Abstract: Methods and compositions are provided, where oligopeptides are produced on a transparent surface while retaining transparency by the cyclical addition of protected monomers. Reagents are specifically selected to allow for efficient reproducible addition, while maintaining transparency of the support. Linkers are provided which permit retention of the oligopeptide to the surface or release of the oligopeptide at completion of the preparation of the oligopeptide. The oligopeptide bound to the support finds use in diagnostic assays, as well as other application, while the free oligopeptides may be used in a variety of ways.