HEMATOPORPHYRIN and HPD: PHOTOPHYSICS, PHOTOCHEMISTRY and PHOTOTHERAPY

Photophysics and photochemistry of naphthoxazinone derivatives.

The photophysics and photochemistry of a series of naphthoxazinones have been studied using a combination of methods ranging from steady-state and time-resolved spectroscopic techniques to product analysis. The photophysics of naphthoxazinone derivatives is very dependent on the structure: phenanthrene-like compounds exhibit higher fluorescence quantum yield than the less aromatic anthracene-li...

Laser-induced Fluorescence Studies of Hematoporphyrin Derivative (hpd) In Normal and Tumor-tissue of Rat

Microcirculation Modifications by Localized Microwave Hyperthermia and Hematoporphyrin Phototherapy *

Due, in part, to increasing clinical interest, active investigation of the physiological phenomena induced by hyperthermia is in progress (1,2,7,13). The studies by Eddy (7) and Reinhold (13) employing "chamber systems" have both shown changes in the microvascular network as a function of temperature and exposure time. Cater et al. (3) reported on changes in tumor oxygen tension with hypertherm...

Theoretical Studies on Photophysics and Photochemistry of DNA

Theoretical studies on biological systems like nucleic acid and protein have been widely developed in the past 50 years and will continue to be a topic of interest in forefronts of natural science. In addition to experimental science, computational modeling can give useful information and help us to understand biochemical issues at molecular, atomic and even electronic levels. Deoxyribonucleic ...

r Bonds : Electronic structure , photophysics , and photochemistry of oligosilanes *

The making and breaking of σ bonds is an integral part of almost all photochemical reactions. Yet, the electronic states of σ electrons are not nearly as well understood as the states of π-electron systems. Efforts in our laboratory to enhance the current state of their understanding are described, using the specific example of oligosilanes. We address the intrinsically cyclic nature of σ deloc...