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Showing 1 to 12 of 30881 entries
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Facile preparation of oriented nanoporous silica films from solvent-free liquid-crystalline mixtures.

Chemical communications (Cambridge, England)

Mizoshita N, Tani T, Inagaki S.
PMID: 23023655
Chem Commun (Camb). 2012 Nov 11;48(87):10772-4. doi: 10.1039/c2cc36306b.

Mixtures of an amphiphilic perylene bisimide derivative and tetramethoxysilane in the absence of solvents have been found to exhibit stable columnar liquid-crystalline phases which transform into macroscopically oriented nanoporous silica films as a result of simple mechanical shearing.

Thiazole as a weak electron-donor unit to lower the frontier orbital energy levels of donor-acceptor alternating conjugated materials.

Chemical communications (Cambridge, England)

Zaborova E, Chávez P, Bechara R, Lévêque P, Heiser T, Méry S, Leclerc N.
PMID: 24036612
Chem Commun (Camb). 2013 Nov 04;49(85):9938-40. doi: 10.1039/c3cc45481a.

We demonstrate that the substitution of the thiophene by the thiazole heterocyclic compound as a weak electron-donor unit, in donor-acceptor alternating conjugated materials, allows a simultaneous downshift of both HOMO and LUMO levels while keeping the energy bandgap almost...

Unprecedented stacking of MV2+ dications and MV˙+ radical cations in the mixed-valence viologen salt (MV)2(BF4)3 (MV = methylviologen).

Chemical communications (Cambridge, England)

Leblanc N, Mercier N, Toma O, Kassiba AH, Zorina L, Auban-Senzier P, Pasquier C.
PMID: 24067860
Chem Commun (Camb). 2013 Nov 11;49(87):10272-4. doi: 10.1039/c3cc45690k.

Using a slow liquid-gas diffusion method, the mixed-valence viologen salt (MV)2(BF4)3 (1) and the radical cation salt (MV)(BF4) (2) are crystallized. Both structures contain regular stacks of MV˙(+) radical cations (2) or alternating MV˙(+) and MV(2+) entities (1). A...

First practical cross-alkylation of primary alcohols with a new and recyclable impregnated iridium on magnetite catalyst.

Chemical communications (Cambridge, England)

Cano R, Yus M, Ramón DJ.
PMID: 22732869
Chem Commun (Camb). 2012 Aug 07;48(61):7628-30. doi: 10.1039/c2cc33101b. Epub 2012 Jun 26.

A new impregnated iridium on magnetite catalyst has been prepared, characterized, used and recycled, up to ten times with practically the same activity, for the first practical cross-alkylation of primary alcohols. The catalyst showed a wide reaction scope, is...

Ionic-passivated FeS2 photocapacitors for energy conversion and storage.

Chemical communications (Cambridge, England)

Gong M, Kirkeminde A, Kumar N, Zhao H, Ren S.
PMID: 23995298
Chem Commun (Camb). 2013 Oct 18;49(81):9260-2. doi: 10.1039/c3cc45088k.

A solid-state photocapacitor is prepared, utilizing iron pyrite (FeS2) as both the photoactive material and blocking electrode, which exhibits a high performance near-infrared (NIR) photodetectivity of 1.6 × 10(11) Jones, an energy density of 1.13 × 10(4) J g(-1)...

Electronic communication through molecular bridges.

Chemical communications (Cambridge, England)

Herrmann C, Elmisz J.
PMID: 23995380
Chem Commun (Camb). 2013 Nov 18;49(89):10456-8. doi: 10.1039/c3cc45125a.

A concept that plays an important role in chemistry in general and in molecular spintronics in particular is electronic communication through molecular bridges. An improved understanding of this concept may help to transfer knowledge between different areas of chemistry...

J-aggregation induced low bandgap anthracene-based conjugated molecule for solution-processed solar cells.

Chemical communications (Cambridge, England)

Shin J, Kang NS, Kim KH, Lee TW, Jin JI, Kim M, Lee K, Ju BK, Hong JM, Choi DH.
PMID: 22801585
Chem Commun (Camb). 2012 Sep 04;48(68):8490-2. doi: 10.1039/c2cc34109c. Epub 2012 Jul 17.

A new anthracene-based X-shaped conjugated molecule, HBTATHT, was synthesized. Thin film transistors based on unannealed HBTATHT showed a carrier mobility of 0.15 cm(2) V(-1) s(-1) (I(on/off) = 7.9 × 10(6)). Further, a solution processed solar cell made of HBTATHT...

Iridium phosphors with peripheral triphenylamine encapsulation: highly efficient solution-processed red electrophosphorescence.

Chemical communications (Cambridge, England)

Zhu M, Li Y, Hu S, Li C, Yang C, Wu H, Qin J, Cao Y.
PMID: 22306807
Chem Commun (Camb). 2012 Mar 11;48(21):2695-7. doi: 10.1039/c2cc17515k. Epub 2012 Feb 03.

The peripheral triphenylamine-encapsulated red-emitting iridium(III) complexes have been designed and synthesized. External quantum efficiency over 15% has been realized in single-layer polymer light-emitting diodes, which is the highest ever reported for solution-processed red phosphorescence.

Ordered mesoporous materials as solid supports for rhodium-diphosphine catalysts with remarkable hydroformylation activity.

Chemical communications (Cambridge, England)

Marras F, Wang J, Coppens MO, Reek JN.
PMID: 20697633
Chem Commun (Camb). 2010 Sep 21;46(35):6587-9. doi: 10.1039/c0cc00924e. Epub 2010 Aug 09.

A rhodium-diphosphine complex based on Xantphos-type ligands was anchored on mesoporous silica SBA-15, and the material showed remarkably high catalytic activity in the hydroformylation of 1-octene, even exceeding its homogeneous analogue under certain conditions.

Controlled synthesis of nanocrystalline Li2MnSiO4 particles for high capacity cathode application in lithium-ion batteries.

Chemical communications (Cambridge, England)

Kempaiah DM, Rangappa D, Honma I.
PMID: 22307175
Chem Commun (Camb). 2012 Mar 11;48(21):2698-700. doi: 10.1039/c2cc17234h. Epub 2012 Feb 03.

Monodispersed Li(2)MnSiO(4) nanoparticles are synthesized via a supercritical solvothermal method at 300 °C for 5 min reaction time. The as-synthesized nanoparticles are free from impurities and have 15-20 nm diameter. After coating with conductive polymer, a discharge capacity of...

Incorporation of active metal sites in MOFs via in situ generated ligand deficient metal-linker complexes.

Chemical communications (Cambridge, England)

Barman S, Furukawa H, Blacque O, Venkatesan K, Yaghi OM, Jin GX, Berke H.
PMID: 21983899
Chem Commun (Camb). 2011 Nov 21;47(43):11882-4. doi: 10.1039/c1cc14387e. Epub 2011 Oct 10.

Two novel 3D MOFs, namely MOF-647A and MOF-648 (previously unknown trinodal 4-connected net), comprised of Cu ions and pyrazole-3,5-dicarboxylate were synthesized and characterized. A strategy for incorporating open metal sites in MOFs was investigated by utilizing an in situ...

Activation of [(99(m))TcO4](-) by phosphonium cations.

Chemical communications (Cambridge, England)

Braband H, Benz M, Tooyama Y, Alberto R.
PMID: 24622855
Chem Commun (Camb). 2014 Apr 21;50(31):4126-9. doi: 10.1039/c4cc00718b.

Phosphonium salts in solution or bound to solid phase supports interact with the robust [(99(m))TcO4](-) anion in neutral water. This activated form of [(99(m))TcO4](-) represents a source for complexes with the fac-{(99m)Tc(VII)O3}(+) core, which can be synthesized in high...

Showing 1 to 12 of 30881 entries