The adsorption of O2/H2O molecules on the ZnO nanowire (NW) surface results in the long lifetime of photo-generated carriers and thus benefits ZnO NW-based ultraviolet photodetectors by suppressing the dark current and improving the photocurrent gain, but the slow adsorption process also leads to slow detector response time. Here we show that a thermally evaporated copper phthalocyanine film is...

Abstract The detection of hydrogen sulfide (H 2 S) is essential because its toxicity and abundance in the environment. Hence, there an urgent requisite to develop a highly sensitive economical H S system. Herein, zinc phthalocyanine (ZnPc) thin film-based K + -exchanged optical waveguide (OWG) gas sensor was developed for by using spin coating. showed excellent sensing performance at room tempe...

The synthesis and the optical properties of a family new fluorenyl phthalocyanines substituted with water-solubilizing triethyleneglycol chains is described. These biocompatible molecules exhibit strong one- two-photon absorptions, together fluorescence photosensitization similar to those their lipophilic analogues, thus outperforming unsubstituted zinc phthalocyanine in terms brightness single...

thin film phthalocyanines(pc), incloding zinc, iron, and magnesium phthalocyani-nes, were prepared by vacuum deposition method. chronocoulometry was used to study the charge transfer reaction mechanism of ionic species through the thin films. the results obtained in chronocoulometric studies shows that the thin film phthalocyanines could operate via two mechanisms.the first mechanism metal pc t...

5-Aminolevulinic acid (5-ALA), a prodrug of Protoporphyrin IX (PpIX), is used for photodynamic therapy of several medical conditions, and as an adjunct for fluorescence guided surgery. The clinical problem of patient photosensitivity after systemic administration could likely be ameliorated if the 5-ALA was delivered more selectivity to the treatment site. Liposomal formulations are inherently ...