2000
DOI: 10.1039/a908259j
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A water soluble methanofullerene derivative: synthesis, micellar aggregation in aqueous solutions, and incorporation in sol–gel glasses for optical limiting applications

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Cited by 43 publications
(54 citation statements)
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“…6). 28 Successful inclusion of compound 11 in the sol-gel could effectively be achieved during the gelation process. A saturated solution of 11 in a 1 : 1 mixture of water and THF containing a small amount of ammonia was mixed quickly to the sol-gel preparation in the casting boxes.…”
Section: Derivatives For Optical Limiting Applicationsmentioning
confidence: 99%
See 1 more Smart Citation
“…6). 28 Successful inclusion of compound 11 in the sol-gel could effectively be achieved during the gelation process. A saturated solution of 11 in a 1 : 1 mixture of water and THF containing a small amount of ammonia was mixed quickly to the sol-gel preparation in the casting boxes.…”
Section: Derivatives For Optical Limiting Applicationsmentioning
confidence: 99%
“…The latter observations have been mainly explained by two factors: (i) perturbation of the molecular energy levels due to the interactions with the sol-gel matrix and (ii) interactions between neighboring fullerene spheres due to aggregation. 22,28 In order to prevent such undesirable effects, we have prepared fullerodendrimers 12-13 (Chart 4) in which the C 60 core is buried in the middle of a dendritic structure. [29][30][31][32][33] The incorporation of fullerodendrimers 12-13 in sol-gel glasses has been easily achieved by soaking mesoporous silica glasses with a solution of 12-13.…”
Section: Derivatives For Optical Limiting Applicationsmentioning
confidence: 99%
“…Effectively, the intensity dependant absorption of fullerenes originates from larger absorption cross sections of excited states compared to that of the ground state [26], therefore the increased triplet lifetime observed for the largest fullerodendrimers may allow for an effective limitation on a longer time scale. For practical applications, the use of solid devices is largely preferred to solutions and inclusion of fullerene derivatives in solgel glasses has shown interesting perspectives [27]. However, faster de-excitation dynamics and reduced triplet yields are typically observed for fullerenedoped sol-gel glasses when compared to solutions [28].…”
Section: A Fullerene Core To Probe Dendritic Shielding Effectsmentioning
confidence: 99%
“…A transmissão da amostra a 532 nm mostrou que, com o aumento da energia do pulso do laser incidente, a transmissão diminuiu, o que demonstra que as propriedades de limitação após inclusão na matriz sólida foram mantidas. 103 Vidros sol-gel estáveis também têm sido preparados a partir de derivados de fulerenos modificados com cadeias solubilizantes contendo grupos siloxanos. 104 As propriedades ópticas limitantes destes derivados têm sido investigadas em solução e em vidros sol-gel.…”
Section: Derivados De C 60 Como Limitadores óPticosunclassified