Sumitomo Chemical Company, Limited

Yoshikazu Umemoto

Masato Ueda

Yutaka Ie

Yoshio Aso

Shigeru Sasaki

Kohei Asada

A luminescent composition comprising a luminescent organic compound and a conjugated polymer compound having a luminescence maximum further toward the short wavelength end than the luminescence maximum of the luminescent organic compound at 350 nm to 500 nm, and satisfying the following formula (1);()&#xd7;&#x2267;0.04&#x2003;&#x2003;(1)in the formula,

Luminescent composition and light-emitting element using said composition

A polymer having a repeating unit represented by the following general formula (I) and a ferrocene-based reduction potential of &#x2212;1.5 to &#x2212;0.5 V as measured by a cyclic voltammetry method 

Polymer having unit obtained by condensation of difluorocyclopentanedione ring and aromatic ring, organic thin film using the same, and organic thin film device

A polymer comprising a repeating unit represented by the following general formula (I). (In the formula, Arrepresents a divalent aromatic hydrocarbon or divalent heterocyclic group, X, Y, Xand Yeach independently represent a fluorine atom or alkylthio group, and Xand Yand Xand Ymay together form a carbonyl or thiocarbonyl group with their bonding carbon atom.) 

Polymer comprising unit comprising fluorocyclopentane ring fused with aromatic ring and organic thin film and organic thin film element both comprising the same

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Suita, Japan

Yoshikazu Umemoto