It radiates

摘要

PROBLEM TO BE SOLVED: To provide a luminous agent having absorbing property in a wave length in the ultraviolet region and strong luminous intensity in the visible region specifically in wave lengths near blue color when excited by ultraviolet rays. SOLUTION: This luminous agent includes a 4-5-bisethenyl substituted benzene derivative which is represented by formula (I) [Wherein, Xs are each independently a halogen atom or a cyano group; Rs are a substituted or non-substituted aryl group, or a 3-20C non-substituted or substituted alkyl group; n represents an integer of 0 or 1].