Spirobifluorene oligomers are known to be strong emitters. Moreover, chiral macrocycles such as 2- [n] would be expected to show emitting as well as chiroptical properties. The emission spectroscopy data showed that the the 4-mer and 5-mer were red-shifted as compared to that for the 3-mer (Figure ). The quantum yields ϕPL of 2-[3], 2-[4], and 2- [5] in CH2Cl2 solution were high (95%, 93%, and 94%, respectively, Table ). In the case of the cyclic 3-mer, the quantum yield was also high in the solid state (65%).