Royal Society of Chemistry

N-Alkylated and N,N-dialkylated 1,6-diaminoperylene diimides synthesized via copper catalyzed direct aromatic amination

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC02124J, CommunicationGesche Rauch, Sigurd Hoger
Atom economic catalytic aromatic aminations by stirring perylene diimides in amines under aerobic conditions in the presence of a Cu(II) salt.
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Design of tetraplex specific ligands: cyclic naphthalene diimide

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC01005A, CommunicationYugo Esaki, Md. Monirul Islam, Satoshi Fujii, Shinobu Sato, Shigeori Takenaka
Cyclic naphthalene diimide 1 bound to hybrid-type tetraplex DNA from 5[prime or minute]-AGGG(TTAGGG)3-3[prime or minute] (K = 8.6 [times] 106 M-1) with 260-fold greater affinity than that when binding to double stranded oligonucleotide consisting of 5[prime or minute]-GGG AGG TTT CGC-3[prime or minute] and 3[prime or minute]-CCC TCC AAA GCG-5[prime or minute] (nK = 3.3 [times] 104 M-1) with 0.5 [small mu ]M of IC50 for telomerase activity.
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The template effect of solvents on high yield synthesis, co-cyclization of pillar[6]arenes and interconversion between pillar[5]- and pillar[6]arenes

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC01968G, CommunicationTomoki Ogoshi, Naosuke Ueshima, Tomohiro Akutsu, Daiki Yamafuji, Takuya Furuta, Fumiyasu Sakakibara, Tada-aki Yamagishi
We have successfully synthesized a pillar[6]arene in high yield and a co-pillar[6]arene by a thermodynamically controlled cyclization process.
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Label-free detection of C-reactive protein using highly dispersible gold nanoparticles synthesized by reducible biomimetic block copolymers

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC01855A, CommunicationYasuhiko Iwasaki, Toshihiro Kimura, Masaki Orisaka, Hideya Kawasaki, Tatsuro Goda, Shin-ichi Yusa
The label-free detection of CRP as an infection biomarker was successfully demonstrated by using the biomimetic block copolymer-protected gold nanoparticles.
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Impact of molecular charge on GLUT-specific cellular uptake of glucose bioprobes and in vivo application of the glucose bioprobe, GB2-Cy3

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC00955J, CommunicationJongmin Park, Jung In Um, Ala Jo, Jinho Lee, Da-Woon Jung, Darren R. Williams, Seung Bum Park
Based on our study on the effect of the molecular charge of glucose bioprobes, we applied GB2-Cy3 to in vivo imaging in the zebrafish model.
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The detection of thrombin using a mixture of a fluorescent conjugated polyelectrolyte and fibrinogen and implementation of a logic gate

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC01495B, CommunicationDaigeun Kim, Taek Seung Lee
A highly sensitive and selective detection of thrombin is accomplished using an emission color-tunable conjugated polyelectrolyte. An implementation of a combined logic gate was realized upon emission modulation of the system including the polymer, fibrinogen, thrombin, and heparin.
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Facile synthesis of asymmetric Ag-organosilica hybrid nanoparticles with tunable morphologies and optical properties

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC02137A, CommunicationYangyi Sun, Min Chen, Zengbo Wang, Limin Wu
This study reports a simple and novel method for synthesizing asymmetric Ag-organosilica hybrid nanoparticles with finely-tuned morphologies and optical properties.
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Triphenylphosphine-catalysed amide bond formation between carboxylic acids and amines

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC01861C, CommunicationDanny C. Lenstra, Floris P. J. T. Rutjes, Jasmin Mecinovic
Unactivated carboxylic acids and amines undergo organocatalytic Ph3P/CCl4-mediated amide bond formation by employing in situ reduction of triphenylphosphine oxide to triphenylphosphine in the presence of diethoxymethylsilane and bis(4-nitrophenyl)phosphate.
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Novel tartrate-derived guanidine-catalyzed highly enantio- and diastereoselective Michael addition of 3-substituted oxindoles to nitroolefins

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC01817F, CommunicationLiwei Zou, Xiaoze Bao, Yuanyuan Ma, Yuming Song, Jingping Qu, Baomin Wang
A highly asymmetric conjugate addition of 3-substituted oxindoles to nitroolefins was effected by a novel tartrate-derived guanidine with an extraordinarily broad substrate scope.
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Unusual redox stability of neptunium in the ionic liquid [Hbet][Tf2N]

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC01835D, CommunicationKristy Long, George Goff, Wolfgang Runde
In contrast to its aqueous chemistry, neptunium exhibits a highly complex redox behavior in the ionic liquid betaine bistriflimide, [Hbet][Tf2N]. Spectroscopic studies have shown for the first time that up to three oxidation states (IV, V and VI) and up to six neptunium species can exist simultaneously. Both redox reactions and coordination of betaine lead to an unprecedented stability of Np(IV) and Np(VI).
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Molecularly imprinted nanoparticles as tailor-made sensors for small fluorescent molecules

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC01516A, CommunicationJoseph K. Awino, Yan Zhao
Molecular imprinting within fluorescently labeled cross-linked micelles yielded highly specific, FRET-based sensors for water-soluble naphthyl derivatives.
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Detection of A[small beta] plaques in mouse brain by using a disaggregation-induced fluorescence-enhancing probe

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC02011A, CommunicationYeon Ok Lee, Jung-Won Shin, Chunsik Yi, Yun Hak Lee, Nak-Won Sohn, Chulhun Kang, Jong Seung Kim
We herein report a fluorescence probe 1 capable of detecting water-soluble oligomeric A[small beta] aggregates and A[small beta] fibrils. Upon injection into A[small beta]42-challenged mouse brains, probe 1 shows increased fluorescence intensity, indicating its facile binding to extracellular A[small beta] fibrils in brain tissues.
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Synthesis and electrocatalytic performance of atomically ordered nickel carbide (Ni3C) nanoparticles

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC01336K, CommunicationNor A. Fadil, Govindachetty Saravanan, Gubbala V. Ramesh, Futoshi Matsumoto, Hideki Yoshikawa, Shigenori Ueda, Toyokazu Tanabe, Toru Hara, Shinsuke Ishihara, Hideyuki Murakami, Katsuhiko Ariga, Hideki Abe
The smallest Ni3C Nps ever produced exhibited a catalytic activity superior to that of Ni Nps in the electrooxidation of NaBH4.
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Biotin-conjugated N-methylisatoic anhydride: a chemical tool for nucleic acid separation by selective 2[prime or minute]-hydroxyl acylation of RNA

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC01134A, CommunicationS. Ursuegui, N. Chivot, S. Moutin, A. Burr, C. Fossey, T. Cailly, A. Laayoun, F. Fabis, A. Laurent
An isatoic anhydride derivative, bearing a biotin and a disulfide linker, was specifically designed for separation of nucleic acids by a selective 2[prime or minute]-hydroxyl acylation of RNA.
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A silver(I) coordinated phenanthroline-based polymer with high ethylene/ethane adsorption selectivity

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC02143F, CommunicationChao Yu, Matthew G. Cowan, Richard D. Noble, Wei Zhang
A non-porous silver(I) coordinated phenanthroline-based polymer was constructed through Sonogashira coupling, which shows a highly ideal ethylene/ethane adsorption selectivity (15/1) and high ethylene uptake (5.0 mmol g-1) at ambient temperature and pressure.
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A preferable molecular crystal membrane for H2 gas separation

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC01494D, CommunicationYuichi Takasaki, Satoshi Takamizawa
A high H2 permeability (P), which does not obey the Knudsen diffusion law, was observed through a microporous single-crystal membrane.
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The use of a rigid tritopic phosphonic ligand for the synthesis of a robust honeycomb-like layered zirconium phosphonate framework

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC01253D, CommunicationMarco Taddei, Ferdinando Costantino, Riccardo Vivani, Stefano Sabatini, Sang-Ho Lim, Seth M. Cohen
1,3,5-Tris(4-phosphonophenyl)benzene was synthesized via a microwave heating assisted route and was subsequently used for the preparation of a new zirconium phosphonate with honeycomb-like structure displaying remarkable thermal stability and hydrolysis resistance.
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A unique surface-initiated property of nanoparticles and application for the synthesis of hybrid organic-inorganic nanoparticles

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC01921K, CommunicationH. W. Wang, Y. F. Xing, Y. Li, D. D. Ni, X. F. Wei, H. H. Chen, H. H. Song, X. W. Qi, X. J. Wen
Fe3O4 nanoparticles initiate the polymerization of a vinyl monomer of acrylamide on the surface to form novel organic-inorganic hybrid nanomaterials.
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68Ga chelating bioorthogonal tetrazine polymers for the multistep labeling of cancer biomarkers

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, 50,5215-5217
DOI: 10.1039/C3CC49530B, CommunicationBrandon Nichols, Zhengtao Qin, Jun Yang, David R. Vera, Neal K. Devaraj
There has been significant interest in the use of bioorthogonal inverse Diels-Alder cycloadditions in molecular imaging. We have developed metal chelating tetrazine probes that extend tetrazine cycloadditions to the convenient and generator produced positron emitting isotope gallium-68 (68Ga).
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Enhanced activity and stability of organophosphorus hydrolase via interaction with an amphiphilic polymer

Chem. Commun. - 22 April, 2014 - 17:17

Chem. Commun., 2014, 50,5345-5348
DOI: 10.1039/C3CC47675H, CommunicationMinkyu Kim, Manos Gkikas, Aaron Huang, Jeon Woong Kang, Nisaraporn Suthiwangcharoen, Ramanathan Nagarajan, Bradley D. Olsen
A simple approach to enhancing the activity and stability of organophosphorus hydrolase (OPH) is developed based on interactions between the hydrophobic poly(propylene oxide) (PPO) block of amphiphilic Pluronics and the enzyme.
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