| 摘要 |
PROBLEM TO BE SOLVED: To obtain a new molecular compound capable of easily controlling emitted light color and realizing highly efficient, highly luminous light emission, therefore useful as a luminous material, light-emitting element or the like. SOLUTION: This new molecular compound is a compound of formula I, II, III or IV (R1 and R2 are each H, an alkyl, alkenyl or halogen; (m1), (m2) and (n) are each 1 or greater than 1, wherein when (n) is 1 or 2, (m1) and/or (m2) is 2 or greater than 2, when (n) is >=3, (m1) and (m2) are each 1 or greater than 1; (n) and (m) are each 1 or greater than 1), e.g. 5,5"-diphenyl-2,2':5',2"- terthiophene. The compound of formula I, II, III or IV is obtained, for example, by the following procedure: 2-phenyl-5-bromothiophene is dissolved in diethyl ether followed by adding metallic Mg to the resultant solution under agitation to prepare a Grignard reagent, which is then incorporated with 1,3-bis(diphenylphosphino)propanenickel (II) chloride followed by addition of a previously dried diethyl ether solution of 2,5-diiodothiophene to carry out a reaction.
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