Catalysis-chemistry

Styrene-hydroxyethyl methacrylate copolymer microsphere immobilized porphyrinatomanganese(III) as a mild, reusable and highly efficient catalyst for epoxidation of cyclohexene with molecular oxygen was written by Ye, Yuan-Jian;Zhou, Xian-Tai;Huang, Jin-Wang;Cai, Jin-Hua;Wu, Wen-Hai;Yu, Han-Cheng;Ji, Hong-Bin;Ji, Liang-Nian. And the article was included in Journal of Molecular Catalysis A: Chemical in 2010.Quality Control of 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol The following contents are mentioned in the article:

On the basis of synthesis of styrene-hydroxyethyl methacrylate copolymer microspheres with a functionalized hydroxyl, we have prepared a new type of copolymer microspheres immobilized porphyrinatomanganese(III), P(St-co-HEMA)MnP, by a condensation reaction between a hydroxyl in copolymer microspheres surface and a carboxyl in porphyrin ring. The obtained copolymer catalyst (P(St-co-HMEA)MnP) was characterized by SEM, UV-vis, IR, ICP and TG-DTG. The SEM image shows that the morphol. of the copolymer catalyst is spheriform with ca. 4 ¦Ìm diameter The catalytic activity of P(St-co-HMEA)MnP to epoxidize cyclohexene in the presence of mol. oxygen and isobutylaldehyde has been studied. The catalytic efficiency of P(St-co-HMEA)MnP is comparable to that of non-supported MnCMPTTP. It is a mild, reusable and highly efficient heterogeneous catalyst for the epoxidation of cyclohexene. This study involved multiple reactions and reactants, such as 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5Quality Control of 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol).

4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5) belongs to catalyst ligands. Attachment of the ligand to the metal may be through a single atom, in which case it is called a monodentate ligand, or through two or more atoms, in which case it is called a didentate or polydentate ligand. Precious metals and metal oxides on carrier materials are used in many industrial processes as heterogenous catalysts.Quality Control of 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Synthesis and biological evaluation of polyamine-porphyrin conjugates as potential agents in photodynamic therapy (PDT) was written by Lamarche, Francois;Sol, Vincent;Huang, Yi-Ming;Granet, Robert;Guilloton, Michel;Krausz, Pierre. And the article was included in Journal of Porphyrins and Phthalocyanines in 2002.Application In Synthesis of 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol The following contents are mentioned in the article:

A new class of porphyrins bearing natural polyamines, I [R = N(CH₂CH₂CH₂NH₂)(CH₂CH₂CH₂CH₂NH₂); R = N(CH₂CH₂CH₂NH₂)(CH₂CH₂CH₂CH₂NHCH₂CH₂CH₂NH₂)], has been designed in order to target the photosensitizers towards malignant cells. The authors report the synthesis of spermidine and spermine porphyrins. Thus, spermidine was diprotected at the terminal amine functions and reacted with I (R = OH) followed by deprotection to give the desired product; spermine was reacted similarly. The photocytotoxicity of these compounds against K562 human chronic myelogenous leukemia cells has been evaluated and compared to Photofrin II. This study involved multiple reactions and reactants, such as 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5Application In Synthesis of 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol).

4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5) belongs to catalyst ligands. Ligand design occupies a central place in organic synthesis and catalysis. The ability of ligands to engender a variety of useful properties of organometallic complexes is the major enabling force for the discovery of new catalytic reactions, activation of small molecules, dramatically enhanced reactivity.Application In Synthesis of 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Study of conformation equilibrium and ¦Ð-¦Ð interaction of porphyrin dimers was written by Ren, Qi-Zhi;Huang, Jin-Wang;Lin, Cui-Wu;Ji, Liang-Nian. And the article was included in Gaodeng Xuexiao Huaxue Xuebao in 1999.Reference of 57412-08-5 The following contents are mentioned in the article:

Porphyrin dimers and their zinc complexes covalently linked with -O(CH₂)_nO- (n = 2-10) chain were synthesized and characterized. Their steady-state fluorescence spectra show the existence of intramol. energy transfer processes in these free-base porphyrin dimers. The C₄ free dimer has the greatest efficiency of energy transfer. By using IR and ¹H NMR methods, the relation between the conformation equilibrium and the length of the alkoxy chain and the metal complexation was studied. With increasing chain lengths, the conformation equilibrium of the porphyrin dimers moves to the closed conformation. The length of the C₄ dimer was suitable to form the closed conformation. The metalation with zinc ion increases the magnitude of ¦Ð-¦Ð interaction of two porphyrin rings while it does not affect the conformation equilibrium of porphyrin dimers. This study involved multiple reactions and reactants, such as 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5Reference of 57412-08-5).

4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5) belongs to catalyst ligands. Catalytic transformations have become a mainstay in the toolkit of the synthetic and increasing non-synthetic chemist alike. Replacing precious metals with cheaper and more environmentally friendly metals is regarded as a highly desirable goal in the field of catalysis.Reference of 57412-08-5

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Stereodynamics of intramolecular triplet energy transfer in carotenoporphyrins was written by Gust, Devens;Moore, Thomas A.;Bensasson, Rene V.;Mathis, Paul;Land, Edward J.;Chachaty, Claude;Moore, Ana L.;Liddell, Paul A.;Nemeth, Gregory A.. And the article was included in Journal of the American Chemical Society in 1985.Recommanded Product: 57412-08-5 The following contents are mentioned in the article:

A series of carotenoporphyrins whose conformations, as determined from ¹H NMR studies, range from folded (with the carotenoid ¦Ð-electron system stacked over that of the porphyrin) to extended (with the chromophores widely separated) were prepared Time-resolved spectroscopic studies revealed intramol. triplet energy transfer from porphyrin to carotenoid. Two distinct pathways for such transfer (presumably occurring via an electron-exchange mechanism) were observed: (a) static transfer which does not require significant intramol. motions and (b) dynamic transfer mediated by intramol. motions. The relative importance of these pathways is a function of mol. structure and dynamics. The results for this series of carotenoporphyrins help define the photochem. and photophys. requirements for protection from singlet oxygen damage both in photosynthetic organisms and in other biol. systems. This study involved multiple reactions and reactants, such as 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5Recommanded Product: 57412-08-5).

4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5) belongs to catalyst ligands. Ligand design occupies a central place in organic synthesis and catalysis. The ligands are electron-rich and highly tunable to provide catalyst systems with a diverse scope, high stability, and reactivity.Recommanded Product: 57412-08-5

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Spectral research into intramolecular photoinduced electron transfer of porphyrin-anthraquinone hybrids was written by Zhao, Ping;Xu, Lian-Cai;Ma, Li. And the article was included in Wuli Huaxue Xuebao in 2011.Recommanded Product: 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol The following contents are mentioned in the article:

A series of covalently linked porphyrin (Por)-anthraquinone (AQ) hybrids Por-C_n-AQ (n=1, 4, 10) with flexible different length carbon chains were synthesized and their intramol. photoinduced electron transfer (PET) properties were investigated mainly by steady-state fluorescence and decayed luminescence spectra. The intramol. photoinduced electron transfer mechanism was studied using d. functional theory (DFT). Intramol. photoinduced electron transfer was found from the porphyrin moiety to the anthraquinone moiety of these dyads and that the intramol. photoinduced electron transfer efficiency is influenced considerably by the length of the linkage between the two moieties in the hybrids. From both the exptl. and theor. results, it was concluded that the intramol. photoinduced electron transfer of these dyads is seemingly most compatible with a ‘through-bond’ (super-exchange) mechanism. This study involved multiple reactions and reactants, such as 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5Recommanded Product: 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol).

4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5) belongs to catalyst ligands. A ligand is an ion or molecule, which donates a pair of electrons to the central metal atom or ion to form a coordination complex. Precious metals and metal oxides on carrier materials are used in many industrial processes as heterogenous catalysts.Recommanded Product: 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Synthesis and Properties of Covalently Linked Trichromophore Systems was written by Khan, Tamanna K.;Ravikanth, Mangalampalli. And the article was included in European Journal of Organic Chemistry in 2011.Formula: C47H36N4O The following contents are mentioned in the article:

Four covalently linked trichromophore systems containing a central boron dipyrromethene (BODIPY) unit connected to a porphyrin unit through the 3-position and a core-modified porphyrin or a porphyrin expanded through the 5-position were synthesized by treating 3-bromo-5-porphyrinyl BODIPY or 3-bromo-5-rubyrinyl BODIPY with the corresponding hydroxy porphyrin or hydroxy-expanded porphyrin in CHCl₃ at 60 ¡ãC. The compounds are freely soluble in common organic solvents and confirmed by mass spectrometry and 1D and 2D NMR spectroscopy techniques. The absorption and electrochem. studies support weak ground-state interactions among the three chromophore units within the trichromophore systems. The fluorescence studies indicate that BODIPY emission is quenched to a significant degree in all trichromophore systems due to a transfer of energy to one or both macrocyclic units attached to the BODIPY chromophore. This study involved multiple reactions and reactants, such as 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5Formula: C47H36N4O).

4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5) belongs to catalyst ligands. Ligand design occupies a central place in organic synthesis and catalysis. It is clear that future advancements in metal complexes and their applications crucially depend on ligand design, whereas the ligand electronic, steric and topological properties provide numerous improvements to the reactivity and selectivity at the metal centers.Formula: C47H36N4O

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Excitational energy and photoinduced electron transfer reactions in Ge(IV) corrole-porphyrin hetero dimers was written by Giribabu, Lingamallu;Kandhadi, Jaipal;Kanaparthi, Ravi Kumar;Reeta, P. Silviya. And the article was included in Journal of Luminescence in 2014.Recommanded Product: 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol The following contents are mentioned in the article:

We have constructed hetero dimers by utilizing the axial bonding capabilities as well as known oxophilicity of Germanium(IV) ion of Germanium(IV) corroles as basal scaffolding unit and either free-base or Zn^II porphyrin at axial position for the first time. Both the hetero dimers have been completely characterized by elemental anal., UV-visible, proton NMR (1D and ¹H-¹H COSY) and fluorescence spectroscopies as well as electrochem. methods. The ground state properties indicate that there exists a min. ¦Ð-¦Ð interactions between the macrocyclic units of these dyads. Excited state properties showed that there is an electronic energy transfer competing photoinduced electron transfer from singlet state of basal metalloid corrole to the axial porphyrin and a photoinduced electron transfer from excited state of axial porphyrin to the ground state of central metalloid corrole are possible. This study involved multiple reactions and reactants, such as 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5Recommanded Product: 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol).

4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5) belongs to catalyst ligands. Ligand, in chemistry, any atom or molecule attached to a central atom, usually a metallic element, in a coordination or complex compound. And they often provide a convenient approach to fine-tuning the performance of known catalysts.Recommanded Product: 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

The synthesis of new potential photosensitizers. Part 3. Tetraphenylporphyrin esters of profens was written by Kus, Piotr;Kozik, Violetta;Rojkiewicz, Marcin;Sochanik, Aleksander;Szurko, Agnieszka;Kempa, Marta;Kozub, Patrycja;Rams-Baron, Marzena;Jarzembek, Krystyna;Stefaniak, Marta;Sakowicz, Julian. And the article was included in Dyes and Pigments in 2015.Product Details of 57412-08-5 The following contents are mentioned in the article:

Six tetra-Ph derivatives of arylpropionic acids (profens) were synthesized in search for improved novel photosensitizers that might find application in photodynamic therapy (PDT) of various cancers. Our goal was to alter hydrophobic-hydrophylic characteristics of the tetraphenylporphyrin ring by substitution with propionyl derivatives As starting materials we used profens known primarily from their widespread use as non-steroidal anti-inflammatory drugs (ibuprofen, naproxen, ketoprofen, fenoprofen, fluorbiprofen) and 2-phenylpropionic acid (model compound). The new compounds were characterized using spectroscopic and photophys. methods with focus given to measurement of mols.’ lifetime in excited triplet state, time-resolved singlet oxygen phosphorescence and measurement of photostability. Fluorescence quantum yields were also determined; data revealed no planarity changes in the porphyrin mol. following substitution with profens. This study involved multiple reactions and reactants, such as 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5Product Details of 57412-08-5).

4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5) belongs to catalyst ligands. Ligands, especially phosphines and carbenes, can play a key role in modifying and controlling homogeneous organometallic catalysts. And they often provide a convenient approach to fine-tuning the performance of known catalysts.Product Details of 57412-08-5

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Porphyrin-functionalized oligo- and polythiophenes was written by Schaeferling, Michael;Baeuerle, Peter. And the article was included in Journal of Materials Chemistry in 2004.Product Details of 57412-08-5 The following contents are mentioned in the article:

The synthesis and properties of bi- and terthiophenes substituted with meso-tetraphenylporphyrin (TPP) groups via an isolating oxaalkyl chain is described. Electrooxidative polymerization leads to the corresponding metal complexed porphyrin-functionalized polythiophenes. The electrochem. and spectroscopic properties of the polymer films reveal the superimposition of the electronic properties of the individual ¦Ð-systems. Spectroelectrochem. experiments and conductivity measurements point to a mixed charge transport mechanism. Polaronic and bipolaronic delocalization on the conjugated chains combined with electron hopping processes via the porphyrin redox centers result in high stability of the polymers against overoxidn. Importantly, hybrid materials were obtained which at the same time exhibit properties of a conducting polymer and a redox polymer that can be used for the detection of polychlorinated phenols in amperometric sensors. This study involved multiple reactions and reactants, such as 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5Product Details of 57412-08-5).

4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5) belongs to catalyst ligands. Catalytic transformations have become a mainstay in the toolkit of the synthetic and increasing non-synthetic chemist alike. The actual catalysts are metal complexes that are prepared from ligands and appropriate metal precursors.Product Details of 57412-08-5

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Studies of the antenna effect in polymer molecules. 29. Synthesis and properties of poly[sodium styrene sulfonate-co-(4-acryolyloxyphenyl)-10,15,20-tritolylporphyrin] in aqueous solution was written by Nowakowska, Maria;Karewicz, Anna;Loukine, Nikolai;Guillet, James E.. And the article was included in Polymer in 2002.Electric Literature of C47H36N4O The following contents are mentioned in the article:

The novel water soluble antenna polyelectrolyte: poly[sodium styrene sulfonate-co-(4-acryolyloxyphenyl)-10,15,20-tritolylporphyrin] (PSSS-Po) was synthesized, and its photophys. and photochem. properties were studied. Solubilization of the various mol. probes such as pyrene or perylene in aqueous solution of the PSSS-Po proved that the polymer chain adopts the compact conformation. The interior of the polymer pseudomicelle is significantly less polar than water. The effective quenching of polymeric porphyrin fluorescence by sulfopropyl viologen (SPV) can be explained considering the possibility of electron transfer from the singlet-excited state of Po to SPV. This has been supported by measuring an absorption spectrum for PSSS-Po/SPV system after selective irradiation of Po chromophores. The formation of the new absorption bands characteristic for SPV^¡Ì- radical anion indicated that the charge separation was achieved in that system. This study involved multiple reactions and reactants, such as 4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5Electric Literature of C47H36N4O).

4-(10,15,20-Tri-p-tolylporphyrin-5-yl)phenol (cas: 57412-08-5) belongs to catalyst ligands. Ligand, in chemistry, any atom or molecule attached to a central atom, usually a metallic element, in a coordination or complex compound. Chiral compounds with high purities and ee values are often used as ligands for catalytically active metal complexes. Electric Literature of C47H36N4O

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI