Periodic nanostructures from self assembled wedge-type block-copolymers

A wedge-type block copolymer comprising:

• a first polymer block comprising at least 10 first repeating units;
• wherein each of said first repeating units of said first polymer block comprises a first polymer backbone group covalently linked to a first wedge group characterized by at least three branch points each terminating in an independent branch moiety comprising at least 10 atoms;
• said first wedge group having a molecular weight greater than or equal to 50 Da;
• and
• a second polymer block comprising at least 10 second repeating units;
• said second polymer block directly or indirectly covalently linked to said first polymer block along a backbone of said wedge-type block copolymer;
• wherein each of said second repeating units of said second polymer block comprises a second polymer backbone group covalently linked to a first polymer side chain group or a second wedge group different from said first wedge group;
• wherein said wedge-type block copolymer has a molecular weight selected from the range of 1,000,000 Da to 30,000,000 Da;
• wherein said wedge-type block copolymer has the formula (FX2a), (FX2b), (FX2c) or (FX2d):
• wherein:
• Q1 is a first backbone terminating group and Q2 is a second backbone terminating group;
• L1 is a first linking group, L2 is a second linking group, L3 is a third linking group and L4 is a fourth linking group;
• A is said first wedge group;
• B is said first polymer side chain group or said second wedge group;
• D is a wedge group;
• E is a polymer side chain group or a wedge group;
• and
• each of n and m is independently an integer selected from the range of 20 to 2000.