Communications, no. 35 (2009): 5266. http://dx.doi.org/10.1039/b910856d.
Full textDissertations / Theses on the topic "Cbpqt4+"
Ribeiro, Cédric. "Assemblages (macro) moléculaires à base de complexe intra et/ou intermoléculaire de CBPQT4+, X-." Electronic Thesis or Diss., Centrale Lille Institut, 2023. http://www.theses.fr/2023CLIL0018.
Full textThe combination of polymer science and supramolecular chemistry has led to thedevelopment of supramolecular polymer materials with unusual structural, mechanical,and functional properties. These materials have already been exploited in manyapplications, including self-repairing materials, tissue engineering, and the controlledrelease of active ingredients. Supramolecular chemistry has proved to be a powerful toolfor modulating the properties of materials by controlling the dynamic nature ofsupramolecular interactions using appropriate stimuli. The work carried out within theframework of this thesis falls within this context, and its main objective was to developnew (macro)molecular assemblies based on intra- and inter-molecular CBPQT4+complexes. To this end, a new CBPQT4+-Fu derivative was developed, integrating a furanunit covalently connected to the CBPQT4+ host moiety. This derivative presents itself inaqueous media a self-included conformation in which the furan unit within the cavityexhibits extremely low reactivity (Diels-Alder) towards dienophiles. However, this can bereleased by adding a guest molecule (naphthalene) with a strong affinity for themacrocycle. This synergy, demonstrated at the molecular scale, enabling the Diels-Alderreaction to be triggered by forming an intramolecular complex, was then exploited to design various physical and chemically cross-linked hydrogels
Belal, Khaled. "Hydrogels stimulables à base de complexes de cyclobis paraquat paraphénylène." Thesis, Lille 1, 2016. http://www.theses.fr/2016LIL10108/document.
Full textMultistimuli-responsive polymer materials play an important role in various fields of applications, (drug delivery system, tissue engineering, and self-healing materials. In the last past decades, supramolecular chemistry has emerged as a powerful tool to build such smart materials. Indeed, thanks to the inherent and/or induced dynamic behavior of supramolecular interactions, materials properties can be potentially tuned or even programmed. The main objective of this thesis, that have been carried out in the framework of the STRAPA ANR project, was to exploit host-guest interactions formed from the cyclobis paraquat paraphenylene (CBPQT4+) host molecule and electron-rich entities (tetrathiafulvalene, naphthalene) to conceive multi-stimuli responsive hydrogels. Two kind of smart hydrogels have been developed : physical hydrogels in which the sol-gel transition can be controlled upon heating or by adding competitive molecules, and chemical hydrogels with programmable swelling properties. In the last case, we have notably shown that the actuating behavior of hydrogels could be finely triggered by applying various environmental stimuli (T, red/ox, competitive macromolecules and surfactants)
Botton, Vanderleia. "Síntese de ésteres etílicos catalisada pela adição direta de sólido fermentado de Rhizopus microsporus CBPQA 312-07 DRM em sistema livre de solventes." reponame:Repositório Institucional da UFPR, 2015. http://hdl.handle.net/1884/40541.
Full textTese (doutorado) - Universidade Federal do Paraná, Setor de Ciências Exatas, Programa de Pós-Graduação em Química. Defesa: Curitiba, 31/10/2014
Inclui referências : f. 123-140
Resumo: A produção do biodiesel em escala industrial é realizada pela transesterificação alcalina em meio homogêneo utilizando alcóxidos metálicos como catalisadores e variando-se o tipo de óleo vegetal de acordo com a região. Neste processo é necessário utilizar óleo com baixo teor de ácidos graxos livres e baixo teor de umidade, o que limita o uso de matérias-primas de baixo custo. Por isto, novos processos têm sido estudados para possibilitar o uso de matérias-primas residuais, como a síntese enzimática de biodiesel tem sido exaustivamente investigada. No entanto, o desenvolvimento e a implantação do processo em escala industrial ainda são dificultados pelo elevado custo da enzima e baixa produtividade do processo enzimático. No presente trabalho, a fermentação em estado sólido (FES) foi utilizada para reduzir o custo das enzimas para a produção de biodiesel. Foram realizados cultivos de Rhizopus microsporus CBPQA 312-07 DRM usando bagaço de cana impregnado de solução nutriente enriquecida com ureia, oligoelementos e óleo de soja. Este sólido fermentado foi seco, caracterizado e utilizado diretamente para catalisar a síntese de biodiesel. Nos estudos de esterificação etílica em presença de n-heptano, conversões em éster de 98% foram obtidas em 4 h e a conversão se manteve após a reutilização do sólido por 23 vezes. Em sistema livre de solventes, o ácido oleico foi inicialmente utilizado como substrato para o estudo de esterificação etílica, onde foram obtidos 98% de conversão em 48 h, com adição de 20% (m/m) de peneira molecular ao meio de reação. Em seguida, foi realizado um delineamento fatorial 22 onde se investigou o efeito da temperatura e da razão molar dos substratos (ácido oleico e mistura de ácidos graxos da borra de soja - AGBS) na esterificação etílica. A reação otimizada, realizada nas condições de razão molar 10:1 (etanol: ácido graxo), a 40 ºC, atingiu conversões de 98% e de 86% em 48 h, para o ácido oleico e AGBS, respectivamente. Os resultados obtidos neste trabalho mostram que foi possível produzir ésteres do biodiesel por esterificação num sistema livre de solventes, utilizando um catalisador produzido por FES a partir de bagaço de cana impregnado com solução nutriente. Essa estratégia minimiza os custos de produção das lipases para aplicação na produção de biodiesel. Palavras-chave: lipases, biodiesel, Rhizopus microsporus, fermentação em estado sólido, esterificação, sistema livre de solventes, síntese enzimática.
Abstract: Industrially, biodiesel is produced by homogeneous alkaline transesterification of vegetable oils with methanol. An important disadvantage of the chemical route is the need to use refined feedstocks, which are costly. These disadvantages have prompted researchers to study the enzymatic route, which allows the use of less costly residual oils. However, the enzymatic route is currently not competitive, due to the high cost of the lipases. In the present work, solid-state fermentation was used to reduce the cost of the enzyme. Rhizopus microsporus CBPQA 312-07 DRM was cultivated on sugarcane bagasse that had been impregnated with a nutrient solution containing urea, mineral salts and soybean oil. The fermented solid produced in this process was dried, characterized and added directly to the reaction medium to catalyze the esterification of oleic acid with ethanol. In the presence of n-heptane, conversions of 98% were obtained at 4 h and the fermented solid maintained this conversion in 23 consecutive batches. In solvent-free system with the addition of 20% (w/w) of molecular sieve, a conversion of 98% was obtained in 48 h. Two 22 factorial experiments were then carried out in solvent-free medium, one using oleic and one using soybean soapstock fatty acids (SSFA) as the fatty acid source. The variables studied were the reaction temperature and the molar ratio of ethanol to fatty acid. The optimum conditions were 40 ºC and a molar ratio of ethanol to fatty acid of 10:1, giving conversions at 48 h of 98% with oleic acid and 86% with SSFA. This work has shown that it is possible to obtain high yields of ethyl esters in a solventfree medium, using a lower cost fatty acid feedstock and a biological catalyst produced by solid-state fermentation of a nutrient-impregnated sugarcane bagasse. This strategy has the potential to reduce the cost of the enzymatic route for biodiesel production. Keywords: lipases, biodiesel, Rhizopus microsporus, solid-state fermentation, esterification, solvent free system, enzymatic synthesis.
Book chapters on the topic "Cbpqt4+"
Braginsky, Anastasia, Nachshon Cohen, and Erez Petrank. "CBPQ: High Performance Lock-Free Priority Queue." In Euro-Par 2016: Parallel Processing, 460–74. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-43659-3_34.
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