Academic literature on the topic 'Polyaromatic molecules'

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Journal articles on the topic "Polyaromatic molecules"

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Yazaki, Kohei, Lorenzo Catti, and Michito Yoshizawa. "Polyaromatic molecular tubes: from strategic synthesis to host functions." Chemical Communications 54, no. 26 (2018): 3195–206. http://dx.doi.org/10.1039/c8cc00799c.

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This feature article describes the recent progress in the synthesis and application of short tubular molecules bearing multiple (≥3) polyaromatic rings (e.g., anthracene, pyrene, chrysene, anthanthrenylene, and HBC). These polyaromatic tubes display characteristic properties such as strong fluorescent emission, a selective molecular binding ability, efficient host–guest energy transfer and open–closed structural transformations.
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He, Lanyan, Pingmei Wang, Lipeng He, et al. "Molecular dynamics simulations of the self-organization of side-chain decorated polyaromatic conjugation molecules: phase separated lamellar and columnar structures and dispersion behaviors in toluene solvent." RSC Advances 8, no. 20 (2018): 11134–44. http://dx.doi.org/10.1039/c7ra13101a.

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Kartel, M. T., V. V. Lobanov, E. M. Demyanenko, Wang Bo, A. G. Grebenyuk, and O. S. Karpenko. "Sorption of molecular hydrogen on the graphene-like matrix doped by N- and B-atoms." Himia, Fizika ta Tehnologia Poverhni 12, no. 2 (2021): 112–23. http://dx.doi.org/10.15407/hftp12.02.112.

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The regularities of interaction of hydrogen molecules with graphene-like planes, where two carbon atoms are replaced by nitrogen or boron atoms, have been studied by the methods of quantum chemistry (DFT, B3LYP, 6-31G**). To take into account the dispersion contributions to the energy of formation of intermolecular complexes that occur during the formation of adsorption supramolecular structures, Grimme’ dispersion correction is used - D3. To study the effect of the size of a graphene-like cluster on the energy of molecular hydrogen chemisorption, polyaromatic molecules (PAM) are used of pyren
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Markevich, Alexander, Simon Kurasch, Ossi Lehtinen, et al. "Electron beam controlled covalent attachment of small organic molecules to graphene." Nanoscale 8, no. 5 (2016): 2711–19. http://dx.doi.org/10.1039/c5nr07539d.

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Hagiwara, Keita, Munetaka Akita, and Michito Yoshizawa. "An aqueous molecular tube with polyaromatic frameworks capable of binding fluorescent dyes." Chemical Science 6, no. 1 (2015): 259–63. http://dx.doi.org/10.1039/c4sc02377c.

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Biant, Lucas, Murielle Hayert, Hawraa Ayoub, Phuong-Mai Nguyen, and Olivier Vitrac. "Chemical imaging of contaminated recycled paper and board: Towards identification of the causality of food contamination." MATEC Web of Conferences 379 (2023): 01006. http://dx.doi.org/10.1051/matecconf/202337901006.

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Contamination of recycled paper and board food packaging by mineral oil hydrocarbons caused several crises in the past years. Although the migration from paper and board to foodstuffs has been proved many times, the contamination mechanisms and causalities remain undetermined and face unresolved issues. This study takes part in the collaborative project FoodSafeBioPack, which aims at evaluating the migration of potentially carcinogenic polyaromatic molecules from recycled paper and board packaging to food. New chemical imaging methods are used to follow this contamination at the microscopic sc
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Thomas, Michael, Irene Suarez-Martinez, Li-Juan Yu, et al. "Atomistic simulations of the aggregation of small aromatic molecules in homogenous and heterogenous mixtures." Physical Chemistry Chemical Physics 22, no. 37 (2020): 21005–14. http://dx.doi.org/10.1039/d0cp02622k.

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Lee, Hwankyu, and Yong-Kul Lee. "Effects of the asphaltene structure and the tetralin/heptane solvent ratio on the size and shape of asphaltene aggregates." Physical Chemistry Chemical Physics 19, no. 21 (2017): 13931–40. http://dx.doi.org/10.1039/c7cp01579h.

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Asphaltene molecules, which consist of differently hydrogenated polyaromatic cores grafted with side alkyl chains of different sizes and grafting densities, were simulated with a solvent mixture of heptane and tetralin using coarse-grained force fields.
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Tohnai, Norimitsu, Atsushi Yamamoto, Ichiro Hisaki, and Mikiji Miyata. "Hierarchical Construction of Versatile Diamondoid Porous Organic Salts (d-POS)." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C983. http://dx.doi.org/10.1107/s2053273314090160.

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Porous materials using organic molecules have attracted much attention due to their potential application such as gas absorption and so on. However, it is still difficult to construct porous structures from only simple organic molecules. Thus, we proposed a novel hierarchical method to construct porous structures. In this method, the first step is to build up molecular assemblies. These assemblies act to sustain porous structures with larger inclusion spaces. Then, the assemblies are accumulated by intermolecular interactions between assemblies to achieve both robustness and dynamics of the po
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Rumi, Mariacristina, Giuseppe Zerbi, Klaus Müllen, G. Müller, and Matthias Rehahn. "Nonlinear optical and vibrational properties of conjugated polyaromatic molecules." Journal of Chemical Physics 106, no. 1 (1997): 24–34. http://dx.doi.org/10.1063/1.473191.

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Dissertations / Theses on the topic "Polyaromatic molecules"

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Al-Muhammad, Ayham. "Synthesis of polyaromatic molecules for applications in organic electronics." Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/392946/.

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The synthesis of a number of novel polyaromatic compounds are reported, starting with novel polyheterocyclic systems containing sulphur and oxygen, otherwise known as thienoacenes and furanoacenes. These were generally produced via a four-step synthetic strategy utilising palladium-catalysed cross-coupling reactions such as Sonogashira and Suzuki cross-couplings to build the precursors, which were then subjected to a base-catalysed cycloisomerisation to give the final angular systems of several fused aromatic rings. Eight thienoacenes and seven furanoacenes, all consisting of between five and
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Kulisic, Niksa. "Heteroacenes as potential materials for molecular electronics." Doctoral thesis, Università degli studi di Trieste, 2010. http://hdl.handle.net/10077/3609.

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2008/2009<br>In this thesis, different strategies for obtaining azaacenes suitable for solution-based processing techniques have been investigated and developed. The first synthetic approach involved the condensation of commercially available compounds which include the diamines 2,3-diaminobenzene, 2,3-diaminonaphtalene and 2,3-diaminophenazine and the bromoanilic acid and embelin. This synthetic route yielded a series of dihydroazaacenes with 5 and 7 fused aromatic rings. The low overall solubility of this azaacenes did not permit an extensive characterization of the compounds.
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Rolland, de Denus Christine Marie. "Controlled molecular design and polymerization of polyaromatic ethers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq23656.pdf.

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de, Mendoza Bonmatí Paula. "Design and synthesis of new polyaromatic scaffolds for nano-scale applications." Doctoral thesis, Universitat Rovira i Virgili, 2010. http://hdl.handle.net/10803/9045.

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Design and Synthesis of New Polyaromatic Scaffolds for Nano-Scale Applications<br/><br/>Resumen: <br/><br/>En la última década, el diseño y la síntesis de nuevos sistemas poliaromáticos han resultado de gran interés gracias a sus propiedades únicas y sus aplicaciones potenciales para la obtención de dispositivos electrónicos, y como precursores de fullerenos. <br/>Hemos estudiado el mecanismo que procede a través de la activación del enlace C-H en la reacción intramolecular de arilación directa catalizada por paladio, para la formación de sistemas biarílicos, demostrando que la reacción proced
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Silva, Maria João Cerqueira da. "Polyaromatic hydrocarbons in hepatic tissues of Etmopterus pusillus and Galeus melastomus : multibiomarker analysis." Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/22689.

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Mestrado em Biologia Molecular e Celular<br>Um dos maiores ecossistemas do planeta, o marinho, apresenta uma biodiversidade enorme e é uma fonte de diversos recursos naturais. Hoje em dia, este ecossistema tornou-se relevante devido ao facto de ser alvo de inúmeras pressões antropológicas. Os tubarões são um dos predadores que estão no topo das cadeias alimentares marinhas, e estão constantemente a absorver contaminantes como consequência da bioacumulação nas redes tróficas. Etmopterus pusillus e Galeus melastomus no Oceano Atlântico estão a sofrer os efeitos da bioacumulação dos hidro
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Benigni, Paolo. "Trapped Ion Mobility Spectrometry coupled to Fourier Transform Ion Cyclotron Resonance Mass Spectrometry for the analysis of Complex Mixtures." FIU Digital Commons, 2017. https://digitalcommons.fiu.edu/etd/3547.

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Analytical Characterization of complex mixtures, such as crude oil, environmental samples, and biological mixtures, is challenging because of the large diversity of molecular components. Mass spectrometry based techniques are among the most powerful tools for the separation of molecules based on their molecular composition, and the coupling of ion mobility spectrometry has enabled the separation and structural elucidation using the tridimensional structure of the molecule. The present work expands the ability of analytical chemists by furthering the development of IMS-MS instrumentation by cou
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Le, Maître Johann. "Développement de la spectrométrie de masse à ultra- haute résolution associée à la spectrométrie de mobilité ionique pour la caractérisation de coupes pétrolières lourdes. structural analysis of heavy oil fractions afterr hydrodenitrogenation by high-resolution tandem mass spectrometry and ion mobility spectrometry Structural analysis of neutral nitrogen compounds refractory to the hydrodenitrogenation process of heavy oil fractions by high-resolution tandem mass spectrometry and ion mobility-mass spectrometry Chemical characterization of 15 biocrudes obtained from hydrothermal liquefaction of industrially cultivated wild micro algae Chemical characterization with different analytical techniques, a way to understand the process: Case of the paraffinic base oil production line Exploring complex mixtures by cyclic ion mobility high-resolution mass spectrometry – Application towards Petroleum. Simulation and modeling of Collision Cross Section for structural elucidation of heavy oil fraction by ion mobility-mass spectrometry: Using polyaromatic hydrocarbons compounds mixture as calibration standard Characterization of sulfoxides compounds in dimeric distribution of heavy oil fractions by positive-ion electrospray ionization FTICR mass spectrometry Structural analysis of Petroporphyrins from asphaltene by trapped ion mobility coupled with a Fourier transform ion cyclotron resonance mass spectrometer. Cyclic ion mobility spectrometry coupled to high-resolution time-of-flight mass spectrometry equipped with atmospheric solid analysis probe for the molecular characterization of combustion particulate matter. Structural study of analogues of Titan’s haze by trapped ion mobility coupled with a Fourier transform ion cyclotron mass spectrometer." Thesis, Normandie, 2020. http://www.theses.fr/2020NORMR051.

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L'évolution des réserves de pétrole implique l'utilisation en raffinerie de pétroles bruts non conventionnels, bien souvent plus lourds et donc difficiles à caractériser. Les produits pétroliers sont en effet des mélanges chimiques extrêmement complexes. La partie légère et volatile peut être analysée par chromatographie en phase gazeuse couplée à la spectrométrie de masse (GC/MS), permettant l'identification des composés par l'utilisation de mesures de masses précises et de modèles de fragmentation. Cependant ces techniques sont inadaptées à l'analyse des fractions lourdes. Dans la pratique,
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Book chapters on the topic "Polyaromatic molecules"

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Jacquot de Rouville, Henri-Pierre, Romain Garbage, Agnès M. Sirven, Claire Kammerer, and Gwénaël Rapenne. "Triptycene or Subphthalocyanine Wheels and Polyaromatic Hydrocarbon Nanovehicles." In Single Molecular Machines and Motors. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-13872-5_4.

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"Structure, texture, and thermal behaviour of polyaromatic solids Marc Monthioux." In Carbon Molecules and Materials. CRC Press, 2002. http://dx.doi.org/10.1201/b16832-7.

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Sawada, Tsuyoshi, Shingo Kubo, and Kazuaki Nanamura. "Chirality and Circular Polarized Properties of Photochromic Polyaromatic Molecules." In Chirality from Molecular Electronic States. IntechOpen, 2019. http://dx.doi.org/10.5772/intechopen.81880.

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Saraswat, Pooja, Kritika Yadav, Anamika Gupta, Mrinalini Prasad, and Rajiv Ranjan. "Physiological and molecular basis for remediation of polyaromatic hydrocarbons." In Handbook of Bioremediation. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-819382-2.00034-x.

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Conference papers on the topic "Polyaromatic molecules"

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Frenier, Wayne W. "Review of HSE Innovations in the Chemical Cleaning Industries." In CORROSION 2015. NACE International, 2015. https://doi.org/10.5006/c2015-05553.

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Abstract The use of large volumes of corrosive and possibly toxic chemicals to remove fouling deposits from industrial size equipment, as well as pipelines, is an inherently hazardous process. In addition to the chemicals themselves, the fluids must be pumped and circulated at high pressures and frequently high temperatures to achieve the cleaning goal. At the end of a job thousands (possibly hundreds of thousands) of gallons of toxic waste must be disposed of in some manner. Almost since its formation as an offshoot of the oilfield acidizing business, an emphasis on improving the triple goals
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Davari, N., P. O. Astrand, and M. Unge. "Field-dependent ionization potential for polyaromatic molecules from constrained density-functional theory." In 2014 IEEE 18th International Conference on Dielectric Liquids (ICDL). IEEE, 2014. http://dx.doi.org/10.1109/icdl.2014.6893142.

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Savchenkova, A. S., A. S. Semenikhin, I. V. Chechet, S. G. Matveev, M. Frenklach, and A. M. Mebel. "DIMERIZATION OF POLYAROMATIC HYDROCARBON MOLECULES WITH FORMATION OF E-BRIDGE BOND: A THEORETICAL STUDY." In 9TH INTERNATIONAL SYMPOSIUM ON NONEQUILIBRIUM PROCESSES, PLASMA, COMBUSTION, AND ATMOSPHERIC PHENOMENA. TORUS PRESS, 2020. http://dx.doi.org/10.30826/nepcap9a-13.

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In combustion engines and other fuel-burning devices, during the combustion of hydrocarbon fuels at a temperature of 1000-1400 K, soot is actively formed, deposited on the cold surfaces of the devices, which reduces their service life. At present, much attention is paid to the problems of controlling the amount and size of soot particles formed during combustion. However, the mechanism of soot formation has not yet been fully understood. It is assumed that under combustion conditions, young soot particles are formed by nucleation of aromatic and polyaromatic hydrocarbons (PAHs) with subsequent
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Wright, John C. "Applications of Linear and Nonlinear Site Selective Spectroscopy to Chemical Measurements." In Laser Applications to Chemical Analysis. Optica Publishing Group, 1987. http://dx.doi.org/10.1364/laca.1987.tha5.

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Selectivity is a factor that limits practical chemical measurements in many analytically important situations either because the large number of components causes overlapping of distinguishing features or the features of any one component are broadened because of inhomogeneties within the sample. Site selective spectroscopy has been developed as a method for improving selectivity by reducing both types of problems. Fluorescence line narrowing was first developed by Szabo for eliminating inhomogeneous broadening in ruby crystals [1], it was extended to the elimination of inhomogeneous broadenin
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Chen, Shaohua, Ming Han, Abdulkareem AlSofi, and Tianping Huang. "Development of a New Chemical Formulation for Heavy Oil Viscosity Reduction and Displacement." In SPE International Conference on Oilfield Chemistry. SPE, 2023. http://dx.doi.org/10.2118/213863-ms.

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Abstract A novel polycyclic aromatic hydrocarbon (PAH) based water-soluble viscosity reducer (VR) formulation was designed to reduce heavy oil viscosity for enhancing heavy oil production by chemical flooding. The polyaromatic structures such as benzene, naphthalene, and pyrene units in the VR formulation target asphaltene and resin components in heavy crude oil via π-π interaction to hinder formation and self-assembly of asphaltene aggregates and to reduce the viscosity of heavy oil accordingly. Two main chemical components in the VR package were synthesized from the reaction between poly(eth
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Jian, Cuiying, and Tian Tang. "Nanorods self-assembled from polyaromatic compounds: A molecular dynamics study [1]." In 2015 IEEE Nanotechnology Materials and Devices Conference (NMDC). IEEE, 2015. http://dx.doi.org/10.1109/nmdc.2015.7439271.

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"Effects caused by vacancies in carbon nanocluster C96 and polyaromatic molecule C96H24." In Chemical technology and engineering. Lviv Polytechnic National University, 2021. http://dx.doi.org/10.23939/cte2021.01.044.

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Collis, Gavin E. "Designing small molecule polyaromatic p- and n-type semiconductor materials for organic electronics." In SPIE Micro+Nano Materials, Devices, and Applications, edited by Benjamin J. Eggleton and Stefano Palomba. SPIE, 2015. http://dx.doi.org/10.1117/12.2202565.

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Sharma, Vaishali, Shweta D. Dabhi, Satyam Shinde, and Prafulla K. Jha. "Tuning electronic properties of graphene nanoflake polyaromatic hydrocarbon through molecular charge-transfer interactions." In INTERNATIONAL CONFERENCE ON NANOMATERIALS FOR ENERGY CONVERSION AND STORAGE APPLICATIONS: NECSA 2018. Author(s), 2018. http://dx.doi.org/10.1063/1.5035233.

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Misono, Masatoshi, Masaaki Baba, Shunji Kasahara, and Sho Yamasaki. "HIGH-RESOLUTION SPECTROSCOPY OF POLYAROMATIC HYDROCARBONS WITH A SINGLE MODE TI:SAPPHIRE LASER DISCIPLINED BY AN OPTICAL FREQUENCY COMB." In 74th International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2019. http://dx.doi.org/10.15278/isms.2019.mj04.

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