NOVELTY - Composition comprises: a block copolymer, where a block comprises a hydrogen bond donor or a hydrogen bond acceptor; and a preformed non-polymeric additive comprising an inorganic core and at least one organic functional group that comprise a hydrogen bond acceptor or a hydrogen bond donor, where the preformed non-polymeric additive and the copolymer are associated by hydrogen bonds formed between them so that the resulting copolymer-additive composite exhibits a more ordered nanostructure than in the absence of the preformed non-polymeric additive.    USE - The composition is useful for forming an ordered copolymer blend composition with periodic nanostructures (claimed) which are used in articles including a component of a photovoltaic system, component of a battery system, component of a photonics system, component of an artificial membrane system, component of a water purification system, component of a fuel cell system, component of a display system, component of data storage system, component of a resist system for device patterning, and component of a flexible electronics system.    ADVANTAGE - The composition induces or enhances orders and nanostructures in block copolymer and surfactants.    DETAILED DESCRIPTION - Composition comprises: a block copolymer, where a block comprises a hydrogen bond donor or a hydrogen bond acceptor; and a preformed non-polymeric additive comprising an inorganic core and at least one organic functional group that comprise a hydrogen bond acceptor or a hydrogen bond donor, where the preformed non-polymeric additive and the copolymer are associated by hydrogen bonds formed between them so that the resulting copolymer-additive composite exhibits a more ordered nanostructure than in the absence of the preformed non-polymeric additive. The copolymer is a tri-block copolymer comprising a poly(propylene oxide) block or a poly(ethylene oxide) block, and the preformed non-polymeric additive comprises an amino, phenol or carboxylic acid group. An INDEPENDENT CLAIM is also included for an ordered copolymer blend composition with periodic nanostructures, where the copolymer blend is obtained in bulk quantity from the composition comprising the block copolymer and the preformed non-polymeric additive, where the preformed non-polymeric additive comprises an inorganic core with many hydrogen bonding sites on it capable of forming hydrogen bonding with the block copolymer.