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Showing 1 to 12 of 93 entries
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Energy harvesting efficiency in GaN nanowire-based nanogenerators: the critical influence of the Schottky nanocontact.

Nanoscale

Jamond N, Chrétien P, Gatilova L, Galopin E, Travers L, Harmand JC, Glas F, Houzé F, Gogneau N.
PMID: 28323294
Nanoscale. 2017 Mar 30;9(13):4610-4619. doi: 10.1039/c7nr00647k.

The performances of 1D-nanostructure based nanogenerators are governed by the ability of nanostructures to efficiently convert mechanical deformation into electrical energy, and by the efficiency with which this piezo-generated energy is harvested. In this paper, we highlight the crucial...

Molecular tectonics. Use of the hydrogen bonding of boronic acids to direct supramolecular construction.

Journal of the American Chemical Society

Fournier JH, Maris T, Wuest JD, Guo W, Galoppini E.
PMID: 12537499
J Am Chem Soc. 2003 Jan 29;125(4):1002-6. doi: 10.1021/ja0276772.

Tetraboronic acids 1 and 2 have four -B(OH)(2) groups oriented tetrahedrally by cores derived from tetraphenylmethane and tetraphenylsilane. Crystallization produces isostructural diamondoid networks held together by hydrogen bonding of the -B(OH)(2) groups, in accord with the tendency of simple...

Binding studies of molecular linkers to ZnO and MgZnO nanotip films.

The journal of physical chemistry. B

Taratula O, Galoppini E, Wang D, Chu D, Zhang Z, Chen H, Saraf G, Lu Y.
PMID: 16570948
J Phys Chem B. 2006 Apr 06;110(13):6506-15. doi: 10.1021/jp0570317.

Two bifunctional linkers, a rigid-rod p-ethynyl-isophthalic acid capped with a Ru(II)-polypyridyl complex and 3-mercaptopropionic acid, were covalently bound to ZnO nanotip films grown by metal-organic chemical vapor deposition (MOCVD) technology. This highly vertically aligned, crystalline form of ZnO had...

Hybrid photoactive assemblies: electron injection from host-guest complexes into semiconductor nanoparticles.

Journal of the American Chemical Society

Pagba C, Zordan G, Galoppini E, Piatnitski EL, Hore S, Deshayes K, Piotrowiak P.
PMID: 15303840
J Am Chem Soc. 2004 Aug 18;126(32):9888-9. doi: 10.1021/ja0475252.

Novel ternary assemblies consisting of fully encapsulated host-guest complexes (hemicarceplexes) and wide band gap semiconductor nanoparticles were investigated. The water-soluble amphiphilic host (octacarboxyhemicarcerand) traps the hydrophobic chromophore within its cavity and binds to the surface of metal oxide nanoparticles....

Synthesis of strapped porphyrins: toward isolation of the chromophore on semiconductor surfaces.

The Journal of organic chemistry

Lee CH, Galoppini E.
PMID: 20450154
J Org Chem. 2010 Jun 04;75(11):3692-704. doi: 10.1021/jo100434t.

Strapped porphyrins, designed to bind planar to semiconductor surfaces, were synthesized as model dyes to study the sensitization processes on metal oxide semiconductor nanoparticles surfaces. The strap was added to limit porphyrin-porphyrin stacking and contacts with the semiconductor, while...

Investigation of the electronic transport in GaN nanowires containing GaN/AlN quantum discs.

Nanotechnology

Rigutti L, Jacopin G, Bugallo Ade L, Tchernycheva M, Warde E, Julien FH, Songmuang R, Galopin E, Largeau L, Harmand JC.
PMID: 20864782
Nanotechnology. 2010 Oct 22;21(42):425206. doi: 10.1088/0957-4484/21/42/425206. Epub 2010 Sep 24.

We report the investigation of electronic transport in GaN nanowires containing GaN/AlN quantum discs (QDiscs). The nanowires were grown by plasma-assisted molecular beam epitaxy and contacted by electron-beam lithography. Three nanowire samples containing QDiscs are analyzed and compared to...

Distance dependent electron transfer at TiO2 interfaces sensitized with phenylene ethynylene bridged Ru(II)-isothiocyanate compounds.

Journal of the American Chemical Society

Johansson PG, Kopecky A, Galoppini E, Meyer GJ.
PMID: 23692179
J Am Chem Soc. 2013 Jun 05;135(22):8331-41. doi: 10.1021/ja402193f. Epub 2013 May 21.

Excess electrons present in semiconductor nanocrystallites generate a significant electric field, yet the role this field plays in molecular charge transfer processes remains poorly understood. Three ruthenium bipyridyl cis-Ru(bpy)(LL)(NCS)2 compounds, where LL is a 4-substituted bpy, with zero, one,...

Large second-harmonic generation at 1.55 μmin oxidized AlGaAs waveguides.

Optics letters

Savanier M, Andronico A, Lemaître A, Galopin E, Manquest C, Favero I, Ducci S, Leo G.
PMID: 21808370
Opt Lett. 2011 Aug 01;36(15):2955-7. doi: 10.1364/OL.36.002955.

We report on CW second-harmonic generation in selectively oxidized AlGaAs multilayer waveguides. Frequency doubling of a 1.55 μm pump is observed with 2.8% W(-1) conversion efficiency and a maximum second-harmonic power around 0.3 mW. This is the strongest second-harmonic...

Fluorescence enhancement of di-p-tolyl viologen by complexation in cucurbit[7]uril.

Journal of the American Chemical Society

Freitag M, Gundlach L, Piotrowiak P, Galoppini E.
PMID: 22316113
J Am Chem Soc. 2012 Feb 22;134(7):3358-66. doi: 10.1021/ja206833z. Epub 2012 Feb 09.

A viologen derivative, 1,1'-di-p-tolyl-(4,4'-bipyridine)-1,1'-diium dichloride (DTV(2+)), was studied in solution and encapsulated in cucurbit[7]uril (CB7), a macrocyclic host. Upon encapsulation, DTV(2+) exhibited dramatically enhanced fluorescence. Aqueous solutions of DTV(2+) were weakly fluorescent (Φ = 0.01, τ < 20 ps),...

Correction: Transport mechanisms in a puckered graphene-on-lattice.

Nanoscale

Xu T, Díaz Álvarez A, Wei W, Eschimese D, Brillard C, Eliet S, Lancry O, Galopin E, Vaurette F, Berthe M, Desremes D, Wei B, Xu J, Lampin JF, Pallecchi E, Happy H, Vignaud D, Grandidier B.
PMID: 30912785
Nanoscale. 2019 Apr 04;11(14):7003. doi: 10.1039/c9nr90067e.

Correction for 'Transport mechanisms in a puckered graphene-on-lattice' by T. Xu et al., Nanoscale, 2018, 10, 7519-7525.

Synthesis and Properties of Perylene-Bridge-Anchor Chromophoric Compounds.

The journal of physical chemistry. A

Harmer R, Fan H, Lloyd K, Doble S, Avenoso J, Yan H, Rego LGC, Gundlach L, Galoppini E.
PMID: 32654486
J Phys Chem A. 2020 Aug 06;124(31):6330-6343. doi: 10.1021/acs.jpca.0c04609. Epub 2020 Jul 27.

The quest to control chromophore/semiconductor properties to enable new technologies in energy and information science requires detailed understanding of charge carrier dynamics at the atomistic level, which can often be attained through the use of model systems. Perylene-bridge-anchor compounds...

ROSE-X: an annotated data set for evaluation of 3D plant organ segmentation methods.

Plant methods

Dutagaci H, Rasti P, Galopin G, Rousseau D.
PMID: 32158494
Plant Methods. 2020 Mar 04;16:28. doi: 10.1186/s13007-020-00573-w. eCollection 2020.

BACKGROUND: The production and availability of annotated data sets are indispensable for training and evaluation of automatic phenotyping methods. The need for complete 3D models of real plants with organ-level labeling is even more pronounced due to the advances...

Showing 1 to 12 of 93 entries