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971.
Selective and Sensitive Aqueous‐Phase Detection of 2,4,6‐Trinitrophenol (TNP) by an Amine‐Functionalized Metal–Organic Framework
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Biplab Joarder Aamod V. Desai Partha Samanta Soumya Mukherjee Dr. Sujit K. Ghosh 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(3):965-969
Highly selective and sensitive aqueous‐phase detection of nitro explosive 2,4,6‐trinitrophenol (TNP) by a hydrolytically stable 3D luminescent metal–organic framework is reported. The compound senses TNP exclusively even in the presence of other nitro‐compounds, with an unprecedented sensitivity in the MOF regime by means of strategic deployment of its free amine groups. Such an accurate sensing of TNP, widely recognized as a harmful environmental contaminant in water media, establishes this new strategic approach as one of the frontiers to tackle present‐day security and health concerns in a real‐time scenario. 相似文献
972.
Igor V. Pimkov Archana Nigam Kiran Venna Fraser F. Fleming Pavlo V. Solntsev Victor N. Nemykin Partha Basu 《Journal of heterocyclic chemistry》2013,50(4):879-886
The bicyclic pyran thiolone tetrahydro‐3αH‐[1,3]dithiolo[4,5‐β]pyran‐2‐thione ( 3a ) engages in a highly unusual fragmentation in the presence of DDQ. The pyran thiolone, 3a , was synthesized by chlorination of 3,4‐dihydro‐2H‐pyran ( 1 ) followed by condensing with CS2 and NaSH. Reaction of 3a with DDQ generates the isomerized pyran thiolone tetrahydro‐3αH‐[1,3]dithiolo[4,5‐β]pyran‐2‐thione ( 3b ) and 4‐benzyl‐5‐(3‐hydroxypropyl)‐1,3‐dithiole‐2‐thione ( 4 ) via a deep‐seated rearrangement. The identity of 3b was confirmed by single crystal X‐ray analysis: P21/c, a = 5.807(9) Å, b = 12.99(2) Å, c = 11.445(15), β = 113.23(6)°. Mechanistic experiments and computational insight is used to explain the likely sequence of events in the highly unusual formation of 4 . Collectively, these results establish fundamental reactivity patterns for further research in this area. 相似文献
973.
Dr. Devrani Mitra Dr. Hideaki Ogata Prof. Wolfgang Lubitz Brian C. Manor Prof. Thomas B. Rauchfuss Dr. Deborah Byrne Dr. Violaine Bonnefoy Prof. Francis E. Jenney Jr. Prof. Michael W. W. Adams Dr. Yoshitaka Yoda Dr. Ercan Alp Dr. Jiyong Zhao Prof. Stephen P. Cramer 《Angewandte Chemie (International ed. in English)》2013,52(2):724-728
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976.
Esmail Rezaei-Seresht Erfan Mireskandari Mitra Kheirabadi Hamid Cheshomi Hasan Rezaei-Seresht Leila Sadat Aldaghi 《Chemical Papers》2017,71(8):1463-1469
A series of novel azo compounds with extended π-conjugated systems were prepared by azo coupling reaction compounds trans-2-(4′-aminostyryl)-thiophene, 1-(4-aminophenyl)-4-phenyl-1,3-butadiene and 4-amino-4′-methoxystilbene with some phenols. The compounds were evaluated for their cytotoxicity against breast cancer adenocarcinoma (MCF-7), cervix adenocarcinoma (HeLa) and human embryonic kidney (HEK 293) cell lines using the MTT assay. The results showed all derivatives had more toxic effects than tamoxifen. Of all the compounds tested, the azo product obtained from coupling trans-2-(4′-Aminostyryl)-thiophene with 2-naphthol (compound 5b) exhibited the potent in vitro antiproliferative activity with IC50 27 ± 1 and 18 ± 0 µg/mL against MCF-7 and HeLa cell lines, respectively, while it was devoid of any cytotoxicity against normal HEK 293 cells even at 200 µg/mL. 相似文献
977.
Monojit Mitra Anowar Hossain Prankrishna Manna Somnath Ray Choudhury Surasak Kaenket Madeleine Helliwell 《Journal of Coordination Chemistry》2017,70(3):463-474
A Cu(II)-methylmalonate complex, (C3H7N6)4[Cu(II)(C4H4O4)2](H2O)4Cl2 (1) (where C3H7N6 = protonated melamine, C4H4O4 = methylmalonic acid), has been synthesized from aqueous media and its crystal structure was determined by single-crystal X-ray diffraction. The anionic Cu(II)-methylmalonate complex mediated formation of interesting supramolecular assemblies in the solid state by means of ionic interactions with protonated melamine. Moreover, other forces such as antielectrostatic H-bonding and π+–π+ interactions also play a crucial role in defining the final 3-D architecture of 1. An interesting stacking among protonated melamine molecules is studied by DFT calculations. Lattice water molecules and chlorides form various hydrogen bonds to take part in the self-assembly processes. 相似文献
978.
Seyoung Oh Byungil Kim Jung Young Kim Mitra Ghergherehchi Ho Seung Song Seung-wook Shin Jong Seo Chai 《Journal of Radioanalytical and Nuclear Chemistry》2017,314(3):1653-1658
The radioisotope 117mSn has recently attracted considerable attention because of its application in theranostics and its imaging using 159-keV γ-photons. In this study, we developed a target system that yielded 117mSn via a 116Cd(α, 3n)117mSn nuclear reaction. A separable Pt substrate was utilized to prepare the enriched 116Cd target to be irradiated, and the enriched 116Cd in a cadmium acetate solution was electroplated onto the Pt substrate. The substrate was thermally analyzed via ANSYS simulations, and the plating thickness was optimized through calculations with TALYS code. The production of 117mSn was confirmed through the emission measurement of inherent gamma rays. 相似文献
979.
Paola Gramatica Simona Kovarich Partha Pratim Roy 《Journal of computational chemistry》2013,34(20):1796-1796
We appreciate the interest of Dr. Rayne on our article and we completely agree that the dataset of (benzo‐)triazoles, which were screened by the hydroxyl radical reaction quantitative structure‐activity relationship (QSAR) model, 1 was not only composed of benzo‐triazoles but also included some simpler triazoles (without the condensed benzene ring), such as the chemicals listed by Dr. Rayne, as well as some related heterocycles (also few not aromatic). We want to clarify that in this article 1 (as well as in other articles 2 - 5 in which the same dataset was screened), for conciseness, the abbreviations (B)TAZs and BTAZs were used as general (and certainly too simplified) notations meaning an extended dataset of benzo‐triazoles, triazoles, and related compounds. © 2013 Wiley Periodicals, Inc. 相似文献
980.
Partha Sarathi Guru 《Journal of Dispersion Science and Technology》2013,34(7):898-907
Eggshell particles (ESP), a solid bio-waste, treated with sodium dodecylsulfate (SDS) have been examined for the adsorption of some tailor-made cationic styrylpyridinium dyes. The adsorbent is characterized through Fourier transform infrared spectroscopy and scanning electron microscopy. The anionic headgroups of the surfactant bilayer on the SDS-treated ESP (SDS-ESP) provide avenue for binding with the dye molecules. Dependence of equilibrium adsorption capacity on various adsorption parameters and effects of substituent and hydrophobic tail of the adsorbate on adsorption are enumerated. Physical adsorption obeying pseudo-second order kinetics has been proposed. (Supplemental materials are available for this article. Go to the publisher's online edition of Journal of Dispersion Science and Technology to view the free supplemental file.) 相似文献