Automated micromachines for sequential and parallel reactions

ORGN 290

Hsian-Rong Tseng, hrtseng@mednet.ucla.edu, Crump Institute for Molecular Imaging and Department of Molecular and Medical Pharmacology, UCLA, 700 westwood plaza, 1320 crump institute, Los Angeles, CA 90095
During the past century, organic chemists carried out reactions and studied reaction mechanisms using macroscopic apparatus. Although there have been significant progresses in finding new reactions and understanding mechanisms, these macroscopic settings and their associated operation techniques have barely changed. Microfluidic devices, a special category of micromachines, exhibiting intrinsic advantages of reagents economy, control precision, high throughput, scalability and digital controllability are an emerging technology for studying organic reactions at miniaturized fashion. In this presentation, I would like to introduce two new types of microfluidic devices for performing sequential syntheses of positron emission tomography (PET) imaging probes and parallel screening of an in situ click chemical library. These results constitute a proof of principle for conducting sequential and parallel reactions on the nanogram to picogram scale in an automated fashion. Recently, further integrated microfluidic devices capable of wider exploration beyond a single application in monolithic devices are under development.