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151.
M. Sakhawat Hussain Mazhar-ul-Haque Sk. A. Ali 《Journal of chemical crystallography》1999,29(1):33-38
The title compound crystallizes in the monoclinic space group P21/n, with a = 6.225(1), b = 14.612 (1), c = 15.520 (1) Å, = 96.6(3)°, Z = 4 and V = 1402.4Å3. The stereochemistry of the 7/5-fused ring system is trans, the 7-membered and the 5-membered rings are found to be in the chair and envelope conformations, respectively. This represents the first study of a compound containing the 7/5-ring skeleton shown in (3) below. 相似文献
152.
Full Solution‐Processed Synthesis and Mechanisms of a Recyclable and Bifunctional Au/ZnO Plasmonic Platform for Enhanced UV/Vis Photocatalysis and Optical Properties 下载免费PDF全文
Prof. Da‐Ren Hang Sk Emdadul Islam Prof. Chun‐Hu Chen Krishna Hari Sharma 《Chemistry (Weinheim an der Bergstrasse, Germany)》2016,22(42):14950-14961
The synthesis of noble metal/semiconductor hybrid nanostructures for enhanced catalytic or superior optical properties has attracted a lot of attention in recent years. In this study, a facile and all‐solution‐processed synthetic route was employed to demonstrate an Au/ZnO platform with plasmonic‐enhanced UV/Vis catalytic properties while retaining strengthened luminescent properties. The visible‐light response of photocatalysis is supported by localized surface plasmon resonance (LSPR) excitations while the enhanced performance under UV is aided by charge separation and strong absorption. The enhancement in optical properties is mainly due to local field enhancement effect and coupling between exciton and LSPR. Luminescent characteristics are investigated and discussed in detail. Recyclability tests showed that the Au/ZnO substrate is reusable by cleaning and has a long shelf life. Our result suggests that plasmonic enhancement of photocatalytic performance is not necessarily a trade‐off for enhanced near‐band‐edge emission in Au/ZnO. This approach may give rise to a new class of versatile platforms for use in novel multifunctional and integrated devices. 相似文献
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155.
Kumaresh Ghosh Sk. Sarfaraj Ali Soumen Joardar 《Journal of heterocyclic chemistry》2020,57(10):3558-3565
7-Azaindole has been used in designing new molecular structure 1 on enediyne spacer for its application in anion sensing. New structure 1 has been established as efficient fluorescent sensor of H2PO4− and F− ions in CH3CN containing 1% DMSO. While in presence of H2PO4− the emission at 418 nm is decreased to the significant extent in nonratiometric fashion, a ratiometric response in presence of F− is noted with a sharp isoemissive point and two anions are effectively distinguished over a series of other anions tested. A similar study on model compound 2 with indole motifs is done to prove the pivotal role of extra ring nitrogen in azaindole of 1 in the binding process. 相似文献
156.
Raja Sk Wasim Acharya R. Pujari P. K. 《Journal of Radioanalytical and Nuclear Chemistry》2020,323(3):1359-1366
Journal of Radioanalytical and Nuclear Chemistry - The in situ current normalized particle induced gamma-ray emission method using 4 MeV proton beam was utilized for total boron... 相似文献
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158.
Nabanita Kundu Kisholoy Bhattacharya Sk Md Towsif Abtab Muktimoy Chaudhury 《Tetrahedron letters》2012,53(22):2719-2721
‘One-pot’ synthesis of nitrogenous heterocyclic compounds (1 and 2) containing a pair of biologically relevant imidazo[1,5-a]pyridine moiety has been reported; compound 1 being a planar molecule, shows enough flexibility during its coordination to bivalent transition metal ions forming, for example, a triple stranded helicate with copper(II). 相似文献
159.
Agnieszka Skórska-Stania Magdalena Śliwa Kamil Musilek Kamil Kuca Josef Jampilek Robert Musiol Barbara J. Oleksyn Jiri Dohnal 《Structural chemistry》2010,21(3):495-501
The investigation of relationships between the molecular structure of the compounds capable to reactivate acetylcholinesterase
(AChE) inhibited by organophosphorus toxins, such as nerve agents and pesticides, is an important step toward synthesis of
more efficient antidota. In the present article, we describe the crystal structures of two new AChE reactivators, which are
bromides of (E)-1,4-bis(4-hydroxyiminomethylpyridinium)-but-2-ene (K075) and of 4,4′-bis(hydroxyiminomethyl)-1,1′-(1,4-phenylenedimethyl)-bispyridinium
(K114). Their molecular geometry and intermolecular interactions in the crystalline state are compared to those in the crystal
structures of the well-known AChE reactivators, obidoxime, and TMB-4. Inspection of hydrogen bonds and other short intermolecular
contacts in the crystalline AChE–obidoxime complex revealed their similarity to those observed in the crystal structures of
K075 and K114. 相似文献
160.
Jasimuddin S Yamada T Fukuju K Otsuki J Sakai K 《Chemical communications (Cambridge, England)》2010,46(44):8466-8468
Supramolecular photosynthetic systems made up of the [Ir(ppy)(2)(bpy)](+) and [Co(bpy)(3)](2+) cores (ppy = 2-phenylpyridinate, bpy = 2,2'-bipyridine) are in situ self-assembled in aqueous media to generate H(2) upon visible light irradiation, where one of them recorded a relatively high turnover number of 20. 相似文献