Debdas Ray has received his PhD degree in 2008 from the Indian Institute of Technology Kanpur, India. His doctoral research was conducted under the supervision of Professor Parimal K. Bharadwaj, and focused on designing various supramolecular receptors for sensing and nonlinear optical studies. He then carried out first postdoctoral research in Professor Dario M. Bassani’s Group at University of Bordeaux1 (2009-2011), where he focused on the synthesis of fullerene (C60) and anthracene monolayers on silicon surfaces as well as various fullerene derivatives having hydrogen-bonding recognition unit for organic electronics. He did his second postdoctoral research with Professor Ivan Aprahamian (2011-2012) at Dartmouth College, USA, where he focused on hydrazine-based rotary switches for coordination-coupled proton relay mimicking proton translocation in biological systems. His third postdoctoral research was carried out in Professor Takashi Nakanishi’s group (2012-2013) at National Institute for Materials Science (NIMS), Japan, where he focused on neutral solvent-free liquid organometallic complexes of platinum(II) and iridium(III) for optoelectronic applications. He joined the Department of Chemistry at Shiv Nadar University as an Assistant Professor in July 2013. See full CV
- Physical Methods in Chemistry
- Coordination and Bio-inorganic Chemistry
- Supramolecular Chemistry
- Principles of Fluorescence and applications
- Nuclear magnetic resonance spectroscopy
- Physical organic Chemistry
Photo-functional Materials –Triplet Management
Research in the group focuses on using modular, and tunable organic donor-acceptor conjugates in the development of structurally simple adaptive photo-functional materials, e.g., dual emitter (singlet/triplet harvesting), white-light emitter (singlet-triplet harvesting), thermo-phosphors (triplet harvesting), molecular switches, and responsive emitters. For this purpose we utilize synthetic organic and organometallic chemistry in conjunction with advanced spectroscopic methods and computational calculations.
Our interest in controlling non-radiative pathways above room-temperature and compensate its emission loss via structural change has driven us to the development of new donor-acceptor conjugates that can show thermally enhanced photoluminescence (TEPL) with increasing temperature (above RT). These novel systems are expected to form the basis of singlet and triplet harvesting that can be used in applications ranging from solar energy harvesting (solar cell via TEPL converter), high energy-efficient organic light-emitting diodes (OLEDs), security-imaging, sensors, sensitizers, photodynamic therapy to bio-imaging. In this regard, the group is also developing materials that can respond to circularly polarised light (CPL) for CPL-OLEDs.
Our group also focuses on amorphous organic materials that can show persistent photoluminescence. These materials have potential applications in security-imaging, invisible security ink, data encryption/decryption, anticounterfitting, night vission servaillance, sensors, bioimaging.
The group is also developing new allosteric switches based on coumarin-imidazole conjugate (i.e., conformational switches) that can be used in sensing, biological detection and among others.
2018 ACS Publications Forum: Expanding Frontiers in Chemical Science, November 1, 2018, Banaras Hindu University (BHU), Varanasi.
2018 School of Physical Science, JNU, 12th September, 2018.
2017 Modulation of Emission Signaling Pathway through Allosteric control, TIFR Mumbai, July, 19-21, 2017.
2015 Fluorescence Spectroscopy and its Application, IIT Kanpur, November, 23-28, 2015.
2014 "A multistep switching cascade of hydrazone-based switches through coordination coupled proton relays"- Invited lecture in Calcutta University, April 7, 2014.
2014 National Seminar on Crystallography 43A, March 28-30, 2014, Indian Institute of Science Education and Research (IISER) Mohali.
2010 Supramolecular Control of Photo Reaction in Solid (Poster Presentation)-XXIIIrd IUPAC International Symposium on Photochemistry, July 11-16, 2010, Ferrara, Italy.
2010 GDR “Electronic Organic” held in November 23-24, 2010, Bordeaux 1, France.
2007 Cation and Anion induced two-photon absorption in synthesized organic ligands (Lecture), Chemfest, Department of Chemistry, Indian Institute of Technology Kanpur, 2nd March, 2007.
Research grant of ~26 Lakhs (INR) from SERB-DST, India Govt.
Research grant of ~ 50 Lakha (INR) (Four year) from SERB-DST, India Govt.
Research grant of ~ 25 Lakhs (INR) from BRNS-DAE, India
Reviewer of International journals published by ACS, Elsevier, RSC etc.
Reviewer of Science and Engineering Research Board (SERB), Govt. of India
Featured in “Faculty in Spotlight” of Shiv Nadar University
Postdoctoral fellowship at the National Institute of Materials Science, Japan
Postdoctoral fellowship at the Dartmouth College, New Hamshire, USA
Postdoctoral fellowship at the Bordeaux University, France
Senior Research Fellowship, Council of Scientific and Industrial Research, India
Junior Research Fellowship, Council of Scientific and Industrial Research, India