| http://www.w3.org/ns/prov#value | - In the case of an ordered porous or mesoporous dielectric matrix, the porogen is frequently referred to as a ???template.??? One type of ordered porogen, for example, is a block copolymer that has chemically distinct components (e.g. PEO polyethylene oxide and PPO polypropylene oxide) that segregate into separate phases.
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