This invention provides method and apparatus for performing chemical and biochemical reactions in solution using in situ generated photo-products as reagent or co-reagent. In some embodiments, the present invention provides methods and devices for generating one or more selected multimers at specific...http://www.google.com.hk/patents/US7491680?utm_source=gb-gplus-share專利 US7491680 - Device for chemical and biochemical reactions using photo-generated reagents