• CONTROLLING THE STEREOCHEMISTRY IN 2-OXO-ALDEHYDE-DERIVED UGI ADDUCTS THROUGH THE CINCHONA ALKALOID-PROMOTED ELECTROPHILIC FLUORINATION 

  Wang, Yuqing; Wang, Gaigai; Peshkov, Anatoly A.; Yao, Ruwei; Hasan, Muhammad; Zaman, Manzoor; Liu, Chao; Kashtanov, Stepan; Pereshivko, Olga P.; Peshkov, Vsevolod A. (Beilstein Journal of Organic Chemistry, 2020-08)

  In this report, we introduce a new strategy for controlling the stereochemistry in Ugi adducts. Instead of controlling stereochemistry directly during the Ugi reaction we have attempted to stereodefine the chiral center ...
• Nano-Mole Scale Side-Chain Signal Assignment by 1H-Detected Protein Solid-State NMR by Ultra-Fast Magic-Angle Spinning and Stereo-Array Isotope Labeling 

  Wang, Songlin; Parthasarathy, Sudhakar; Nishiyama, Yusuke; Endo, Yuki; Nemoto, Takahiro; Yamauchi, Kazuo; Asakura, Tetsuo; Takeda, Mitsuhiro; Terauchi, Tsutomu; Kainosho, Masatsune; Ishii, Yoshitaka (Public Library of Science, 2015-04)

  We present a general approach in 1H-detected 13C solid-state NMR (SSNMR) for side-chain signal assignments of 10-50 nmol quantities of proteins using a combination of a high magnetic field, ultra-fast magic-angle spinning ...
• Detection of Paracetamol in Water and Urea in Artificial Urine with Gold Nanoparticle@Al Foil Cost-efficient SERS Substrate 

  Mukanova, Zhansaya; Gudun, Kristina; Elemessova, Zarina; Khamkhash, Laura; Ralchenko, Ekaterina; Bukasov, Rostislav (Nihon Bunseki Kagakkai, 2018)

  We demonstrated that a cost-efficient, easy to prepare, hybrid SERS substrate-gold nanoparticles (AuNPs) on untreated Al foil (AlF) can effectively detect pharmaceuticals, such as paracetamol and clinical biomarkers, like ...
• Monitoring of vegetation drying by Brillouin and Raman spectroscopies 

  Rakymzhan, Adiya; Yakupov, Talgat A.; Yelemessova, Zarina; Bukasov, Rostislav; Yakovlev, Vladislav V.; Utegulov, Zhandos N. (Nazarbayev University School of Science and Technology, 2017-05-01)

  Raman and Brillouin spectroscopic provide with a powerful way to non-invasively assess both chemical and physical (viscoelastic) properties. In this report, Brillouin microspectroscopy was used for real time analysis of ...
• Turbulence Generation by Shock-Acoustic-Wave Interaction in Core-Collapse Supernovae 

  Abdikamalov, Ernazar; Huete, César; Nussupbekov, Ayan; Berdibek, Shapagat (MDPI, 2018-05-07)

  Convective instabilities in the advanced stages of nuclear shell burning can play an important role in neutrino-driven supernova explosions. In our previous work, we studied the interaction of vorticity and entropy waves ...
• Carbon Dots Doped with Dysprosium: A Bimodal Nanoprobe for MRI and Fluorescence Imaging 

  Atabaev, Timur; Piao, Zhonglie; Molkenova, Anara (MDPI, 2018-05-18)

  In recent years, functional nanoprobes with multiple imaging modalities have become an emerging field of biomedical research. In this preliminary study, we utilized a facile hydrothermal method for the preparation of ...
• Selective oxidation of styrene catalyzed by cerium-doped cobalt ferrite nanocrystals with greatly enhanced catalytic performance 

  Tong, Jinhui; Li, Wenyan; Bo, Lili; Wang, Huan; Hu, Yusen; Zhang, Zhixia; Mahboob, Abdulla (Journal of Catalysis, 2016-12-01)

  Abstract The rare earth metal Ce-doped cobalt ferrite samples CexCo1−xFe2O4 (x=0.1, 0.3, 0.5) were prepared by the sol–gel autocombustion route. The as-prepared samples were characterized by X-ray diffractometry, scanning ...
• The hows and whys of peculiar coordination of 4-amino-2,1,3-benzothiadiazole 

  Sukhikh, T.S.; Komarov, V.Yu.; Konchenko, S.N.; Benassi, E. (Polyhedron, 2018-01-08)

  Abstract 4-Amino-2,1,3-benzothiadiazole (L) and its model complexes with Cu+, Zn2+, Ag+ and Cd2+ have been computationally investigated in order to reveal the origins of coordination preferences of this multidentate ligand. ...
• Synthesis, crystal and electronic structure of the quaternary sulfides Ln2CuMS5 (Ln=La, Ce; M=Sb, Bi) 

  Kussainova, Ardak M.; Akselrud, Lev G.; Suen, Nian-Tzu; Voss, Leonard; Stoyko, Stanislav; Bobev, Svilen (Journal of Solid State Chemistry, 2016-01-01)

  Abstract The series of quaternary sulfides with general formula Ln2CuMS5 (Ln=La, Ce; M=Sb, Bi) have been synthesized by solid-state reactions. Three representative members have been structurally characterized by single-crystal ...
• Synthesis of Hierarchical Porous Sulfur/Polypyrrole/Multiwalled Carbon Nanotube Composite Cathode for Lithium Batteries 

  Zhang, Yongguang; Zhao, Yan; Bakenov, Zhumabay; Tuiyebayeva, Madina; Konarov, Aishuak; Chen, P. (Electrochimica Acta, 2014-10-10)

  Abstract A novel porous sulfur/polypyrrole/multiwalled carbon nanotube composite (S/PPy/MWNT) was synthesized via in situ polymerization of pyrrole monomer with nano-sulfur and MWNT aqueous suspension followed by a low ...
• Synthesis and Characterization of Silicon Based Anode Materials 

  Ould Ely, T.; Batyrbekuly, D.; Sugurbekov, Y.; Stambekova, D.; Doherty, M.F.; Bakenov, Z. (Materials Today: Proceedings, 2017-01-01)

  Abstract We have synthesized amorphous silicon-nanomaterials displaying high capacity and stable cyclability using an original organometallic approach. The method is based on the decomposition of silicon compounds 1Si-P1-U-2016 ...
• Synthesis and anodic electrochemistry of cymanquine and related complexes 

  Lam, Kevin; Geiger, William E. (Journal of Organometallic Chemistry, 2016-08-15)

  Abstract Three compounds have been prepared in which a 4-aminochloroquinoline moiety is covalently linked to a cyclopentadienyl manganese tricarbonyl moiety. One of these (“cymanquine”, 4) is the analogue of the potent ...
• One-electron oxidation of chloroquine, cymanquine, and related aminoquinolines in nonaqueous media 

  Lam, Kevin; Van Wyck, Stephen J.; Geiger, William E. (Journal of Electroanalytical Chemistry, 2017-08-15)

  Abstract The anodic oxidation of a series of secondary-amine-substituted chloroquinoline derivatives, 1–5, has been studied in dichloromethane/0.05M [NBu4][B(C6F5)4]. Compounds 4 and 5 contain organometallic moieties of ...
• Synthesis and antibacterial activity of silver@carbon nanocomposites 

  Wang, Kunjie; Ji, Qingjuan; Li, Hongxia; Guan, Feng; Zhang, Deyi; Feng, Huixia; Fan, Haiyan (Journal of Inorganic Biochemistry, 2017-01-01)

  Abstract In this work, hollow multiple-Ag-nanoclustes- C-shell nanocomposites (Ag@C) were synthesized by using silane coupling agent to graft carbon dots (CDs) with silver nanoparticles (AgNPs). CDs act as coating and ...
• Lipase-mediated regioselective modifications of macrolactonic sophorolipids 

  Sembayeva, Aliya; Berhane, Beniam; Carr, Jason A. (Tetrahedron, 2017-04-06)

  Abstract Chemoenzymatic synthesis and modification of well-defined macrolactonic sophorolipid (SLML) analogues via a series of successive regioselective de-esterification/transesterification reactions is investigated. Of ...
• Corrigendum to “Synthesis and anodic electrochemistry of cymanquine and related complexes” [J. Organomet. Chem. 817 (15 August 2016) 15–20] 

  Lam, Kevin; Geiger, William E. (Journal of Organometallic Chemistry, 2017-05-15)

  The authors regret that the oxidation potentials given for compound 5 in the paper are incorrect. The correct values, referenced to ferrocene, are 0.88 V for the first oxidation and 1.14 V for the second oxidation.
• Reaction barrier heights for cycloreversion of heterocyclic rings: An Achilles’ heel for DFT and standard ab initio procedures 

  Yu, Li-Juan; Sarrami, Farzaneh; O’Reilly, Robert J.; Karton, Amir (Chemical Physics, 2015-09-08)

  Abstract We introduce a database of 20 accurate cycloreversion barrier heights of 5-membered heterocyclic rings (to be known as the CRBH20 database). In these reactions, dioxazole and oxathiazole rings are fragmented to ...
• Theoretical design of triphenylamine-based derivatives with asymmetric D–D–π–A configuration for dye-sensitized solar cells 

  Balanay, Mannix P.; Enopia, Camille Marie G.; Lee, Sang Hee; Kim, Dong Hee (Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2015-04-05)

  Abstract The use of theoretical techniques in the structural development of dye-sensitized solar cells helps in the efficient screening of the dyes. To properly rationalize the dye’s design process, benchmark calculations ...
• Molecular engineering of donor–acceptor co-polymers for bulk heterojunction solar cells 

  Balanay, Mannix P.; Kim, Dong Hee (Computational and Theoretical Chemistry, 2015-03-01)

  Abstract We report a computational modeling, based on DFT and TD-DFT methodologies, on the structural, electronic, and optical properties of different donor–acceptor co-polymer system in bulk heterojunction solar cells. ...
• Homolytic C–Br bond dissociation energies obtained by means of the G4 thermochemical protocol 

  Kazakbayeva, Zhanna; Zhumagali, Shingis; Mahboob, Abdulla; O'Reilly, Robert J. (Chemical Data Collections, 2016-05-01)

  Abstract Knowledge of the energies required to induce homolytic cleavage of the C–Br bonds of brominated organic molecules, a process that affords carbon-centered radicals and Br•, is of fundamental importance. Although ...

View more