Octadecyl ethers of 5,10,15,20-tetra(4-hydroxyphenyl)porphyrin: synthesis and film-forming properties

Bonnett, Raymond; Ioannou, Stella; James, Andrew; Pitt, Christopher; Soe, Moe M. Z.

doi:10.1039/jm9920200823

Cited by 11 publications

(3 citation statements)

References 8 publications

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“…Since metalloporphyrins often play crucial roles in making functional materials and also as models for some biochemical processes, much effort has been concentrated on the construction of thin metalloporphyrin films [1][2][3][4][5][6][7][8][9][10]. The fabrication of the thin metalloporphyrin films has usually been achieved with the Langmuir-Blodgett (LB) and self-assembly techniques.…”

Section: Introductionmentioning

confidence: 99%

Effects of a central metal on the organization of 5,10,15,20-tetra-(p-chlorophenyl)–rare earth porphyrin hydroxyl compound at the air/water interface and in Langmuir–Blodgett films

Itoh

et al. 2005

Journal of Colloid and Interface Science

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Section: Introductionmentioning

confidence: 99%

Effects of a central metal on the organization of 5,10,15,20-tetra-(p-chlorophenyl)–rare earth porphyrin hydroxyl compound at the air/water interface and in Langmuir–Blodgett films

Itoh

et al. 2005

Journal of Colloid and Interface Science

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“…However, this technique is limited to volatile, thermally durable materials. The Langmuir-Blodgett (LB) method is another useful technique but is generally restricted to amphiphiles that are able to form stable monolayers on a liquid surface. − However, (triazol)hemiporphyrazine multilayer films exhibiting a high degree of molecular organization by the LB method have been prepared recently, in spite of the fact that (triazol)hemiporphyrazine does not belong to the class of molecules for which the LB method is most suited. Films of porphyrins have also been prepared by dip-coating, spin-coating, and electro-polymerization 16,27,28 methods.…”

mentioning

confidence: 99%

Layer-by-Layer Growth of Electrostatically Assembled Multilayer Porphyrin Films

1996

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The feasibility of preparing multilayer porphyrin films with monolayer control of composition and thickness is demonstrated. Successive dip-coating of tetraruthenated zinc porphyrin, [ZnTPyPBpy]4+, and meso-tetraphenylporphyrin sulfonate, [M-TPPS]4-, is shown to result in linear growth of the film thickness (12.7(6) Å/bilayer) and optical absorbance as a function of the number of bilayers. These results strongly suggest a layer-by-layer assembly of compositionally homogeneous films of up to 30 bilayers. The assembled multilayer composite films have been characterized by UV−vis spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, atomic force microscopy, and electrochemical methods. Electrodes modified with these films exhibit a reversible wave at 0.94 V and are photocatalytically active toward the reduction of O2. Our findings suggest that the layer-by-layer growth method may be a general route to compositionally modulated porphyrin films of arbitrary thickness and rationally tailored catalytic and photophysical properties.

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“…A preparação de filmes moleculares é um aspecto importante também no desenvolvimento de dispositivos supramoleculares e as técnicas mais conhecidas para a preparação de filmes são: a) A termoevaporação [119,120], bastante apropriada para obtenção de filmes homogêneos, porém, limitada a materias voláteis e termicamente resistentes. b) O método de Langmuir-Blodgett (LB), uma técnica muito útil, mas geralmente restrita a sistemas anfifílicos capazes de formarem monocamadas estáveis em uma superfície líquida [121][122][123] e c) Filmes preparados por técnicas de dip-coating, spin-coating [124] e eletropolimerização [125,126], este último caso restrito a espécies dotadas de grupos funcionais capazes de habilitar o processo de eletropolimerização, conforme observado no exemplo da referência [127].…”

Section: Pares Iônicos Supramolecularesunclassified

Química supramolecular de tetrapiridilporfirinas associadas a complexos de platina(II)

Naue¹

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Ao CNPq, pela bolsa de doutorado. Aos membros da banca por terem prestigiado este trabalho participando da defesa e pelas críticas enriquecedoras. Ao Prof. Marcos Eberlin e a Dra. Daniela Tomazela, do Instituto de Química da Unicamp, pela medida dos espectros de massa. À Miriam Uemi, da central analítica do IQ, pela colaboração com os espectros de RMN de platina. Aos amigos Juliano e Sérgio pela grande força que me deram na reta final deste trabalho e pela colaboração com os dados de SPR. Formiga e Marcelo pela colaboração com os dados de modelagem molecular e microscopia. Ronaldo, pelas conversas sempre ricas em informação e pela revisão do texto. Genebaldo pelo incentivo. A todos vocês agradeço principalmente pela grande amizade e companheirismo. À Aninha pelo convívio nestes anos de laboratório e pelo suporte prestado no nosso dia-a-dia de experimentos. Ao Prof. Koiti e a todos os colegas de diferentes gerações do LQSN como Herbert, Ildemar e Fauze, com quem tive o prazer de conviver e muito aprender nesses últimos anos. Aos amigos de sempre Paulo Lima, Adriano Oliveira e tantos outros que eu poderia citar, mas que apenas me limito para não me estender demais, pela amizade e incentivo. Finalmente, a todos aqueles que de alguma forma contribuíram para que esta tese se tornasse realidade, meu profundo agradecimento.

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Octadecyl ethers of 5,10,15,20-tetra(4-hydroxyphenyl)porphyrin: synthesis and film-forming properties

Cited by 11 publications

References 8 publications

Effects of a central metal on the organization of 5,10,15,20-tetra-(p-chlorophenyl)–rare earth porphyrin hydroxyl compound at the air/water interface and in Langmuir–Blodgett films

Effects of a central metal on the organization of 5,10,15,20-tetra-(p-chlorophenyl)–rare earth porphyrin hydroxyl compound at the air/water interface and in Langmuir–Blodgett films

Layer-by-Layer Growth of Electrostatically Assembled Multilayer Porphyrin Films

Química supramolecular de tetrapiridilporfirinas associadas a complexos de platina(II)

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