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Dianwei Gao, Chunwei Zhang and Jianhua Zhang
The energy absorption capacity of materials with negative Poisson?s ratio (NPR) is attracting interest from both industry and academia due to the excellent impact resistance of the local shrinkage of materials. However, understanding the compressive beha...
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Hongsub Jee, Hyeong-Sub Oh and Jaehyeong Lee
Poly(fluorene-alt-benzothiadiazole) (PFBT) is a promising chiral polymer for use in metamaterials and other photonic applications, due to its large chiral optical activity at visible wavelengths. However, its usages are very limited, since it is not read...
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Muhammad Shajih Zafar and Andrea Ragusa
Chiral molecules, such as amino acids and carbohydrates, are the building blocks of nature. As a consequence, most natural supramolecular structures, such as enzymes and receptors, are able to distinguish among different orientations in space of function...
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Alessandro Airoldi, Paolo Bettini, Matteo Boiocchi, Giuseppe Sala
Pág. 13 - 15
The paper presents some engineering solutions for the development of innovative aerodynamic surfaces with the capability of progressive shape variation. A brief introduction of the most significant issues related to the design of such morphing structures...
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Dávid Pál, Martin Gede, Ildikó Móczár, Péter Baranyai, Péter Bagi, Péter Huszthy
Pág. 20 - 36
Novel enantiopure azacrown [(R,R)-1 and (S,S)-1] and diazacrown [(R,R)-2?(R,R)-4 and (S,S)-2?(S,S)-4] ethers containing a pyrene fluorophore unit and two phenyl groups at their chiral centers were obtained in multistep syntheses. The action of these chem...
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Márton Korösi, Attila Sedon, Kinga Komka, Tamás Sohajda, Edit Székely
Pág. 130 - 137
Micronization processes involving supercritical carbon dioxide are rapid methods to produce fine particles. They also might offer the possibility of using less organic solvent than conventional crystallization methods leading to an environmentally friend...
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Amit Zodge, Márton Korösi, János Madarász, Imre Miklós Szilágyi, Erzsébet Varga, Edit Székely
Pág. 303 - 311
A new, rapid optical resolution method of 4-chloromandelic acid is presented using (R)-1-phenylethanamine as the resolving agent. Gas antisolvent fractionation was investigated as the separation method, studying the effect of pressure, temperature and ca...
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László Lorincz, Zsolt Hovonyecz, János Madarász, Erzsébet Varga, Edit Székely
Pág. 312 - 317
Three new, successful resolving agents, namely (S)-2-phenylglycinol, (R)-1-phenylethanaminium (R)-(1-phenylethyl) carbamate and (S)-2-hydroxy-1-phenylethanaminium (S)-(2-hydroxy-1-phenylethyl) carbamate of ibuprofen are presented. The carbamate salts are...
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Injung Lee, Anantha-Iyengar Gopalan and Kwang-Pill Lee
The separation of chiral compounds is an interesting and challenging topic in analytical chemistry, especially in environmental fields. Enantioselective degradation or bioaccumulation has been observed for several chiral pollutants. Polycyclic musks are ...
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Béla Mátravölgyi, Ervin Kovács, László Hegedus, Zsuzsa Jászay, Angelika Thurner, Szilvia Deák, Zsuzsa Erdélyi, Truong Son Pham, Katalin Gönczi, Szabolcs Sólyom, László Toke, Ferenc Faigl
Pág. 38 - 50
New methods for efficient preparation of optically active compounds developed recently are reported. Combination of selective organometallic, organocatalytic, phase transfer catalytic and catalytic hydrogenation reactions provided numerousnew optically a...
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Péter Bakó, Zsolt Rapi, György Keglevich
Pág. 51 - 58
A number of chiral macrocyclic compounds have been prepared that contain a monosaccharide-derived sub-unit. These sugar-based crown ethers were used as chiral phase transfer catalysts in a few asymmetric reactions. A few of them proved to be effective ca...
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Balázs Komjáti, Bianka Szokol, Benjámin Kováts, Péter Kegye, József Nagy
Pág. 503?509
The formal [2+2] cycloaddition of ketenes and imines, also known as Staudinger synthesis, is a facile method for the synthesis of biologically important ß-lactam derivatives. In this paper two previously reported stereoselective reactions were investigat...
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Emese Pálovics, Zsolt Szeleczky, Péter Bagi, Ferenc Faigl, Elemér Fogassy
Pág. 26 - 37
The driving force of the formation of the homo- and heterochiral associates in the mixtures of chiral compounds is, probably, the effort of the system to separate the most symmetric associates from the less symmetric ones. A possible way to achieve separ...
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Zixuan Fang, Dingwei Zhang, Xiaokang Liu, Jingxuan Li, Lijun Yang and Qingfei Fu
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Jiajia Chen, Xieyu Chen and Zhen Tian
This work provides a new strategy for the development of tunable terahertz chiral devices and will find applications in polarization-dependent fields.
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Samuel Haeuser, Richard H. J. Kim, Joong-Mok Park, Randall K. Chan, Muhammad Imran, Thomas Koschny and Jigang Wang
One manifestation of light-Weyl fermion interaction is the emergence of chiral magnetic effects under magnetic fields. Probing real space magnetic responses at terahertz (THz) scales is challenging but highly desired, as the local responses are less affe...
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Olga Rubí Juárez-Rivera, Reina Araceli Mauricio-Sánchez, Kenneth Järrendahl, Hans Arwin and Arturo Mendoza-Galván
Chiral films are susceptible to changes in humidity enabling humidity detectors. They can also be used in optical devices due to their interesting polarization properties.
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Ghafour Hashemvand Shakarab, Reza Kheradmand, Mohammad Agha Bolorizadeh and Franco Prati
A semiconductor ring laser with a long cavity supports propagating localised structures with a chiral charge, named phase solitons. In this paper we study the dependence of the velocity and of the duration of the phase solitons on the characteristic time...
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Tamás Németh, Tünde Tóth, György Tibor Balogh, Péter Huszthy
Pág. 249 - 257
The synthesis of two new 9-phenylacridino-18-crown-6 ether type sensor molecules [1 and (R,R)-2] was accomplished. The cation recognition ability of the achiral sensor molecule 1 towards various ions was studied in acetonitrile by UV/Vis and fluorescence...
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Máté Mihalovits, Attila Horváth, László Lorincz, Edit Székely, Sándor Kemény
Pág. 294 - 302
Solubility parameters are widely used in the polymer industry and are often applied in the high pressure field as well as they give the possibility of combining the effects of all operational parameters on solubility in a single term. We demonstrate a st...
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