Nagoya Institute of Technology

Toyota Jidosha Kabushiki Kaisha

Jx Nippon Oil Energy Corporation

Hideki Masuda

Shinichi Matsumoto

Haruyuki Nakanishi

Masaki Minami

Hidekazu Arikawa

Tsutomu Nakamura

Tatsuya Fujii

Tomohiko Inomata

Taku Sawaki

Noriyo Yamanaka

Zhengzhe Jin

Disclosed is a novel photosensitizer that can absorb light in a wide visible light region and in the case of a very thin film form, can enhance a light absorption efficiency by virtue of a large light absorption coefficient. The photosensitizer is used for metal oxide semiconductor electrodes and comprises a metal complex represented by a general formula MLLX, wherein M is a group 8 transition metal of the periodic table, Xs are each independently a halogen atom, a cyano group, a thiocyanate group, an isothiocyanate group, an isocyanate group, an isocyanide group or a hydroxyl group, or a bidentate ligand in the case where Xs are bonded to one another, Land Lare each a ligand having an aromatic ring, and either Lor Lhas a functional group having a COOH group or PO(OH), and when the photosensitizer is adsorbed on a metal oxide semiconductor electrode via ligands Land L, the difference &#x394;L between the energy levels of ligands Land Lin their excited states, calculated in accordance with a GAUSSIAN03 quantum chemistry calculation program is 0.25 eV or more.

Photosensitizer and photovoltaic device

Disclosed is a method for detecting a low concentration gas. In the method, a measurand gas containing the target gas in a concentration of 50 ppm or less is supplied to an oscillation element which contains a quartz crystal resonator and a zeolite including a metal complex (such as a zeolite including a cobalt phthalocyanine complex) present on or above the quartz crystal resonator. The target gas is then detected through a change in resonance frequency of the quartz crystal resonator, the change being caused by the adsorption of the target gas by the metal-complex-including zeolite.

Method for detecting low concentration gas

A catalyst obtained by calcining a hydrazone metal complex in which at least one catalytic metal species is coordinated to a hydrazone compound represented by a General Formula (1) below, a hydrazone polymer compound including at least a structural unit derived from a hydrazone compound represented by the General Formula (1) below as a repeating unit, and a catalyst obtained by calcining a hydrazone polymer metal complex in which at least one catalytic metal species is coordinated to a hydrazone polymer compound including at least a structural unit derived from a hydrazone compound represented by the General Formula (1) below: wherein, Py represents a 2-pyridyl group, a 3-pyridyl group, or a 4-pyridyl group.

Catalyst using hydrazone compound, hydrazone polymer compound, and catalyst using hydrazone polymer compound

Growing community of inventors

Okazaki, Japan

Hideki Masuda