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Binder-Free Monoliths of Graphene Dried Foam Films Covering Polyaniline for Supercapacitors Electrode
Wufeng Chen, Junhao Chen, and Lifeng Yan
doi: 10.21127/yaoyigc20200014
Abstract   PDF (920KB)
SnSe Solar Cells: Current Results and Perspectives
Paul Beltrán-Bobadilla, A. Carrillo-Osuna, J. A. Rodriguez-Valverde, B. Acevedo-Juárez, I. Montoya De Los Santos, F. J. Sánchez-Rodriguez, and Maykel Courel
doi: 10.21127/yaoyigc20200012
Abstract   PDF (475KB)
C—H Activation, a New Strategy for Synthesis of 3-Substituted Phthalides
Qianqian Sun, Runqing Zhu, Shuyu Hu, and Lizhen Fang
doi: 10.21127/yaoyigc20200010
Abstract   PDF (1912KB)
Hollow Polymer Capsules for Drug Delivery
Yuancheng Ji and Junqiu Liu
doi: 10.21127/yaoyigc20200009
Abstract   PDF (490KB)
Optical and Magnetic Properties of Superparamagnetic Fe3O4 Colloidal Nanoparticles
B. K. Pandey, A. K. Shukla, R. K. Kotanala, J. Shah, and R. Gopala
doi: 10.21127/yaoyigc20200006
Abstract   PDF (1241KB)
The Central Role of Chemistry in the Transition to Solar Economy: Outcomes of Two Lectures at the Russian Academy of Sciences
Mario Pagliaro
doi: 10.21127/yaoyigc20200007
Abstract   PDF (930KB)
PVP-Protected Pt-Ru Nanoparticles as Highly Efficient Catalysts for Hydrogen Generation from Hydrolysis of Sodium Borohydride
Murat Rakap
doi: 10.21127/yaoyigc20200003
Abstract   PDF (829KB)
Luminescence of Europium Complexes with Triazole-Containing Ligands
Jae Hoon Kim, A. I. Dalinger, A. V. Medvedko, E. V. Latipov, S. Z. Vatsadze, and V. V. Utochnikova
doi: 10.21127/yaoyigc20200002
Abstract   PDF (1397KB)
Advanced Layered Double Hydroxide-Based Electrocatalysts for Electrocatalytic Oxygen Evolution Reaction
Tariq Ali, Niaz Muhammad, Tingzhou Yang, and Chenglin Yan
doi: 10.21127/yaoyigc20200001
Abstract   PDF (477KB)
Ultrasensitive in-vitro Detection Assay for Non-invasive Alzheimer’s Disease Diagnosis
See-Lok Ho, Hei-Nga Chan, Hung-Wing Li, Man-Shing Wong
doi: 10.21127/yaoyigc20190035
Abstract   PDF (165KB)
  • Current Issue
      15 September 2020, Volume 6 Issue 3 Previous Issue   
    For Selected: View Abstracts Toggle Thumbnails
    Contents: Gen. Chem. 3/2020
    General Chemistry
    General Chemistry. 2020, 6 (3): 0-0.  
    Abstract   PDF (597KB) ( 5 )
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    Amino Acids in Boron Neutron Capture Therapy—Prospects for Precise Treatment of Malignant Brain Tumors
    Juri M. Timonen
    General Chemistry. 2020, 6 (3): 190024-190024.   DOI: 10.21127/yaoyigc20190024
    Abstract   PDF (397KB) ( 98 )
    During the last 60 years, a great number of boron-containing compounds have been synthesized and designated as potential boron carriers for boron neutron capture therapy (BNCT) of several types of cancer. Several of these putative boron carriers are derivatives of α-amino acids (AAs). Despite sixty years of research, there are only two compounds used in the clinic including boronophenylalanine (BPA). Cancer cells have long been known to consume enormous amounts of nutrients such as AAs. Recent studies have revealed many mechanisms, through which they fulfill their demand for nutrients. The large amino acid transporter 1 (LAT1) is an extensively studied transporter. Recent studies have expanded our knowledge and understanding of the structure of LAT1 and its mode of action. It has been demonstrated that BPA and some other AA-based boron carriers are transported by LAT1 into cancer cells. In summary, these advances have opened new prospects for designing novel LAT1-targeted AA-based boron carriers for malignant brain tumors.
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    Chemical Sensors towards Environmental Toxic Molecule Monitoring: Fluores-cent Probes for Detection of Thiophenol
    Lirong Jiang, Juanjuan Wu, Douyong Min, João Rodrigues, Ruilong Sheng
    General Chemistry. 2020, 6 (3): 190027-190027.   DOI: 10.21127/yaoyigc20190027
    Abstract   PDF (547KB) ( 83 )
    Thiophenols, a family of important industrial chemicals, is highly toxic for aquatic organisms and human beings. Developing new chemical sensors with the merit of fast, low cost, portable, selective and sensitive, as well as visualizable signal output for efficient detection of thiophenols, is highly desirable. This spotlight article reviewed and discussed the current trend and statement of thiophenols-specific fluorescent probes. Moreover, the future outlook in this field was also stated.
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    Protein-Pd Complexes Conjugates as Artificial Enzymes
    Jose M Palomo, Esteban P. Urriolabeitia
    General Chemistry. 2020, 6 (3): 190030-190030.   DOI: 10.21127/yaoyigc20190030
    Abstract   PDF (302KB) ( 52 )
    The combination of enzymes and palladium organometallic complexes has been recently developed for the creation of new types of artificial metalloenzymes. Different methods considering the kind of protein used, from a core protein to an enzyme, or the strategies for the selective insertion of the organometallic complex from direct Pd bonding to protein amino acid, affinity interactions or covalent attachment by a Pd complex ligand have been developed. This methodology affords new Pd catalysts with highest selectivity and activity in different reactions at milder conditions compared with the free Pd complexes.
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    Applications of Ferroelectric Materials in the Field of Photovoltaics
    Xinshu Luo, Shixin Xue, Jingbo Zhang
    General Chemistry. 2020, 6 (3): 190032-190032.   DOI: 10.21127/yaoyigc20190032
    Abstract   PDF (430KB) ( 146 )
    To solve the severe energy shortages, a variety of photovoltaic devices such as silicon solar cells, inorganic thin film solar cells, perovskite solar cells, dye-sensitized solar cells, organic solar cells and quantum dot solar cells, have been developed for the utilization of solar energy. Major studies focus on how to improve the photovoltaic performance of these solar cells. Some of ferroelectric materials can be spontaneously polarized and have spontaneous polarization dipole moment inside at room temperature. Recently, some of ferroelectric materials are introduced in these solar cells due to their special properties. They can be used not only as light absorbing materials in ferroelectric solar cells, but also as functional materials due to their ferroelectric characteristic. The measurable macroscopic electric field can be formed inside ferroelectric materials film that can be used as built-in electric field for photovoltaic devices to separate electron-hole pairs and facilitate their transport. Therefore, the introduction of ferroelectric materials into several important solar cells can accelerate the transport rate of photogenerated electrons, thus the short-circuit photocurrent of the cells can be increased and the light-to-electric conversion efficiency is also effectively improved. In this minireview, we summarized the applications of ferroelectric materials in the field of photovoltaics to improve their photovoltaic performance.
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    Effect of Surface Modified Fullerene C70 on the ROS Production and Cellular Integrity Using Chinese Hamster Ovarian Cells
    S. Anju, J. Ashtami, P. V. Mohanan
    General Chemistry. 2020, 6 (3): 190022-190022.   DOI: 10.21127/yaoyigc20190022
    Abstract   PDF (1034KB) ( 115 )
    Fullerene, a distinct buckyball structured carbon allotrope, has immense popularity among various scientific disciplines. Comparing various fullerene allotropes, recent attention is focused on C70 fullerene owing to it potent applications in various interdisciplinary arenas including optoelectronics, photovoltaics as well as in biomedical technology. Although C70 suggests as a tunable material in biomedicine, con-vincing results about its toxic effects are still under controversy, which recommends the necessity for proper toxicity evaluation. Dextran polysaccharide was effectively coated on C70 to overcome the poor dispersion in water and for achieving proper stabilization. The as-prepared material was further characterized using various sophisticated techniques such as DLS, TEM, FTIR and zeta potential. Chinese Hamster Ovarian cell lines (CHO) served as the subject for major experiments. Various cytotoxicity assays and DCFH-DA probe ROS scavenging analysis were done. Morphological examinations of major sub-cellular organelles were carried out with the aid of fluorescent microscopy for nuclear condensation, mitochondrial membrane potential, lysosomal integrity, cytoskeletal integrity, etc. Flow cytometric FACS analysis for possible apoptosis-necrosis mediated cell death assessment and DNA ladder experiment for genotoxicity was done. Cell viability assays show up to 80% live CHO cells after dextran-coated C70 treatment for 24 h. The fluorescent staining results that confirm intact or-ganelles further prove the non-toxic nature of dextran-coated C70. DNA laddering assay results ex-clude chances for genotoxic potential of dextran-coated C70. Experimental results of the present study indicate that dextran stabilized C70 fullerene is a potent candidate material for futuristic healthcare ap-plications.
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    Role of Oxygen Defects on Photoelectrochemical Activity of ZnO Nanorods Grown on Transparent Conducting Oxide Thin Film
    Hasmat Khan, Srikrishna Samanta, Malobi Seth, Sunirmal Jana
    General Chemistry. 2020, 6 (3): 190025-190025.   DOI: 10.21127/yaoyigc20190025
    Abstract   PDF (1155KB) ( 83 )
    ZnO nanorods (NRs) were grown onto ZnO seed layer deposited FTO glass substrate via hydrothermal technique at ~95 °C. The as-deposited samples were further heat-treated at ~400 °C in a furnace under air at-mosphere. With varying time, the kinetic study of the growth of ZnO towards NRs formation was also performed. To enhance oxygen defects such as oxygen vacancy in the NRs, the thermally cured samples were further heat-treated in 5% H2 gas atmosphere at ~350 °C. Morphological and microstructural analyses, estimation of oxygen vacancy in the samples were carried out by field emission scanning and transmission electron mi-croscopies and X-ray photoelectron spectroscopy, respectively. Moreover, the optical properties of the specimen were also characterized by photoluminescence spectral study. A co-relation was also made between the reduced gas treatment time and the photoelectrochemical (PEC) activity of the samples. The ZnO NRs synthesized by optimizing the time for the growth of NRs and the reduced gas treatment time exhibited sig-nificant improvement in PEC activity. This work could make an avenue for enhancing the PEC activity of other hierarchically structured metal oxide semiconductors.
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    Chemical Dehydrogenation of Hydrogenated Single Layer Graphene for Reversible Electrical Conductivity
    Prathana Paul Chowdhury, Tania Chatterjee, Arnab Mukherjee
    General Chemistry. 2020, 6 (3): 190034-190034.   DOI: 10.21127/yaoyigc20190034
    Abstract   PDF (828KB) ( 64 )
    Chemical functionalization of graphene greatly expands its potential in electronic, photovoltaics and bio-logical applications. The band gap tunability of graphene achieved during the process of its hydrogenation and dehydrogenation can open its potential as an acceptor material in organic photovoltaic (OPV) solar cells. In this paper, we report a rapid and extensive hydrogenation of single layer graphene (SLG) by Birch reduction followed by its oxidation back to the conducting SLG. Dehydrogenation of hydrogenated SLG using 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) as an oxidising agent was performed successfully. Raman, FT-IR and UV-Vis spectra provides supporting evidence for a successful dehydrogenation reaction. A control experiment without DDQ as an oxidant confirms its active role as an oxidising agent. Magnetic moment study reveals a reversibility of ferromagnetic hydrogenated SLG to a paramagnetic dehyrdrogenated SLG. Finally, the sheet resistance measurement of pristine, hydrogenated and dehydrogenated SLG shows almost complete reversal of the electrical conductivity.
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