Enhanced optical limiting in derivatized fullerenes

Smilowitz, Laura; McBranch, D.; Klimov, Victor I.; Robinson, Jeanne M.; Koskelo, Aaron C.; Grigorova, M.; Mattes, Benjamin R.; Wang, H.; Wudl, Fred

doi:10.1364/ol.21.000922

Cited by 77 publications

(32 citation statements)

References 12 publications

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“…19,22,24 However, the nonlinear absorptive properties of the C 60 derivatives as measured by optical limiting responses toward a nanosecond pulsed laser at 532 nm are only marginally different from those of the parent C 60 in room-temperature solutions. 6,[25][26][27] The derivatization of fullerene cages has been extended to the preparation of fullerene-containing polymers. 3,28-34 Of particular interest are polyfullerenes, which are all-carbon polymers of covalently linked fullerene cages.…”

Section: Introductionmentioning

confidence: 99%

Photophysical and Nonlinear Absorptive Optical Limiting Properties of [60]Fullerene Dimer and Poly[60]fullerene Polymer

Riggs

Sun

1998

J. Phys. Chem. B

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A systematic study of the photophysical properties and nonlinear absorptive optical limiting responses of the [60]fullerene dimer (C 60 dimer) and poly[60]fullerene (poly-C 60 ) polymer in room-temperature solutions is reported. The results are compared with those of C 60 and representative C 60 derivatives. While the absorption, fluorescence (spectrum, quantum yield, lifetime), and photoinduced electron-transfer properties of the C 60 dimer are somewhat different from those of C 60 , they are qualitatively similar to those of other C 60 derivatives. The triplet-triplet absorption of the C 60 dimer is noticeably weaker than those of C 60 and other C 60 derivatives, corresponding to lower optical limiting responses of the C 60 dimer at 532 nm. However, the photophysical and nonlinear absorptive optical limiting properties of the poly-C 60 polymer are significantly different. The polymer solution shows much weaker fluorescence, barely detectable triplet-state absorption, and marginal optical limiting response. The different excited-state and nonlinear optical properties of the poly-C 60 polymer are explained in terms of new excited singlet-state decay pathways in the polymer that are not available in monomeric and dimeric C 60 molecules. In addition, the issue concerning significant excited-state fullerene cage-cage interactions in the C 60 dimer and poly-C 60 polymer is discussed.

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Section: Introductionmentioning

confidence: 99%

Photophysical and Nonlinear Absorptive Optical Limiting Properties of [60]Fullerene Dimer and Poly[60]fullerene Polymer

Riggs

Sun

1998

J. Phys. Chem. B

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“…[13,32] Incorporation of the fullerene derivatives 1 ± 5 in sol ± gel glasses: Silica sols were prepared from tetraethoxysilane (TEOS) and methyltriethoxysilane (MTES) as silica precursors. Monoliths were obtained with a sol modified by partial or total substitution of TEOS with MTES.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Optical-Limiting Behavior of Hybrid Inorganic-Organic Materials from the Sol-Gel Processing of Organofullerenes

Maggini¹,

Faveri²,

Scorrano³

et al. 1999

Chem. Eur. J.

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The optical-limiting properties of a series of novel [60]fullerene derivatives have been investigated in toluene solutions and in sol ± gel glasses. Working at different wavelengths, it is found that the efficiency of the new compounds compares well with that of pristine C 60 . In particular, better performance of the organofullerenes is obtained when the pumping wavelength approaches the triplet ± triplet absorption maximum of the derivatives at % 700 nm. The main component in the optical-limiting behavior is, in fact, ascribed to a reverse saturable absorption mechanism. A relevant feature in the structure of the new organofullerenes is that a silicon-alkoxide moiety is covalently attached to C 60 . This guarantees the grafting of the fullerene spheroid to the silicon matrix during the sol ± gel process. Some of the derivatives show remarkable solubility in THF, a solvent widely used in sol ± gel processing, in which C 60 is itself insoluble.

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“…This enhanced linear absorption in the near IR allows OL to be initiated at longer wavelengths, making the OL more broadband than for neat C60. 3 We present TA spectra for these functionalized fullerenes which demonstrate that the essential dynamics are similar to those of C60, but with a broadening of the singlet and triplet states. The predicted aT/us for various 6,6…”

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confidence: 82%

Ultrafast and nonlinear optical characterization of optical limiting processes in fullerenes

et al. 1997

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Enhanced optical limiting in derivatized fullerenes

Cited by 77 publications

References 12 publications

Photophysical and Nonlinear Absorptive Optical Limiting Properties of [60]Fullerene Dimer and Poly[60]fullerene Polymer

Photophysical and Nonlinear Absorptive Optical Limiting Properties of [60]Fullerene Dimer and Poly[60]fullerene Polymer

Synthesis and Optical-Limiting Behavior of Hybrid Inorganic-Organic Materials from the Sol-Gel Processing of Organofullerenes

Ultrafast and nonlinear optical characterization of optical limiting processes in fullerenes

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