Dihedral angle controlled functionalized luminescence materials for optoelectronic applications | Department of Chemistry

Dihedral angle controlled functionalized luminescence materials for optoelectronic applications

Funding Agency:DST-SERB

Principal Investigator:Dr. Debdas ray

Duration: 4 Years

Objectives & Goals:

We have been developing low cost and high efficient solid state light emitter, particularly in the context of the search for single-component white-light emitter for advanced energy applications, such as WOLED, sensors. The group is also developing thermographic organic phosphor materials for safety security, document counter fitting, night vission surveillance, and theraml imaging. The main focus with this family will be the dihedral angle controlled photophysical property along with intermolecular non covalent interactions in organic electron donor-acceptor chromophore, so the molecules can be used as blue/red and white emitters in advanced energy applications.

Key Achievements:

We have developed single-component white light emitter which shows non-zero quenching of photoluminescence (fluorescence and phosphorescence) at higher temperature (100 oC). These materials have immense important in the high power OLED applications, thermographic phosphor (temperature sensor), safety security, night vision surveillance. Further, we have developed materials whose photophysical property can be tuned mechanically to produce panchromatic emission covering 400-800 nm (white-light emission) in the solid state. In the same context, we have successfully developed deep blue organic phosphorescence materials which are extremely difficult to make as high band gap.

Soon results will be published in reputed international journals.


Associate Professor


Indranil Bhattacharjee
PhD Chemistry
Class of: 
Harsh Bhatia
PhD Chemistry
Class of: 
Nirmalya Acharya
PhD Chemistry
Class of: