We describe the synthesis and properties of modified amylose containing an aryl spacer at a regular interval in its main chain as a new host polymer. The modified amylose was efficiently synthesized by copper-catalyzed alkyne-azide 1,3-dipolar cycloaddition polymerization of alkyne-containing permethylated maltohexaosyl azide 3. The polymer exhibited greater hydrophobicity than permethylated amylose. A mixture of the polymer with terthiophene formed an inclusion complex in a 10% dimethyl sulfoxide aqueous solution, leading to intermolecular chirality transfer from the polymer to terthiophene.