Chem. Commun.

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Catalyst-controlled reverse selectivity in C-C bond formation: NHC-Cu-catalyzed [small alpha]-selective allylic alkylation with organolithium reagents

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8142-8145
DOI: 10.1039/C5CC01521A, CommunicationStefano F. Pizzolato, Massimo Giannerini, Pieter H. Bos, Martin Fananas-Mastral, Ben L. Feringa
An efficient and highly [small alpha]-selective copper-catalyzed allylic alkylation of allylic halides with organolithium reagents is presented.
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Nitrogen-doped carbon nanotubes with metal nanoparticles as counter electrode materials for dye-sensitized solar cells

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8146-8149
DOI: 10.1039/C5CC01379H, CommunicationYedi Xing, Xiaojia Zheng, Yihui Wu, Mingrun Li, Wen-Hua Zhang, Can Li
Nitrogen-doped carbon nanotubes confining Co and Ni nanoparticles are employed as counter electrodes (CEs) in dye-sensitized solar cells, showing photovoltaic performance comparable to or superior to the devices with sputtered platinum as the CE.
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Site-specific fluorescence spectrum detection and characterization of hASIC1a channels upon toxin mambalgin-1 binding in live mammalian cells

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8153-8156
DOI: 10.1039/C5CC01418B, CommunicationMing Wen, Xiaoqi Guo, Peibei Sun, Liang Xiao, Juan Li, Ying Xiong, Jin Bao, Tian Xue, Longhua Zhang, Changlin Tian
Fluorescence spectrum detection in live mammalian cells was applied for conformational response analysis of hASIC1a channels upon toxin binding.
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Tetracoordinate silicon complexes of 1,2-bis(indol-2-yl)benzene as blue-emitting dyes in the solid state

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8123-8125
DOI: 10.1039/C5CC01625H, CommunicationTakayuki Tanaka, Atsuhiro Osuka
1,2-Bis(indol-2-yl)benzene was prepared and found to serve as an effective bidentate ligand to form stable silicon complexes bearing two N-Si bonds.
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Mix and print: fast optimization of mesoporous CuCeZrOw for catalytic oxidation of n-hexane

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8157-8160
DOI: 10.1039/C5CC01078K, CommunicationFenfen Huang, Shenliang Wang, Wuzhong Yi, Shihui Zou, Changlei Chen, Liping Xiao, Xiaonao Liu, Jie Fan
Fast optimization of mesoporous ternary metal oxide (CuCeZrOw) catalysts for n-hexane oxidation is achieved via a newly developed combinatorial approach based on ink-jet printing assisted synthesis and multi-dimensional group testing.
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Turn-on and label-free fluorescence detection of lead ions based on target-induced G-quadruplex formation

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8165-8168
DOI: 10.1039/C5CC01590A, CommunicationLijun Xu, Xiaoqiang Shen, Shanni Hong, Jine Wang, Yuanyuan Zhang, Hongyan Wang, Jianye Zhang, Renjun Pei
Using a guanine-rich sequence (AGRO100) and N-methyl mesoporphyrin IX (NMM), a turn-on and label-free fluorescent Pb2+ sensor with high sensitivity and low background fluorescence was presented as a representative of five turn-on sensing systems.
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Automated growth of metal-organic framework coatings on flow-through functional supports

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8169-8172
DOI: 10.1039/C5CC01186H, CommunicationF. Maya, C. Palomino Cabello, S. Clavijo, J. M. Estela, V. Cerda, G. Turnes Palomino
Metal-organic framework coatings on flow-through functional supports were prepared using automated flow-based techniques.
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A reversible and selective chemosensor based on intramolecular NHNH2 hydrogen bonding for cyanide and pH detection

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8173-8176
DOI: 10.1039/C5CC01280E, CommunicationChuanxiu Zhang, Kai Ji, Xinyu Wang, Hongwei Wu, Chuanxiang Liu
A highly selective and reversible chemosensor for cyanide and pH detection was developed based on intramolecular NHNH2 hydrogen bonding.
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Exploiting anthracene photodimerization within peptides: light induced sequence-selective DNA binding

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8130-8133
DOI: 10.1039/C5CC01618E, CommunicationGemma A. Bullen, James H. R. Tucker, Anna F. A. Peacock
Here we detail the first example of anthracene photodimerisation in peptides, and use it to trigger a selective biomolecular recognition event.
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(3E,7E)-3,7-Bis(2-oxoindolin-3-ylidene)-5,7-dihydropyrrolo[2,3-f]indole-2,6(1H,3H)-dione based polymers for ambipolar organic thin film transistors

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8093-8096
DOI: 10.1039/C5CC01021G, CommunicationYinghui He, Chang Guo, Bin Sun, Jesse Quinn, Yuning Li
A novel acceptor, (3E,7E)-3,7-bis(2-oxoindolin-3-ylidene)-5,7-dihydropyrrolo[2,3-f]indole-2,6(1H,3H)-dione, is synthesized and used for donor-acceptor polymer semiconductors.
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Unprecedented one-pot synthesis of an unsymmetrical cisplatin-based Pt(IV)-acetamidato complex

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8051-8053
DOI: 10.1039/C5CC02477C, CommunicationGiorgio Pelosi, Mauro Ravera, Elisabetta Gabano, Federico Fregonese, Domenico Osella
We describe herein a novel Pt(IV)-acetamidato complex as a result of the one-pot reaction between cisplatin and the highly reactive peroxyacetimidic acid generated in situ.
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Tuned red NIR phosphorescence of polyurethane hybrid composites embedding metallic nanoclusters for oxygen sensing

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8177-8180
DOI: 10.1039/C5CC01867F, CommunicationMaria Amela-Cortes, Serge Paofai, Stephane Cordier, Herve Folliot, Yann Molard
Phosphorescent metallic clusters are functionalized and integrated in polyurethane by copolymerization. Solid state quantum yield measurements show a drastic and reversible enhancement of nanocomposite luminescence depending on its surrounding atmosphere.
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Asymmetric palladium-catalyzed umpolung cyclization of allylic acetate-aldehyde using formate as a reductant

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8027-8030
DOI: 10.1039/C5CC02176F, CommunicationHirokazu Tsukamoto, Ayumu Kawase, Takayuki Doi
Asymmetic palladium/chiral diphosphine-catalyzed umpolung cyclization of allylic acetate-aldehyde using formate as a reductant affords cis-disubstituted pyrrolidine, tetrahydrofuran, and spiro carbocycle.
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G-quadruplex ligands exhibit differential G-tetrad selectivity

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8048-8050
DOI: 10.1039/C5CC02252E, CommunicationOpen Access Open Access Creative Commons Licence&nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.D. D. Le, M. Di Antonio, L. K. M. Chan, S. Balasubramanian
Site-specific fluorescence quench assay allows for targeted G-quadruplex equilibrium binding measurements to investigate G-tetrad selective ligands.
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Primary hepatocyte imaging by multiphoton luminescent graphene quantum dots

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8041-8043
DOI: 10.1039/C5CC01801C, CommunicationSung Ho Song, Min-Ho Jang, Jong-Min Jeong, Hyewon Yoon, Yong-Hoon Cho, Won-Il Jeong, Bo-Hyun Kim, Seokwoo Jeon
We demonstrate a successful application of water soluble graphene quantum dots for multiphoton fluorescence imaging of primary hepatocytes.
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Palladium-catalyzed ring opening of norbornene: efficient synthesis of methylenecyclopentane derivatives

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8031-8033
DOI: 10.1039/C5CC02246K, CommunicationXin-Xing Wu, Yi Shen, Wen-Long Chen, Si Chen, Xin-Hua Hao, Yu Xia, Peng-Fei Xu, Yong-Min Liang
The first palladium-catalyzed ring opening of norbornene to prepare methylenecyclopentane derivatives has been established.
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A rationally designed peptidomimetic biosensor for sialic acid on cell surfaces

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8112-8115
DOI: 10.1039/C5CC01662B, CommunicationPreeti Madhukar Chaudhary, Raghavendra Vasudeva Murthy, Rohan Yadav, Raghavendra Kikkeri
We have developed peptidomimetic sialic acid (Sia) biosensors using boronic acid and arginine groups on the peptide backbone.
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Inhibited fragmentation of mAbs in buffered ionic liquids

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8089-8092
DOI: 10.1039/C5CC01877C, CommunicationRomiza R. Mazid, R. Vijayaraghavan, Douglas R. MacFarlane, Christina Cortez-Jugo, Wenlong Cheng
Choline-based buffered ionic liquids have been demonstrated to greatly inhibit enzymatic degradation of antibodies, and are promising as next-generation biological buffers.
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Chemically and electrochemically induced expansion and contraction of a ferrocene rotor

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8161-8164
DOI: 10.1039/C5CC01973G, CommunicationSynove O. Scottwell, Anastasia B. S. Elliott, Karl J. Shaffer, Ayman Nafady, C. John McAdam, Keith C. Gordon, James D. Crowley
A 2,2[prime or minute]-bipyridine-appended ferrocene rotor can be switched, upon treatment with [Cu(CH3CN)4](PF6) and 6,6[prime or minute]-dimesityl-2,2[prime or minute]-bipyridine, from the stacked (syn) conformation to the unstacked (anti) conformation. The switching was completely reversible and could be triggered either chemically, or electrochemically.
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Mechanochemical reactions studied by in situ Raman spectroscopy: base catalysis in liquid-assisted grinding

29 April, 2015 - 13:17

Chem. Commun., 2015, 51,8058-8061
DOI: 10.1039/C5CC01915J, CommunicationMartina Tireli, Marina Juribasic Kulcsar, Nikola Cindro, Davor Gracin, Nikola Biliskov, Mladen Borovina, Manda Curic, Ivan Halasz, Krunoslav Uzarevic
Monitoring by in situ Raman spectroscopy of a mechanochemical substitution reaction on a carbonyl group reveals base catalysis akin to catalysis in solution.
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