photosensitizer


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to photosensitizer: Photoexcitation

photosensitizer

[¦fōd·ō′sen·sə‚tīz·ər]
(physical chemistry)
A light-absorbing substance that initiates a photochemical or photophysical reaction in another substance (molecule), and is not consumed in the reaction.
References in periodicals archive ?
If the causative photosensitizer is not the test substance but a metabolite of the test substance, a systemic photoprovocation test can be utilized.
Using clean quartz cells (1 cm in length), 1 mL aliquots of each solution containing trap and photosensitizer as described above were exposed to visible light during consecutive periods of 5 or 10 minutes for a total exposure time of 75 minutes.
2]) is an electronically excited form of oxygen which is well known to be formed when photosensitizers such as chlorophyll or the aromatic dye rose bengal absorb light energy and transfer some of that energy to molecular oxygen [1,2].
Three photosensitizers have been described in the literature: dihematoporphyrin ether (Photofrin), metatetrahydroxyphenylchlorin (Fosean), and 5-aminolevulinic acid (ALA).
Although the photosensitizer is absorbed by both normal and cancerous cells, it stays in cancer cells longer than in normal cells.
The main effects of different concentrations of the photosensitizer compound and exposure periods to light on percent mortality and the effect of the photosensitizer compound on enzyme activity and their interactions were separated by the Tukey test and Dannett's T-test at the 0.
As no previous reports are available on PDT of in vivo experimental cancer models using embelin, we designed this study so as to evaluate the therapeutic effect of embelin as a photosensitizer in solid tumor-induced Swiss albino mice.
Protoporphyrin IX, an immediate precursor of heme, can act as an effective photosensitizer for PDT.
The combination of light and photosensitizer produces oxygen free radicals that kill the cancer cells and damages tumor blood vessels.
Natural dyes as photosensitizers for dye-sensitized solar cell.
Photodynamic suppression of Enterococcus faecalis using the photosensitizer mTHPC.
Once this excited photosensitizer encounters tissue oxygen, it will transfer its energy, forming a highly reactive singlet oxygen molecule.