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Showing 13 to 24 of 377 entries
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First comparative emission assay of single-wall carbon nanotubes--solutions and dispersions.

Chemical communications (Cambridge, England)

Guldi DM, Holzinger M, Hirsch A, Georgakilas V, Prato M.
PMID: 12778701
Chem Commun (Camb). 2003 May 21;(10):1130-1. doi: 10.1039/b301422c.

A variety of single-wall carbon nanotube samples were tested in steady-state and time-resolved emission experiments, where it was found that chemical functionalization and different degrees of oxidation affect the emission behavior.

Subphthalocyanines: tuneable molecular scaffolds for intramolecular electron and energy transfer processes.

Journal of the American Chemical Society

González-Rodríguez D, Torres T, Guldi DM, Rivera J, Herranz MA, Echegoyen L.
PMID: 15149228
J Am Chem Soc. 2004 May 26;126(20):6301-13. doi: 10.1021/ja039883v.

A series of four subphthalocyanine-C(60) fullerene dyads have been prepared through axial functionalization of the macrocycle with m-hydroxybenzaldehyde and a subsequent dipolar cycloaddition reaction. The subphthalocyanine moiety has been peripherally functionalized with substituents of different electronic character, namely fluorine...

Molecular satellite dishes: attaching parabolic and planar arenes to heterofullerenes.

Chemical communications (Cambridge, England)

Hauke F, Atalick S, Guldi DM, Mack J, Scott LT, Hirsch A.
PMID: 15045053
Chem Commun (Camb). 2004 Apr 07;(7):766-7. doi: 10.1039/b316139k. Epub 2004 Feb 23.

The electrophilic attack of C(59)N(+) on arenes such as pyrene, coronene and corannulene leads to the regioselective formation of fullerene conjugates, in which polycyclic aromatics are connected to the spherical heterofullerene by a single sigma-bond.

Synthesis and photophysical investigation of new porphyrin derivatives with beta-pyrrole ethynyl linkage and corresponding dyad with [60] fullerene.

The journal of physical chemistry. A

Lembo A, Tagliatesta P, Guldi DM.
PMID: 17020252
J Phys Chem A. 2006 Oct 12;110(40):11424-34. doi: 10.1021/jp062735h.

Two new beta-substituted arylethynyl meso-tetraphenylporphyrins, 2-[(4'-formyl)phenyl]ethynyl-5,10,15,20-tetraphenylporphyrin (system A) and 2-[(4'-methyl)phenyl]ethynyl-5,10,15,20-tetraphenylporphyrin (system B) and their zinc derivatives were synthesized by palladium catalysis, using a synthetic approach that affords high yields of the target systems. Comparative ultraviolet-visible (UV-vis), NMR, and cyclic...

A tightly coupled bis(zinc(II) phthalocyanine)-perylenediimide ensemble to yield long-lived radical ion pair states.

Organic letters

Jiménez AJ, Spänig F, Rodríguez-Morgade MS, Ohkubo K, Fukuzumi S, Guldi DM, Torres T.
PMID: 17542596
Org Lett. 2007 Jun 21;9(13):2481-4. doi: 10.1021/ol0707968. Epub 2007 Jun 02.

A conjugated donor-acceptor array composed of two phthalocyanines connected to the bay region of a perylenediimide is assembled by using palladium chemistry. Excitation of the phthalocyanine produces a nanosecond lived charge-separated state.

Hydrogen bonding interfaces in fullerene*TTF ensembles.

Journal of the American Chemical Society

Segura M, Sánchez L, de Mendoza J, Martín N, Guldi DM.
PMID: 14653744
J Am Chem Soc. 2003 Dec 10;125(49):15093-100. doi: 10.1021/ja036358n.

Novel thermodynamically stable supramolecular donor-acceptor dyads have been synthesized. In particular, we assembled successfully C(60), as an electron acceptor, with the strong electron donor TTF through a complementary guanidinium-carboxylate ion pair. Two strong and well-oriented hydrogen bonds, in combination...

Control over electron transfer in tetrathiafulvalene-modified single-walled carbon nanotubes.

Angewandte Chemie (International ed. in English)

Herranz MA, Martín N, Campidelli S, Prato M, Brehm G, Guldi DM.
PMID: 16767783
Angew Chem Int Ed Engl. 2006 Jul 03;45(27):4478-82. doi: 10.1002/anie.200504354.

No abstract available.

[60]fullerene-stoppered porphyrinorotaxanes: pronounced elongation of charge-separated-state lifetimes.

Journal of the American Chemical Society

Li K, Bracher PJ, Guldi DM, Herranz MA, Echegoyen L, Schuster DI.
PMID: 15281785
J Am Chem Soc. 2004 Aug 04;126(30):9156-7. doi: 10.1021/ja047548g.

A series of Sauvage-type porphyrinorotaxanes containing [60]fullerene stoppers have been synthesized by a convergent route. Photoinduced energy transfer and electron-transfer reactions in these rotaxanes yield long-distance charge-separated radical-pair states, whose lifetimes in solution at ambient temperatures are as high...

Analysis of the chicken retina with an adaptive optics multiphoton microscope.

Biomedical optics express

Bueno JM, Giakoumaki A, Gualda EJ, Schaeffel F, Artal P.
PMID: 21698025
Biomed Opt Express. 2011 Jun 01;2(6):1637-48. doi: 10.1364/BOE.2.001637. Epub 2011 May 19.

The structure and organization of the chicken retina has been investigated with an adaptive optics multiphoton imaging microscope in a backward configuration. Non-stained flat-mounted retinal tissues were imaged at different depths, from the retinal nerve fiber layer to the...

Nonlinear imaging microscopy techniques as diagnostic tools for art conservation studies.

Optics letters

Filippidis G, Gualda EJ, Melessanaki K, Fotakis C.
PMID: 18246141
Opt Lett. 2008 Feb 01;33(3):240-2. doi: 10.1364/ol.33.000240.

We present results of the implementation of three-photon excitation fluorescence (3PEF) and third harmonic generation imaging measurements for the precise and nondestructive detection of natural and synthetic varnish layers, which are used for the surface protection of painted artifacts....

Energy transfer in oligofluorene-C60 and C60-oligofluorene-C60 donor-acceptor conjugates.

The Journal of organic chemistry

van der Pol C, Bryce MR, Wielopolski M, Atienza-Castellanos C, Guldi DM, Filippone S, Martín N.
PMID: 17691735
J Org Chem. 2007 Aug 31;72(18):6662-71. doi: 10.1021/jo070686e. Epub 2007 Aug 10.

Two complementary series of C(60)-(Fl)(n) and C(60)-(Fl)(n)-C60 (Fl = 9,9-dihexylfluorene-2,7-diyl; n = 1-5) derivatives with terminal N-methylfulleropyrrolidine units have been synthesized from CHO-(Fl)(n) and CHO-(Fl)(n)-CHO precursors via 1,3-dipolar cycloaddition reaction of in situ generated azomethine ylides with an excess...

Synthesis, characterization, and photoinduced electron transfer processes of orthogonal ruthenium phthalocyanine-fullerene assemblies.

Journal of the American Chemical Society

Rodríguez-Morgade MS, Plonska-Brzezinska ME, Athans AJ, Carbonell E, de Miguel G, Guldi DM, Echegoyen L, Torres T.
PMID: 19722625
J Am Chem Soc. 2009 Aug 05;131(30):10484-96. doi: 10.1021/ja902471w.

The convergent synthesis, electrochemical characterization, and photophysical studies of phthalocyanine-fullerene hybrids 3-5 bearing an orthogonal geometry (Chart ) are reported. These donor-acceptor arrays have been assembled through metal coordination of linear fullerene mono- and bispyridyl ligands to ruthenium(II) phthalocyanines....

Showing 13 to 24 of 377 entries