Photon upconversion composition, film, method for converting visible light into ultraviolet light, and compound
AssigneeKyushu University, National University Corporation
InventorsNobuhiro YANAI, Nobuo KIMIZUKA, Naoyuki HARADA, Yoichi SASAKI, Yuya WATANABE, Bac Lam MAI
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Abstract
A photon upconversion composition containing a naphthalene compound substituted with a substituent containing at least one selected from the group consisting of an alkynyl group, a substituted silyl group, a benzene ring, an heteroaromatic ring, a cyano group and a halogen atom can efficiently convert an excitation light into a UV light at a low excitation light intensity.
Claims16
A method of photon upconversion comprising irradiating a composition containing a naphthalene compound substituted with a substituent containing at least one selected from the group consisting of an alkynyl group, a substituted silyl group, a benzene ring, an heteroaromatic ring, a cyano group and a halogen atom with a light.
The method according to claim 16, wherein the UV light has a wavelength in a range of 360 to 400 nm.
A compound represented by the following general formula (1′):
- wherein R1′, R2′ and R3′ each independently represent a substituted or unsubstituted alkyl group,
- the total carbon number of R1′, R2′ and R3′ is 6 or more,
- X′ represents a group of a combination of one or more selected from the group consisting of an alkynyl group, an alkenyl group, an alkyl group, an aromatic ring group, a heteroaromatic ring group, an alkoxy group, a carboxy group, a cyano group and a halogen atom,
- m′ represents an integer of any of 1 to 8,
- n′ represents an integer of any of 0 to 7,
- m′+n′ is an integer of any of 1 to 8.
Dependencies are inferred from the claim text.