A synthetic strategy for the creation of large scale chemical diversity. Solid-phase chemistry, photolabile protecting groups, and photolithography are used to achieve light-directed spatially-addressable parallel chemical synthesis. Binary masking techniques are utilized in one embodiment. A reactor...http://www.google.es/patents/US5744305?utm_source=gb-gplus-sharePatente US5744305 - Arrays of materials attached to a substrate
