Chem. Commun.

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A fluorescent bistable [2]rotaxane molecular switch on SiO2 nanoparticles

22 January, 2015 - 12:54

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C4CC09976A, CommunicationZhan-Qi Cao, Qi Miao, Qi Zhang, Hong Li, Da-Hui Qu, He Tian
A fluorescent bistable [2]rotaxane was immobilized onto the surface of SiO2 nanoparticles through click reaction. The shuttling motion of the macrocycle component was driven by external acid-base stimuli both in solution and on SiO2 nanoparticles, accompanied by visual fluorescence changes.
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Graphite sulphate - a precursor to graphene

22 January, 2015 - 12:54

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C4CC09381J, CommunicationSiegfried Eigler
Graphite sulphate is utilized as a precursor to single layers of graphene with an average density of defects of 0.06%.
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On-chip monitoring of chemical syntheses in microdroplets via surface-enhanced Raman spectroscopy

22 January, 2015 - 12:54

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C4CC09595B, CommunicationT.-A. Meier, R. J. Beulig, E. Klinge, M. Fuss, S. Ohla, D. Belder
An approach for inline monitoring of organic syntheses in a microfluidic droplet chip via surface-enhanced Raman spectroscopy is presented. In a proof of concept it was successfully applied to follow thiazole syntheses in real-time.
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Differential reactivity of the inner and outer positions of Au25(SCH2CH2Ph)18 dimeric staples under place exchange conditions

22 January, 2015 - 12:54

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C4CC09252J, CommunicationPaolo Pengo, Cristian Bazzo, Mariangela Boccalon, Lucia Pasquato
The site selectivity of the place exchange reaction at the two inequivalent positions of the neutral Au25(SCH2CH2Ph)18 staples depends on the nature of the incoming thiol.
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Probing post-synthetic metallation in metal-organic frameworks: insights from X-ray crystallography

22 January, 2015 - 12:54

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C4CC09639H, CommunicationWitold M. Bloch, Alexandre Burgun, Christian J. Doonan, Christopher J. Sumby
Post-synthetic metallation is a key route to modifying MOFs but as shown here the choice of solvent affects the extent of reaction and the form of the metallated product.
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Ratiometric fluorescence and mesoporous structure dual signal amplification for sensitive and selective detection of TNT based on MIP@QD fluorescence sensors

22 January, 2015 - 12:54

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C4CC09766A, CommunicationShoufang Xu, Hongzhi Lu
MIP@QD fluorescence sensors combined with ratiometric fluorescence techniques and mesoporous silica materials for highly sensitive detection of TNT.
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Stacking interactions by two Phe side chains stabilize and orient assemblies of even the minimal amphiphilic [small beta]-sheet motif

22 January, 2015 - 12:54

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C4CC09673H, CommunicationZarzhitsky Shlomo, T. P. Vinod, Raz Jelinek, Hanna Rapaport
Here we demonstrate that the smallest possible motif of the amphiphilic and pleated [small beta]-strand structure can be generated using tri-peptides stabilized by [small pi]-[small pi] stacking interactions.
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Regulated protonation of polyaspartamide derivatives bearing repeated aminoethylene side chains for efficient intracellular siRNA delivery with minimal cytotoxicity

22 January, 2015 - 12:54

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C4CC09859E, CommunicationHui Gao, Hiroyasu Takemoto, Qixian Chen, Mitsuru Naito, Hirokuni Uchida, Xueying Liu, Kanjiro Miyata, Kazunori Kataoka
The protonation behavior of aminoethylene units in polyaspartamide side-chains was modulated for improving the delivery efficiency of siRNA-loaded polyion complexes.
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Observation of aliphatic C-HX hydrogen bonds in imidazolium ionic liquids

22 January, 2015 - 12:54

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C4CC09783A, CommunicationAlexander Khrizman, Hiu Yan Cheng, Gualberto Bottini, Guillermo Moyna
Measurement of H/D isotope effects on the 19F resonances of sequentially deuterated 1-n-butyl-3-methylimidazolium hexafluorophosphate and tetrafluoroborate isotopologues reveals the formation of aliphatic C-HX hydrogen bonds between the fluorinated anions and protons along the N-alkyl sidechains of the cations.
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A novel aqueous lithium-oxygen cell based on the oxygen-peroxide redox couple

22 January, 2015 - 12:54

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C4CC09535A, CommunicationMasaki Matsui, Ayumi Wada, Yasuaki Matsuda, Osamu Yamamoto, Yasuo Takeda, Nobuyuki Imanishi
We investigated a highly reversible oxygen-peroxide redox couple on a catalyst-free carbon-based electrode, for aqueous lithium-air battery applications.
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Enantioselective total synthesis of (+)-methoxystemofoline and (+)-isomethoxystemofoline

22 January, 2015 - 12:54

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C4CC09598G, CommunicationPei-Qiang Huang, Su-Yu Huang, Long-Hui Gao, Zhong-Yi Mao, Zong Chang, Ai-E Wang
We report the first enantioselective total synthesis of (+)-methoxystemofoline (2) and (+)-isomethoxystemofoline (3). Through this work, the structure of methoxystemofoline was revised as 2 with an 11E-stereochemistry, and its absolute configuration was established.
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Zinc complexes exhibiting highly efficient thermally activated delayed fluorescence and their application to organic light-emitting diodes

22 January, 2015 - 12:54

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C4CC09403D, CommunicationYumi Sakai, Yuta Sagara, Hiroko Nomura, Nozomi Nakamura, Yoshitake Suzuki, Hiroshi Miyazaki, Chihaya Adachi
Newly synthesized metal complexes emitting thermally activated delayed fluorescence based on intra-ligand charge transfer and enhanced by metallization achieved efficiencies of nearly 20% in vacuum vapor deposited devices.
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Sweat pore mapping using a fluorescein-polymer composite film for fingerprint analysis

22 January, 2015 - 12:54

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C4CC09085C, CommunicationMinkyeong Pyo, Joosub Lee, Woohyun Baek, Chan Woo Lee, Bum Jun Park, Jong-Man Kim
A simple but efficient sweat pore mapping method based on a fluorescein-PVP composite film was developed for fingerprint analysis.
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Transition-metal-free persulfuration to construct unsymmetrical disulfides and mechanistic study of the sulfur redox process

22 January, 2015 - 12:54

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C4CC09633A, CommunicationXiao Xiao, Minghao Feng, Xuefeng Jiang
A sulfur redox process has been developed between sulfinate and thiosulfate, which efficiently affords diverse unsymmetrical disulfides and provides a new method to modify pharmaceuticals and natural products with this biologically active moiety without extra oxidant or reductant.
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Solvent induced single-crystal to single-crystal structural transformation and concomitant transmetalation in a 3D cationic Zn(II)-framework

22 January, 2015 - 12:54

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C4CC09955A, CommunicationSusan Sen, Subhadip Neogi, Kari Rissanen, Parimal K. Bharadwaj
Guest solvent triggered reversible structural transformation and concomitant Zn(II) to Cu(II) transmetalation has been realized through single-crystal to single-crystal fashion in an imidazolium functionalized 3D cationic Zn(II)-framework.
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Advances in the molecular understanding of biological zinc transport

22 January, 2015 - 12:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C4CC10174J, Feature ArticleClaudia Andrea Blindauer
Between 5 and 10% of all proteins of a given organism are estimated to require zinc for function, and hence zinc is essential for almost any given metabolic process. It...
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A new turn on Pd2+-specific fluorescence probe and its use as an Imaging reagent for cellular uptake in Hct116 cells

22 January, 2015 - 12:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C4CC10171E, CommunicationAmitava Das, Upendar Reddy Gandra, Firoj Ali, Nandaraj Taye, Samit Chattopadhyay
A new coumarin-rhodamine conjugate is used as a specific probe for Pd2+ ion and this could even delineate Pd(II) from Pd(0) or Pd(IV) in aqueous buffer medium (pH ~7). Laser...
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SrNb2O6 nanoplates as efficient photocatalysts for the preferential reduction of CO2 in the presence of H2O

22 January, 2015 - 12:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C4CC10241J, CommunicationShunji Xie, Yu Wang, Qinghong Zhang, Weiping Deng, Ye Wang
We successfully synthesized SrNb2O6 with nanoplate morphology by a facile hydrothermal method. The SrNb2O6 nanoplate without any promoters or co-catalysts exhibited promising photocatalytic performance for the preferential reduction of CO2...
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Chemoselective recognition with phosphonate cavitands: the ephedrine over pseudoephedrine case.

22 January, 2015 - 12:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C4CC09387A, CommunicationElisa Biavardi, Franco Ugozzoli, Chiara Massera
Complete discrimination of ephedrine and pseudoephedrine both in solution and in the solid state was achieved with a phosphonate cavitand receptor. The molecular origin of the epimer discrimination was revealed...
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Porous Graphene-based Material as an Efficient Metal Free Catalyst for the Oxidative Dehydrogenation of Ethylbenzene to Styrene

22 January, 2015 - 12:54
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C4CC08683J, CommunicationJiangyong Diao, Hongyang Liu, jia wang, zhenbao Feng, Tong Chen, Changxi Miao, Weimin Yang, Dang Sheng Su
Reduced porous graphene oxide as a metal free catalyst was selected for the oxidative dehydrogenation of ethylbenzene to styrene. It showed the best catalytic performance compared with other carbon materials...
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