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Fuqua, Peter D.; Dunn, Bruce; Zink, Jeffrey I.

doi:10.1023/a:1008602111839

Cited by 43 publications

(34 citation statements)

References 6 publications

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“…Although for both samples the Q-band is specially wide, it is even broader for FOR2 than for MET2, probably indicating a spreading of associate species in FOR2 samples regarding to MET2 composites. This decrease of aggregation degree for samples prepared with methanol/water solution (MET samples) is attributed to the lower protonation of sulfonate groups, responsible of dye solubility [9]. As we have already reported [16], the lower pore size average of MET2 samples (Fig.…”

Section: Discussionsupporting

confidence: 62%

“…With the aim to evaluate the dye aggregation state influence, on the non-linear optical behavior, we have prepared three different silica sono-xerogels [15] following the procedure described elsewhere [16]. As we detail before, we have obtained the called MET samples, adding in this case methanol as solvent [9]. In the second case, the methanol is replaced by formamide [12], used as drying control chemical additive, and the resulting composites have been refereed by code FOR.…”

Section: Methodsmentioning

confidence: 99%

“…Nevertheless, MPc molecules have shown a propensity to selfassociate that is enlarged due to the low solubility of phthalocyanine compounds in the common solvents of the sol-gel process [9]. Molecules aggregation is readily detected on the UV-Visible spectra, particularly in the Q-band region where the coupling between electronic states leads to a blue shift of the maximum absorbance and an overall broadening of the Q-envelope.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Aggregation effects in non-linear absorption of CuPc–SiO2 sono-xerogels

Litrán

Blanco

Ramírez‐del‐Solar

2004

Journal of Non-Crystalline Solids

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Section: Discussionsupporting

confidence: 62%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Aggregation effects in non-linear absorption of CuPc–SiO2 sono-xerogels

Litrán

Blanco

Ramírez‐del‐Solar

2004

Journal of Non-Crystalline Solids

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“…The study of the dimer formation of organic dopants in sol-gel materials has received relatively little attention, despite the fact that monomer-dimer equilibria determine optical and photochemical behavior of the organic dyes. Only dimerization of the rare earth and copper phthalocyanines in sol-gel glasses [5,26] and rhodamine B in dip-coatings have been reported [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic characterization of water-soluble cationic porphyrins in sol–gel silica matrices and coatings

Dargiewicz¹,

Makarska²,

Radzki³

2002

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Silica aeorogels doped with different concentrations of water-soluble cationic porphyrins were synthesised by the sol-gel polymerisation of tetraethylorthosilicate (TEOS). Porphyrin dimer formation in sol-gel matrices was studied in the function of gelation time, over the porphyrin concentration range up to 10 − 5 M. The deviation from the linearity of Beer-Lambert law starts with porphyrin concentration about 5 ×10 − 6 M. The dimerization constants were estimated. The similar dependence could be observed for the aerogels and the solid thin films.

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“…According to related references, the weak shoulder peak was caught by intramolecular electron transition. 27,28 TGA Data. TGA data can be a secondary proof to establish the structure of the phthalocyanine.…”

Section: Resultsmentioning

confidence: 99%

Preparation of poly{styene-co-4-(4-vinylphenoxy) phthalonitrile} nicrospheres by a new approach of “co-dissolution” and its function development

B¹,

Qiu²,

Liu³

et al. 2015

Macromol. Res.

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Solid vinyl monomer with functional group "phthalonitrile" was successfully introduced into microspheres to make poly{styene-co-4-(4-vinylphenoxy) phthalonitrile} microspheres (PSPMs) with uniform (UPSPMs) and core-shell (core-shell PSPMs) structure using soap-free emulsion polymerization by the new approach of "codissolution". The core-shell PSPMs then were used as the design platform to make metallophthalocyanine-containing microspheres. EA, FTIR, SEM, TEM, UV-vis, TGA, XPS, solid 1 H NMR and XRD techniques were employed to analyze the formation and morphology of PSPMs and metallophthalocyanine-containing microspheres. The results showed that UPSPMs and core-shell PSPMs were both realized and they were regular sphericities with diameters of around 370 nm. The percentages of reacting weight of 4-(4-vinylphenoxy) phthalonitrile were close to 50%. Based on the design platform of core-shell PSPMs, metallophthalocyanine-containing microspheres could be obtained and the content of metallophthalocyanine was close to 19%.

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Untitled

Cited by 43 publications

References 6 publications

Aggregation effects in non-linear absorption of CuPc–SiO2 sono-xerogels

Aggregation effects in non-linear absorption of CuPc–SiO2 sono-xerogels

Spectroscopic characterization of water-soluble cationic porphyrins in sol–gel silica matrices and coatings

Preparation of poly{styene-co-4-(4-vinylphenoxy) phthalonitrile} nicrospheres by a new approach of “co-dissolution” and its function development

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