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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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Shengbin Lei Dr. An Ver Heyen Dr. Steven De Feyter Prof. Dr. Mathieu Surin Dr. Roberto Lazzaroni Prof. Dr. Sabine Rosenfeldt Dr. Matthias Ballauff Prof. Dr. Peter Lindner Dr. Dennis Mössinger Sigurd Höger Prof. Dr. 《Chemistry (Weinheim an der Bergstrasse, Germany)》2009,15(11):2518-2535
Round and round : Covalently bound spokes induce an efficient template‐directed cyclization towards a rigid molecular wheel (see figure) and afford dramatically increased shape‐persistence properties compared with non‐strutted macrocycles.
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Richard M. Ibberson Dr. Amelia J. Fowkes Dr. Matthew J. Rosseinsky Prof. William I. F. David Prof. Peter P. Edwards Prof. 《Angewandte Chemie (International ed. in English)》2009,48(8):1435-1438
Metal lite : High‐resolution neutron powder diffraction data reveals that the body‐centered cubic crystal structure of lithium(0)tetraamine transforms to a simple cubic structure below 22 K. The detailed structure determinations will allow new insights into the coupled structural and electronic properties of the lightest metal.
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Huan Wang Dr. Chuan Zhao Dr. Anand I. Bhatt Dr. Douglas R. MacFarlane Prof. Jia‐Xing Lu Prof. Alan M. Bond Prof. 《Chemphyschem》2009,10(2):455-461
Electrode‐dependent potential windows (see picture, GC=glassy carbon) are determined for five dialkylammonium carbamate (dialcarb) room‐temperature ionic liquids in a systematic study of their physical and electrochemical properties. The viscosity and conductivity of the dialcarb ionic liquids, which are “distillable” at low temperature, are comparable to those of some conventional room‐temperature ionic liquids.
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Yan Lee Dr. Takehiko Ishii Dr. Horacio Cabral Dr. Hyun Jin Kim Ji‐Hun Seo Nobuhiro Nishiyama Dr. Hiroki Oshima Kensuke Osada Dr. Kazunori Kataoka Prof. Dr. 《Angewandte Chemie (International ed. in English)》2009,48(29):5309-5312
Special delivery! Polyionic complex (PIC) micelles that contain the charge‐conversional moieties citaconic amide or cis‐aconitic amide were developed for cytoplasmic protein delivery. The increase of the charge density on the protein cargo helped the stability of the PIC micelles without cross‐linking, and the charge‐conversion in endosomes induced the dissociation of the PIC micelles to result in efficient endosomal release (see picture).
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Eric S. Schmidtmann Dipl.‐Chem. Martin Oestreich Prof. Dr. 《Angewandte Chemie (International ed. in English)》2009,48(25):4634-4638
Once difficult to obtain , the title compounds can be prepared in virtually enantiomerically pure form with a bis(triorganostannyl) zinc reagent (see scheme). Subsequent diastereoselective thermal (left) and Lewis acid promoted reactions (right) illustrate the synthetic potential of these compounds.
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Nicolas Mackiewicz Dr. Jacques A. Delaire Prof. A. William Rutherford Dr. Eric Doris Dr. Charles Mioskowski Dr. 《Chemistry (Weinheim an der Bergstrasse, Germany)》2009,15(15):3882-3888
Change happens : Acridine–carbon nanotube nanohybrids were built (see figure) and their photoinduced electron‐transfer properties investigated, showing variable behaviour depending on the acridine partner.
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Johann Elbaz Michal Moshe Itamar Willner Prof. 《Angewandte Chemie (International ed. in English)》2009,48(21):3834-3837
Open sesame : Aptamer–substrate complexes activate the coherent operation of two tweezers that act as a “SET–RESET” logic system. Each tweezer cycles between a fluorescent open state and a closed quenched state (Q=quencher, F=fluorophore) when triggered by adenosine monophosphate (AMP) and adenosine deaminase (AD).
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Gerhard F. Swiegers Dr. Junhua Huang Dr. Robin Brimblecombe Jun Chen Dr. G. Charles Dismukes Prof. Dr. Ulrich T. Mueller‐Westerhoff Prof. Dr. Leone Spiccia Prof. Dr. Gordon G. Wallace Prof. Dr. 《Chemistry (Weinheim an der Bergstrasse, Germany)》2009,15(19):4746-4759
Molecular machines? The factors involved in and the fundamental nature of a “mechanical” action within molecular catalysis is explored in detail. Such mechanical homogeneous catalysts are rare but not unknown (see graphic). The spatial and temporal nature of their catalytic action is considered. Potential implications for mimicry of enzymes are discussed.