Modified Polymerization Initiator and Modified Conjugated Diene-Based Polymer Including Functional Group Derived Therefrom

A modified polymerization initiator comprising:

• one or more units derived from a compound represented by the following Formula 1, and a unit derived from a compound represented by the following Formula 2:
• in Formula 1,
• X is —NRaRb, —ORc, or —SRd, and
• Ra to Rd are each independently an alkyl group of 1 to 30 carbon atoms, an alkenyl group of 2 to 30 carbon atoms, an alkynyl group of 2 to 30 carbon atoms, a cycloalkyl group of 3 to 30 carbon atoms, an aryl group of 6 to 30 carbon atoms, a heteroalkyl group of 1 to 30 carbon atoms, a heteroalkenyl group of 2 to 30 carbon atoms, a heteroalkynyl group of 2 to 30 carbon atoms, a heterocycloalkyl group of 2 to 30 carbon atoms, or a heteroaryl group of 3 to 30 carbon atoms, where each of Ra to Rd is unsubstituted or substituted with a substituent comprising one or more heteroatoms selected from N, O, S, Si and F atoms, and Ra and Rb may be connected with each other to form an aliphatic hydrocarbon ring of 5 to 20 carbon atoms, an aromatic hydrocarbon ring of 6 to 20 carbon atoms, or a heterocycle of 3 to 20 carbon atoms, which are unsubstituted or substituted with an alkyl group of 1 to 30 carbon atoms,
• M-R1 [Formula 2]
• in Formula 2,
• M is an alkali metal, and
• R1 is hydrogen, an alkyl group of 1 to 30 carbon atoms, an alkenyl group of 2 to 30 carbon atoms, an alkynyl group of 2 to 30 carbon atoms, a cycloalkyl group of 5 to 30 carbon atoms, or an aryl group of 6 to 30 carbon atoms.