Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science
Australian Journal of Chemistry

Australian Journal of Chemistry

Volume 70 Number 6 2017

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1,2-Diaryl-1,2-disodioethanes are easily prepared, versatile, and tunable diorganometals finding application in 1,2-reductive eliminations as well as in the degradation of several persistent organic pollutants as homogeneous synthetic equivalents of a highly reactive form of Na metal. Further applications as dinucleophiles and bases are also described.

CH16459Synthesis of a Tetraphenylethene-Substituted Tetrapyridinium Salt with Multifunctionality: Mechanochromism, Cancer Cell Imaging, and DNA Marking

Anushri Rananaware, Amanda N. Abraham, Duong Duc La, Vishal Mistry, Ravi Shukla and Sheshanath V. Bhosale
pp. 652-659
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A tetrapyridyl-substituted tetraphenylethylene (TPy-TPE) works as a good fluorescent visualiser for specific staining for cellular imaging and as a DNA marker.

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Several indeno[1,2-c]pyridazines were efficiently synthesised using the one-pot, three-component reaction of substituted indanones, arylglyoxalmonohydrates, and hydrazine in the presence of 1,5-diazabicyclo[4,3,0]non-5-ene (DBN) in water at room temperature.

CH16288Preparation and Characterization of PA6-PEG/Li High Performance Static Dissipation Composites

Chongling Yang, Shouzai Tan, Gengen Chen and Litao Guan
pp. 669-676
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A series of novel PA6-PEG/Li composites were developed by melt blending the PA6-PEG copolymer (10 wt-% PEG) with three different kinds of colourless lithium salts (LiCl, C18H35LiO2, LiAc). The PA6-PEG/LiCl composite showed an excellent static dissipation performance of 2.71 × 108 Ω square–1.

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The fluorescence intensity of CB[7]–PAL, CB[7]–BER, or CB[7]–COP system decreased with increasing amounts of oxaliplatin (l-OHP) added. The trend is attributed to the competition between l-OHP and PAL, BER, or COP molecules for occupancy of the CB[7] cavity.

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Cope rearrangement of bicycle[5.1.0]octa-2,5-diene and its 8-hetero- (N,O,P) and 4,8-dihetero-analogues has been investigated in the gas phase at the B3LYP/6-31+G* level. The results reveal that relative stabilities of the three-membered ring undergoing opening and the three-membered ring being formed as a result of the Cope rearrangement determine the feasibility and rate of the rearrangement.

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Hierarchical HZSM-5 were synthesised by controlled desilication in alkaline medium and used as catalyst for the selective oxidation of 2,3,6-trimethylphenol to 2,3,5-trimethyl-1,4-benzoquinone. The combined studies suggested that the nature of the solvent, intrinsic acidity, and shape selectivity of the hierarchical structure ensured high catalytic properties.

CH16224Open-Chain Crown-Ether-Derived Two-Photon Fluorescence Probe for Real-Time Dynamic Biopsy of Mercury Ions

Chibao Huang, Daohai Zhang, Junle Qu, Xiaonan Liu, Guanglian Zhao, Tingxiang Yuan and Yang Liu
pp. 705-711
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The probe developed in the present study can selectively detect Hg2+ ions in live cells and living tissues without interference from other metal ions and the membrane-bound probes, and its quenching constant is 8.73 × 105 M–1.

CH16357Ring-Opening Dispersion Polymerization of ʟ-Lactide with Polylactide Stabilizer in Supercritical Carbon Dioxide

Jinjun Deng, Shiping Zhan, Jingchang Wang, Zhijun Liu and Zhiyi Li
pp. 712-717
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The particle diameter distributions of PLLA show that the stabilizer S131 with short lipophilic segment could improve the particle diameter distribution range, compared with the long lipophilic segment of stabilizer S121. With increasing concentration of the stabilizer S131, the particle size decreased and particle distribution became narrow.

CH16562Aptamer-Based Fluorescent Switch for Sensitive Detection of Oxytetracycline

Mahsa Babaei, Seyed Hamid Jalalian, Hadi Bakhtiari, Mohammad Ramezani, Khalil Abnous and Seyed Mohammad Taghdisi
pp. 718-723
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In this paper, we introduce a novel aptasensor for fast detection of oxytetracycline (OTC), based on a triple helix molecular switch (THMS) complex formation. The limit of detection (LOD) of this sensor was 1.67 and 6.44 nM in phosphate buffer and milk samples, respectively. The sensor also showed a high selectivity towards OTC.

CH16537Dehydrogenative Coupling of Hydrosilanes and Alcohols by Alkali Metal Catalysts for Facile Synthesis of Silyl Ethers

Adimulam Harinath, Jayeeta Bhattacharjee, Srinivas Anga and Tarun K. Panda
pp. 724-730
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The RO–H/H–Si cross-dehydrogenative coupling (CDC) of alcohols and hydrosilanes with high yield (up to 99 %) and chemoselectivity for the production of silyl ethers using alkali metal salts [MN(SiMe3)2] (M = Li, Na, K) as pre-catalysts and under ambient conditions is presented.

CH16554Effective Dissolution of Biomass in Ionic Liquids by Irradiation of Non-Thermal Atmospheric Pressure Plasma

Kosuke Kuroda, Kai Shimomura, Tatsuo Ishijima, Kenji Takada, Kazuaki Ninomiya and Kenji Takahashi
pp. 731-734
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Lignocellulose has gained much interest as a potential renewable energy resource. However, it is hardly soluble. In this study, a non-thermal plasma was applied to dissolution of lignocellulose to ionic liquids. Chemically active species, which were generated by the plasma, induced decomposition of the lignin network, and consequently dissolution of biomass into ionic liquids was accelerated.

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Degradable polyanhydride-based nanoparticles are synthesized using thiol–ene ‘click’ polymerization followed by emulsification and solvent evaporation. These nanoparticles have tuneable degradation times, can be easily functionalized, and encapsulate payloads that can then be released upon degradation. Such degradable polymer nanoparticles have potential in many nano/bio-theranostic applications.

CH16455Ilimaquinone and 5-epi-Ilimaquinone: Beyond a Simple Diastereomeric Ratio, Biosynthetic Considerations from NMR-Based Analysis

Asmaa Boufridi, David Lachkar, Dirk Erpenbeck, Mehdi A. Beniddir, Laurent Evanno, Sylvain Petek, Cécile Debitus and Erwan Poupon
pp. 743-750
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Ilimaquinone is a biologically active sesquiterpene isolated from Dactylospongia sponges. An intriguing diastereomeric ratio is observed based on an impressive collection of samples. Biosynthetic and ecological considerations stem from this study.

CH16667Rates of Water Exchange in 2,2′-Bipyridine and 1,10-Phenanthroline Complexes of CoII and MnII

Shravan S. Acharya, Bjorn Winther-Jensen, Leone Spiccia and C. André Ohlin
pp. 751-754
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The catalytically and geochemically relevant rates of water exchange of four new CoII and one new MnII 2,2′-bipyridine and 1,10-phenanthroline complexes have been determined using the temperature-dependent line broadening of the 17O NMR signal from the solvent water.

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Professor Kenneth Seddon OBE, one of AJC’s longest-standing Editors, sadly passed away on 21 January from prostate cancer. Ken was one of the world's best ionic liquids experts. His consistent unwavering support, loyalty and advocacy for AJC over the last 10 years will be sorely missed.