Tetraphenyl[5]cumulene (tetraphenylhexapentaene) underwent cyclotrimerization in refluxing toluene for 10-15 min to give a tricyclodecadiene derivative in 68% yield.

beta,meso,beta-Fused porphyrin oligomers have many attractive photophysical features such as strong absorption in the near-IR at wavelengths greater than 1000 nm, and high two-photon cross sections. However their ultrafast S(1)-S(0) deactivation (k(d) > 10(11) s(-1)) limits potential applications. We have synthesised a deuterated fused porphyrin dimer to test whether deuteration influences the ...

The centrifugal liquid membrane (CLM) cell has been utilized for chiroptical studies of liquid-liquid interfaces with a conventional circular dichroism (CD) spectropolarimeter. These studies required the characterization of optical properties of the rotating cylindrical CLM glass cell, which was used under the high speed rotation. In the present study, we have measured the circular and linear d...

The syntheses, UV-VIS and fluorescence data of two methylbenzoate derivatives of tetrabenzoporphyrins, i.e., 5-p-methoxycarbonylphenyltetrabenzoporphyrin (TBPPhCO2Me), 5-p-methoxycarbonylphenyl-10,15,20triphenyltetrabenzoporphyrin (TPTBPCO2Me), and their zinc and magnesium complexes are described. The latter was tested as a bis(zinc-porphyrin) host in the CD-based molecular recognition studies ...

Abstract Photodynamic therapy involves the concomitant action of three components, light with an appropriate wavelength, molecular oxygen, and a molecule, able to absorb electromagnetic radiation, called photosensitizer (PS). A fundamental aspect is bioavailability PS that directly related some physicochemical properties itself as it should feature certain degree lipophilicity easily cross cell...

Cadmium and mercury have a risk of disturbing the balance in ecosystem. Cd(II) is accumulated in soil and living system organism, it is easily absorbed by plants, through their root system and by leave [1]. Acid reaction of soil increases its mobility and availability. It remains in tissues for a relatively long time and is accumulated in vital organs especially in kidney and liver [2]. Contami...

The electrooptic effects of porphyrin J-aggregates of tetraphenyl porphyrin tetrasulfonic acid (TPPS) in aqueous solution were studied using electroabsorption (EA) spectroscopy. When the J-aggregates were three-dimensionally distributed, the EA spectra exhibited broadening in the exciton band. When a DC or AC electric field was applied for a long time, the J-aggregates with KCl were dissociated...