Nonlinear Optical Properties of Coordination and Organometallic Complexes

Humphrey, Mark G.; Schwich, Torsten; West, Patrick J.; Cifuentes, Marie P.; Samoć, Marek

doi:10.1016/b978-0-08-097774-4.00810-x

Cited by 24 publications

(12 citation statements)

References 572 publications

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“…[18][19][20][21][22][23][24][25] Intracluster metal-metal and metal-sulfur bond distances are consistent with those for an oxidation state of +4 for the metal, and the presence of single metal-metal bonds (see Table 1). [18][19][20][21][22][23][24][25] In addition to the crystal structure determinations, the identities of complexes (Bu 4 N)- [1][2][3][4] were confirmed by mass spectrometry.…”

Section: Resultsmentioning

confidence: 99%

“…A large number of coordination and organometallic molecular complexes that may be useful as NLO materials in photonics have also been reported. 2 Less attention has been devoted to inorganic clusters. This is mainly due to two reasons: on the one hand, their (usually) deep color makes them unsuitable for NLO applications necessitating transparency in the visible region, and on the other hand, their frequent instability in the presence of high intensity radiation prohibits applications involving lasers.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and optical power limiting properties of heteroleptic Mo₃S₇ clusters

et al. 2015

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Substitution of the halide ligands in (Bu4N)2[Mo3S7X6] (X = Cl, Br) by diimine ligands, such as 4,4'-dimethyl-2,2'-bipyridine (dmbpy), 2,2'-bipyridine (bpy) and 1,10-phenanthroline (phen), affords the neutral heteroleptic clusters Mo3S7Cl4(dmbpy) (1), Mo3S7Br4(dmbpy) (2), Mo3S7Br4(bpy) (3), and Mo3S7Br4(phen) (4). Further substitution of the halide ligands in Mo3S7Br4(diimine) clusters by dmit (1,3-dithiole-2-thione-4,5-dithiolate) allows the preparation of the mixed diimine-dithiolene neutral cluster complexes Mo3S7(dnbpy)(dmit)2 (5, dnbpy = 4,4'-dinonyl-2,2'-bipyridine), Mo3S7(dcmbpy)(dmit)2 (6, dcmbpy = 4,4′-dimethoxycarbonyl-2,2′-bipyridine), and Mo3S7(dcbpy)(dmit)2 (7, dcbpy = 2,2'-bipyridine-4,4'-dicarboxylic acid). The optical limiting properties of complexes 1 -7 have been assessed by the open-aperture Z-scan technique at 570 nm, employing a nanosecond optical parametric oscillator. In order to investigate the effect of increasing the -system, complexes 1 -4, with general formula Mo3S7X4(diimine), (X = Cl, Br), were compared to clusters 5 -7, containing the dmit ligand. The influence of the metal content on the optical power limiting properties was also investigated by comparing the trinuclear series of complexes prepared herein with the bis(dithiolene) dinuclear cluster (Et4N)2[Mo2O2S2(BPyDTS2)2], which has been recently prepared by our group. All trinuclear clusters 1 -7 are efficient optical limiters (eff > 0) with threshold limiting fluence F15% decreasing on proceeding from dinuclear to trinuclear clusters and, generally, on extending the -system.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and optical power limiting properties of heteroleptic Mo₃S₇ clusters

et al. 2015

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“…[30] Linear optical spectra are displayed in Figure 9 and significant spectroscopic data are listed in Table 4. All the studies summarized below were undertaken in DMF.…”

Section: Optical Limiting Propertiesmentioning

confidence: 99%

Binuclear Sulfide Niobium Clusters Coordinated by Diimine Ligands: Synthesis, Structure, Photocatalytic Activity and Optical Limiting Properties

et al. 2015

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Registro de acceso restringido Este recurso no está disponible en acceso abierto por política de la editorial. No obstante, se puede acceder al texto completo desde la Universitat Jaume I o si el usuario cuenta con suscripción. Registre d'accés restringit Aquest recurs no està disponible en accés obert per política de l'editorial. No obstant això, es pot accedir al text complet des de la Universitat Jaume I o si l'usuari compta amb subscripció. Restricted access item This item isn't open access because of publisher's policy. The full--text version is only available from Jaume I University or if the user has a running suscription to the publisher's contents.

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“…99 The PS Ru (Figure 1a) was selected in this study due to its impressive photophysical/biological properties including the ability to eradicate, in vivo, a multi-resistant cancer tumor. 98,[100][101] Overall, the concept of our work is based on dual tumor selectivity: 1) the polymer carrier can target tumor tissue due to the enhanced permeability and retention (EPR) effect [102][103] ; 2) biotin as a member of the vitamin B family is majorly taken up by cells through the sodium multivitamin transporter (SMVT). As this receptor is overexpressed in a variety of cancers, and since there is a high demand for biotin in rapidly growing cells, the encapsulation in a biotincontaining polymer can provide an additional cancer cell targeting effect.…”

Section: Introductionmentioning

confidence: 99%

Polymeric Encapsulation of a Ruthenium Polypyridine Complex for Tumor Targeted 1- and 2-Photon Photodynamic Therapy

Karges¹,

Li²,

Zeng³

et al. 2020

Preprint

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Photodynamic therapy is a medical technique, which is gaining increasing attention to treat various types of cancer. Among the investigated classes of photosensitizers, the use of Ru(II) polypyridine complexes is gaining momentum. However, the currently investigated compounds generally show poor cancer cell selectivity. As a consequence, high drug doses are needed, which can cause side effects. To overcome this limitation, there is a need for the development of a suitable drug delivery system to increase the amount of PS delivered to the tumor. Herein, we report on the encapsulation of a promising Ru(II) polypyridyl complex into polymeric nanoparticles with terminal biotin groups. Thanks to this design, the particles showed much higher selectivity for cancer cells in comparison to non-cancerous cells in a 2D monolayer and 3D multicellular tumor spheroid model. As a highlight, upon intravenous injection of an identical amount of the Ru(II) polypyridine complex, an improved accumulation inside an adenocarcinomic human alveolar basal epithelial tumor of a mouse by a factor of 8.7 compared to the Ru complex itself was determined. The nanoparticles were found to have a high phototoxic effect upon 1-photon (500 nm) or 2-photon (800 nm) excitation with an eradication of an adenocarcinomic human alveolar basal epithelial tumor inside a mouse. Overall, this work describes, to the best of our knowledge, the first <i>in vivo</i> study demonstrating the cancer cell selectivity of a very promising Ru(II)-based PDT photosensitizer encapsulated into polymeric nanoparticles with terminal biotin groups.

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Nonlinear Optical Properties of Coordination and Organometallic Complexes

Cited by 24 publications

References 572 publications

Synthesis and optical power limiting properties of heteroleptic Mo₃S₇ clusters

Synthesis and optical power limiting properties of heteroleptic Mo₃S₇ clusters

Binuclear Sulfide Niobium Clusters Coordinated by Diimine Ligands: Synthesis, Structure, Photocatalytic Activity and Optical Limiting Properties

Polymeric Encapsulation of a Ruthenium Polypyridine Complex for Tumor Targeted 1- and 2-Photon Photodynamic Therapy

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Nonlinear Optical Properties of Coordination and Organometallic Complexes

Cited by 24 publications

References 572 publications

Synthesis and optical power limiting properties of heteroleptic Mo3S7 clusters

Synthesis and optical power limiting properties of heteroleptic Mo3S7 clusters

Binuclear Sulfide Niobium Clusters Coordinated by Diimine Ligands: Synthesis, Structure, Photocatalytic Activity and Optical Limiting Properties

Polymeric Encapsulation of a Ruthenium Polypyridine Complex for Tumor Targeted 1- and 2-Photon Photodynamic Therapy

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Synthesis and optical power limiting properties of heteroleptic Mo₃S₇ clusters

Synthesis and optical power limiting properties of heteroleptic Mo₃S₇ clusters