- Adsorption equilibria of novel phthalocyaninatomagnesium(II) derivatives with thioethers at the toluene/water interface
-
Three novel phthalocyaninatomagnesium(II) derivatives with eight peripheral thioethers (MgPc(SR)8) such as (2,3,9,10,16,17,23,24-octakis- ethylthiophthalocyaninato)magnesium(II) (MgPc(SEt)8), (2,3,9,10,16,17,23,24-octakisbenzylthioph
- Adachi, Kenta,Watarai, Hitoshi
-
-
Read Online
- Photophysical and photochemical parameters of octakis (benzylthio) phthalocyaninato zinc, aluminium and tin: Red shift index concept in solvent effect on the ground state absorption of zinc phthalocyanine derivatives
-
This paper addresses the synthesis of octa-substituted benzylthio metallophthalocyanines (OBTMPcs) that contain the central metal ions of Zn 2+, Al3+ and Sn4+. The ground state absorption of ZnPc(SR)8 (OBTZnPc) along with the ZnPc derivatives, well documented in literature were used to study a new concept called the red shift index (RsI). The concept is based on the empirical values of R sI of the different complexes in solvent media. Unequivocally, parameters used in this paper show strong correlations that are consistent with the results obtained. For instance, RsI of the complexes tend to increase as the refractive index, nD, and solvent donor, DN, of solvent increases. Photodegradation (photobleaching) quantum yield, φd measurements of these compounds show that they are highly photostable, φd (0.03-0.33 × 10-5). The triplet quantum yield, φT (0.40-0.53) and the triplet lifetime, τT (610-810 μs) are within the typical range for metallophthalocyanines in DMSO. The photosensitisation efficiency, S Δ, is relatively high for all the molecules (0.74-0.90).
- Akpe, Victor,Brismar, Hjalmar,Nyokong, Tebello,Osadebe
-
-
Read Online
- Synthesis and electrochemical and photophysical studies of tetrathiafulvalene-annulated phthalocyanines
-
The synthesis of tetrakis(tetrathiafulvalene)-annulated metal-free and metallophthalocyanines 5-8 via the tetramerization of the phthalonitrile derivative 4 is reported. All of them have been fully characterized by electronic absorption spectroscopy, thin-layer cyclic voltammetry, mass spectrometry, and elemental analysis. Their solution electrochemical data show two reversible four-electron oxidation waves, indicating that these fused systems are strong π-electron donors, which give rise to tetra- or octaradical cation species. For the metal-free phthalocyanine 5, additionally a reversible one-electron wave was found in the negative direction arising from the reduction of the macrocycle. Moreover, the tetrathiafulvalene unit acts as an efficient reductive electron-transfer quencher for the phthalocyanine emission, but upon its oxidation, an intense luminescence is switched on.
- Loosli, Claudia,Jia, Chunyang,Liu, Shi-Xia,Haas, Marco,Dias, Marylene,Levillain, Eric,Neels, Antonia,Labat, Gael,Hauser, Andreas,Decurtins, Silvio
-
-
Read Online
- Surface modified polymer hollow nanocapsules, and method for preparing the same
-
The present invention relates to surface-modified polymer hollow nanocapsules in which polymer hollow nanocapsules, formed via polymerization of a composition containing a compound represented by chemical formula 1, are surface-modified to have a positive zeta potential when dispersed in water; and a method of preparing the same. In the chemical formula 1: X is subphthalocyanine, phthalocyanine, or porphyrin; L_1 is -OR_1- or -SR_2-, wherein the R_1 and R_2 are each independently a direct bond, an alkylene group having 1-10 carbon atoms, an alkenylene group having 2-10 carbon atoms, a cycloalkylene group having 6-20 carbon atoms, a cycloalkenylene group having 6-20 carbon atoms, or an arylene group having 6-20 carbon atoms; Y_1 is a vinyl group, an acryl group, a methacryl group, a thiol group, or an amine group; and m is an integer of 3-10.COPYRIGHT KIPO 2018
- -
-
-
- A Multifunctional Subphthalocyanine Nanosphere for Targeting, Labeling, and Killing of Antibiotic-Resistant Bacteria
-
Developing a material that can combat antibiotic-resistant bacteria, a major global health threat, is an urgent requirement. To tackle this challenge, we synthesized a multifunctional subphthalocyanine (SubPc) polymer nanosphere that has the ability to target, label, and photoinactivate antibiotic-resistant bacteria in a single treatment with more than 99 % efficiency, even with a dose as low as 4.2 J cm-2 and a loading concentration of 10 nM. The positively charged nanosphere shell composed of covalently linked SubPc units can increase the local concentration of photosensitizers at therapeutic sites. The nanosphere shows superior performance compared to corresponding monomers presumably because of their enhanced water dispersibility, higher efficiency of singlet-oxygen generation, and phototoxicity. In addition, this material is useful in fluorescence labeling of living cells and shows promise in photoacoustic imaging of bacteria in vivo.
- Roy, Indranil,Shetty, Dinesh,Hota, Raghunandan,Baek, Kangkyun,Kim, Jeesu,Kim, Chulhong,Kappert, Sandro,Kim, Kimoon
-
p. 15152 - 15155
(2016/01/25)
-
- Electrochemical, spectroscopic and microscopic studies of new manganese phthalocyanine complexes in solution and as self-assembled monolayers on gold
-
Four new manganese(III) phthalocyanines (3a-d), octasubstituted at the peripheral position with pentylthio, decylthio, benzylthio, and phenylthio groups, respectively, were synthesized. Their specific electrochemical, spectroscopic and microscopic propert
- Coates, Megan,Antunes, Edith,Nyokong, Tebello
-
experimental part
p. 568 - 581
(2011/10/04)
-
- Synthesis, structure and physical properties of tetrabutylammonium salts of nickel complexes with the new ligand dcbdt = 4,5-dicyanobenzene-1,2-dithiolate, [Ni(dcbdt)2]z- (z = 0.4, 1, 2)
-
The synthesis and characterization of the new aromatic ortho-dithiol, 4,5-dicyanobenzene-1,2-dithiol (3) is reported. This compound was used to prepare tetrabutylammonium salts of novel nickel complexes; the nickel(II) salt (nBu4N)2-[Ni(dcbdt)
- Simao, Dulce,Alves, Helena,Belo, Dulce,Rabaca, Sandra,Lopes, Elsa Branco,Santos, Isabel Cordeiro,Gama, Vasco,Duarte, Maria Teresa,Henriques, Rui Teives,Novais, Horacio,Almeida, Manuel
-
p. 3119 - 3126
(2007/10/03)
-