1. Photochemistry of dyes:
Dye supramolecules are designed with electron donor or acceptor. These systems are used to improve their functional characters such as NIR absorption and emission, two-photon absorption, time-resolve fluorescent emission, and ratio-fluorescent emission, with large Stokes Shift and good stabilities. Digital printings and photo-electron conversion are their current applications.

2. Fluorescent dyes for bio-imaging and bio-labeling:
Novel fluorescent dyes and their photo-induced electron transfer, charge transfer and energy transfer are investigated. These dyes are used as chemosensor for bio-analysis, environmental detection, and medical diagnosis.

3. Clean preparation technology for fine chemicals
New and environment-friendly organic synthesis routes, technology and product engineering are developed.