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Your search keyword '"Propanols -- Optical properties"' showing total 6 results
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6 results on '"Propanols -- Optical properties"'

1. Characterization of porphyrins, chlorins and bacteriochlorins formed via allomerization of bacteriochlorophyll a. Synthesis of highly stable bacteriopurpurinimides and their metal complexes

Author

Kozyrev, Andrei N., Yihui Chen, Goswami, Lalit N., Tabaczynski, Walter A., and Pandey, Ravindra K.

Subjects
Porphyrins -- Chemical properties, Porphyrins -- Optical properties, Chlorophyll -- Chemical properties, Chlorophyll -- Optical properties, Propanols -- Chemical properties, Propanols -- Optical properties, Biological sciences, Chemistry
Abstract

The methodology of chlorophyll allomerization in the bacteriochlorophyll a system is extended for the preparation of partly oxidized Bchl a derivatives, which could be important precursors as models for photosynthetic mimicking studies and potential candidates for photodynamic therapy (PDT). The highly stable bacteriopurpurinimides have a distinct advantage over other naturally occurring bacteriochlorins as photosensitizers for photodynamic therapy because of their strong absorptions in their near-IR regions.

Published
2006

2. Gas-phase basicities around and below water revisited

Author

Leito, Ivo, Koppel, Ilmar A., Burk, Peeter, Tamp, Sven, Kutsar, Martin, Mishima, Masaaki, Abboud, Jose-Luis M., Davalos, Juan Z., Herrero, Rebeca, and Notario, Rafael

Subjects
Cyclotron -- Usage, Fluorination -- Analysis, Mass spectrometry -- Usage, Propanols -- Chemical properties, Propanols -- Optical properties, Quantum chemistry -- Analysis, Chemicals, plastics and rubber industries
Published
2010

3. Distinguishing tunneling pathways for two chiral conformer pairs of 1,3-propanediol from the microwave spectrum

Author

Plusquellic, D. F., Lovas, F. J., Pate, Brooks H., Neill, Justin L., Muckle, Matthew T., and Remijan, Anthony J.

Subjects
Chirality -- Analysis, Dipole moments -- Analysis, Microwave spectroscopy -- Usage, Propanols -- Chemical properties, Propanols -- Structure, Propanols -- Optical properties, Quantum chemistry -- Analysis, Transition state (Chemistry) -- Analysis, Chemicals, plastics and rubber industries
Published
2009

5. Exploiting an inherent neighboring group effect of [alpha]-amino acids to synthesize extremely hindered dipeptides

Author

Brown, Zachary Z. and Schafmeister, Christian E.

Subjects
Amino acids -- Chemical properties, Peptides -- Chemical properties, Propanols -- Chemical properties, Propanols -- Optical properties, Chemistry
Abstract

An operationally simple approach is used for preparing extremely hindered dipeptides by using commercially available amino acids and mild reaction conditions. This approach has provided high yields of dipeptide and has maintained stereochemical integrity.

Published
2008

6. Viscosity dependence of the kinetic parameters of the radical ion pair in homogeneous solution determined by optically detected X- and Ku-band electron spin resonance

Author

Kitahama, Yasutaka

Subjects
Electron transport -- Research, Electron paramagnetic resonance spectroscopy -- Analysis, Porphyrins -- Optical properties, Porphyrins -- Spectra, Porphyrins -- Chemical properties, Propanols -- Optical properties, Propanols -- Spectra, Propanols -- Chemical properties, Chemicals, plastics and rubber industries
Abstract

The dynamics of the radical ion pairs (RIPs) obtained by photoinduced electron-transfer reaction from zinc tetraphenyl porphyrin to 2-methyl-1,4-naphthoquinone in mixtures of 2-propanol and cyclohexanol is described. The studies provide insight into viscosity dependence of the kinetic parameters of the radical ion pairs at various solvent viscosities.

Published
2008

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