Amarnath Maitra Ph.D.

Maitra, Amarnath
Position Department / Business Unit
Dept. of Chemistry
Institution Disciplines
University of Delhi Chemistry Nanobiotechnology
City State / Provence
Delhi FGN
Country Website

Prof. Amarnath Maitra has successfully targeted drug loaded nanoparticles to brain tissue which are being used now for targeted delivery of 5-fluorouracil. He has also developed smart hydrogel nanoparticles for oral delivery of insulin which is under the process of further improvements.

Using hollow gold nanoparticles and entrapping enzymes in the cavity, Dr Maitra has demonstrated that it has been possible to apply these systems for enzyme therapy (ADEPT). The L-asparaginase containing hollow gold nanoparticles are being tested at the All India Institute of Medical Sciences, New Delhi for suppressing leukemic
cell growth in vitro and in vivo.

Over the last 12 years he has been doing research on targeted delivery of drugs and genes using ceramic as well as polymeric nanoparticles as carriers. Dr Maitra has supervised the Ph.D. works of 34 students and several M.Phil students.

Career Highlights

He is now Adjunct Professor in the Department of Biological Chemistry of Indian Association for the Cultivation of Science, Kolkata, India where he is going to join soon as INSA Emeritus Professor also. Professor Maitra is associated with the Nanotechnology programme of the country as various capacities.  Currently he is Visiting Scientist at the Department of Pathology Johns Hopkins Medical Institute, Baltimore, USA where he developed oral delivery systems for poorly water soluble anticancer drugs.

Professor Maitra has been invited for three months as an Adviser of Nanotec Centre of Thailand Government where he would join soon. The earlier President of India, Dr APJ Abdul Kalam mentioned the contributions of Professor Maitra in Nanotechnology research in the country in his several talks. About a dozen of Universities in India who are going to open Nanotechnology Centre have appointed Prof Maitra as member of their Advisory Boards.

Amarnath Maitra (born in February 1943) received his M.Sc. in Chemistry from Calcutta University in 1964 and Ph.D. from Jadavpur University, Kolkata in 1971. His Ph.D. topic was on Boron and Silicon Heterocycles. Prof Maitra joined the University of Delhi in 1972 and did research in the areas of metal corrosion, passivation and inhibition, NMR relaxation and self diffusion , quadrupolar relaxation of electrolytic solutions and microemulsuions, structural studies of microemulsions by FTIR spectroscopy, dielectric spectroscopy and positron annhilation techniques, preparation of ultralow size nanoparticles using microemulsions as media such as high Tc Superconductors, Titanium Dioxides, Silver halides, and other ceramic nanoparticles.

Prof Maitra was invited as Visiting Professor in Lund University (Sweden) in 1987 and in Basel University (Switzerland) in 1991. He was also invited as Visiting Scientist at the laboratory of Prof D.O.Shah in U.S.A. in 1989 and under INSA exchange programme at the Polish Academy of Science, Krakow (Poland) in 1993 and at the School of Pharmacy, University of London in 2004.


Professor Maitra has been granted five US patents, one EU patents and 11 Indian patents on targeted drug and gene delivery.

Prof. Maitra is fellow of the Indian National Science Academy (INSA) and recipient of MRSI and other prestigious awards.

Dr Maitra is a council member of the International Association for Colloid and Interface Science and is a member of The Controlled Release Society, USA. He has used calcium phosphate nanoparticles as non-viral vectors for efficient delivery of genes, which is a break through technology on non-viral vector gene delivery and it has been sold to a US based pharmaceutical company. The other technologies, which have been transferred to Indian pharmas, are hydrogel nanopartucles for delivery of hydrophilic drugs, nanoparticles mediated delivery of paclitaxel, low toxic AmphortericinB, long residing ophthalmic delivery and antibacterial stable dispersed silver nanoparticles. In addition


Dekker Encyclopedia of Nanoscience and Nanotechnology

Important Articles

Dr Maitra was the editor of the Journal of Surface Science and Technology. He was member of the International Advisory Board of the Journal of Colloid and Interface Science.

By this Researcher

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