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Feng Gao Dr. Xuxu Yan Karine Auclair Prof. 《Chemistry (Weinheim an der Bergstrasse, Germany)》2009,15(9):2064-2070
Just five steps! The synthesis of a phosphonate‐linked aminoglycoside‐coenzyme A derivative (see scheme) that includes a Michael addition in water has been realized in just five steps.
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Anthony J. Zucchero Rebecca A. Shiels Psaras L. McGrier M. Alicia To Christopher W. Jones Prof. Uwe H. F. Bunz Prof. 《化学:亚洲杂志》2009,4(2):262-269
Silica scaffolding : By employing functionalized mesoporous SBA‐15 silica, novel fluorescent cruciform‐silica hybrid materials are generated which preserve the desirable solution properties of cruciforms in the solid state for potential use in sensory schemes.
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David R. Armstrong Dr. Joaquín García‐Álvarez Dr. David V. Graham Gordon W. Honeyman Dr. Eva Hevia Dr. Alan R. Kennedy Dr. Robert E. Mulvey Prof. 《Chemistry (Weinheim an der Bergstrasse, Germany)》2009,15(15):3800-3807
Unprecedented direct zincation of toluene can be achieved by using a bimetallic base that bypasses the acidic methyl group and instead affords a statistical mixture of the meta and para deprotonated regioisomers (see scheme).
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Liqing Ma Dr. Wenbin Lin Prof. 《Angewandte Chemie (International ed. in English)》2009,48(20):3637-3640
Stop the breathing : As the organic bridging ligands become more elaborate and large, the resulting MOFs tend to experience significant framework distortion (i.e., breathing) upon solvent removal. Rigidification of MOFs that are built from elongated tetracarboxylate bridging ligands by unusual interlocking and interpenetration leads to highly porous and robust hybrid materials.
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Kenneth Hoi‐Yiu Chan Dr. Jacky Wing‐Yip Lam Dr. Keith Man‐Chung Wong Dr. Ben‐Zhong Tang Prof. Dr. Vivian Wing‐Wah Yam Prof. 《Chemistry (Weinheim an der Bergstrasse, Germany)》2009,15(10):2328-2334
The aggregation and self‐assembly of square‐planar alkynylplatinum(II) complexes is induced by the use of a chiral polyacetylene with a helical conformation (see scheme). The chain helicity of the chiral polyacetylene under basic conditions has also been demonstrated to be enhanced by the presence of the positively charged platinum(II) complexes.
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Yue‐Biao Zhang Wei‐Xiong Zhang Fei‐Yue Feng Jie‐Peng Zhang Dr. Xiao‐Ming Chen Prof. 《Angewandte Chemie (International ed. in English)》2009,48(29):5287-5290
Making connections : A hydroxy‐centered trinuclear nickel cluster has been employed to construct a highly connected, highly symmetric framework with a uninodal nine‐connected topology. An array of triakis tetrahedra leads to a biporous intersecting‐channel system (see picture).
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SERS you right: The plasmon heating of gold nanoshells is exploited to yield the local conversion of amorphous TiO2 into anatase on the surface of polymeric colloidal crystals (see scheme). The resulting Au/TiO2 spots are active substrates for surface‐enhanced Raman spectroscopy and allow surface reactions and processes to be followed directly on‐site.
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Jörn Schmedt auf der Günne Dr. 《Angewandte Chemie (International ed. in English)》2009,48(19):3401-3403
On an atomic scale and with high sensitivity, solid‐state NMR spectroscopy can provide information about the electronic spin density and coupling mechanisms in paramagnetic compounds. The picture shows how the hyperfine splitting collapses through relaxation. Insights into which compounds are suitable and which approximations have to be made are given.
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Stefania Pettirossi Dr. Gianfranco Bellachioma Prof. Gianluca Ciancaleoni Dr. Cristiano Zuccaccia Dr. Daniele Zuccaccia Dr. Alceo Macchioni Prof. 《Chemistry (Weinheim an der Bergstrasse, Germany)》2009,15(21):5337-5347
Supra‐mega ion pairing : Multicationic organoruthenium dendrimers show a notable tendency to self‐aggregate when the concentration is increased, leading to megamers. This tendency increases with the generation. The self‐aggregation of dendrimers to megamers is coupled with a decrease in the extent of ion pairing, as illustrated.
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María J. Aldegunde Luis Castedo Prof. Dr. Juan R. Granja Prof. Dr. 《Chemistry (Weinheim an der Bergstrasse, Germany)》2009,15(19):4785-4787
Taxing taxanes : A new method for the preparation of alk‐2‐ene‐1,4‐diols from 1,3‐dienes, especially for geometrical constrained derivatives, via dioxirane derivative formation followed by TiIII‐induced oxirane ring opening, is described. The strategy has been very efficiently implemented to the construction of the 11‐ene‐10,13‐diol moiety present in taxol derivatives.
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Yanqiang Zhang Dr. Suojiang Zhang Prof. Dr. Xingmei Lu Dr. Qing Zhou Dr. Wei Fan XiangPing Zhang Dr. 《Chemistry (Weinheim an der Bergstrasse, Germany)》2009,15(12):3003-3011
CO 2 is locked up : Dual amino‐functionalised phosphonium ionic liquids (ILs; see figure) have been prepared. The ILs have excellent thermal properties, such as low glass transition temperatures and high thermal decomposition temperatures. The supported CO2 absorption of four of the ILs on porous SiO2 was found to approach one mol CO2 per mol IL, a factor of two greater than that reported before.
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Mohamed E. El‐Khouly Dr. Jung Hoon Kim Dr. Kwang‐Yol Kay Prof. Dr. Chan Soo Choi Dr. Osamu Ito Prof. Dr. Shunichi Fukuzumi Prof. Dr. 《Chemistry (Weinheim an der Bergstrasse, Germany)》2009,15(21):5301-5310
Fast moving : A new pentad (see figure) composed of silicon phthalocyanine (SiPc), as electron donor, that is connected with two units of naphthalenediimide (NDI) and fullerene C60, as electron acceptors, undergoes fast and efficient charge‐separation processes via the NDI and SiPc singlet excited states.
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Marta Sevilla Dr. Antonio B. Fuertes Dr. 《Chemistry (Weinheim an der Bergstrasse, Germany)》2009,15(16):4195-4203
Carbon‐rich‐quick scheme : A carbon‐rich solid product made up of uniform micrometer‐sized spheres of tunable diameter has been synthesized by the hydrothermal carbonization of saccharides. These microspheres possess a core–shell chemical structure based on the different nature of the oxygen functionalities between the core and the outer layer (see figure).
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