Exposed lens retroreflective articles comprising a self-assembled dielectric mirror

A transfer article comprising:

• a carrier web having a first major surface and a second major surface opposite the first major surface;
• a layer of transparent microspheres partially embedded in the first major surface of the carrier web;
• a reflective layer disposed over the microspheres and the first major surface of the carrier web, the reflective layer comprising a dielectric mirror comprising a first stack and a second stack positioned in planar contact with the first stack, wherein each of the first stack and the second stack comprises at least one bilayer, wherein each bilayer comprises a first material with a first bonding group and a second material with a complementary second bonding group;
• and
• a binder layer disposed over the reflective layer.

A method of making a retroreflective article, the method comprising:

• partially embedding a plurality of transparent microspheres in a carrier web;
• applying a dielectric mirror to the exposed portions of the microspheres to form a reflective layer, the dielectric mirror comprising a first stack and a second stack positioned in planar contact with the first stack, wherein each of the first stack and the second stack comprises at least one bilayer, wherein each bilayer comprises a first material with a first bonding group and a second material with a complementary second bonding group;
• and
• applying a binder composition to the reflective layer to form a binder layer.