Department
of Chemistry
Indian Institute of Technology Guwahati
Guwahati - 781 039, Assam, INDIA
Tel:
(0361)-258 2313(O)
(0361)-258 2335(Lab)
Email:gdas@iitg.ernet.in
g.das@mailcity.com
PERSONAL PROFILE
2008-till date, Associate Professor, Department of Chemistry, Indian Institute of Technology Guwahati, Assam, India
2004-2008, Assistant Professor, Department of Chemistry, Indian Institute of Technology Guwahati, Assam, India
2003-2004, Lecturer, Department of Chemistry, Birla Institute of Technology and Science, Pilani, Rajasthan, India
1999-2003, Postdoctoral Research Associate, University of Geneva, Switzerland
1994-1999, Doctor of Philosophy, Indian Institute of Technology, Kanpur, India
1991-1993, Master of Science, Calcutta University, India
1988-1991, Bachelor of Science, Calcutta University, India
AWARD/HONOR 1. National Eligibility Test (NET), November 1993.
Council of Scientific and Industrial Research (CSIR).
2. Fellowship of Swiss National Science Foundation, November 1999.
3. Recognized by the Chemical Abstract Services (CAS), USA and American Chemical Society (ACS) as author of the "Most Requested Journal Article� in 2004.
EDITORIAL BOARD MEMBER
1. Scientific Journals International
2. Canadian Journal of Pure and Applied Science
SPONSORED PROJECTS
Title: Model studies on the function of supramolecular architecture in the processes of biomineralization.
Sponsor: Council of Scientific and Industrial Research, New Delhi, India
Period: 2005- 2008
Title: Precursor synthesis of inorganic mineral through complexes of mixed donor ligands.
Sponsor: Department of Science and Technology, New Delhi, India
Period: 2008- 2011
Title: Synthesis, characterization of metal oxides and their application to wastewater treatment.
Sponsor: Council of Scientific and Industrial Research, New Delhi, India
Period: 2008- 2011
RESEARCH INTERESTS
The research theme is to explore the broad areas of Supramolecular Chemistry which includes:
Biomineralization and Biomimetic Material Chemistry
Meso-structured Inorganic-Organic Materials
Bioorganic Chemistry
Molecular Photonic and Eletronic Devices
Fluorescent / Luminesccent Sensors and Switches
Langmuir-Blodgett film study of Tailor-made Amiphiphiles.
Self-assembled Supramolucular Chemistry
RESEARCH ACTIVITY
At IIT Guwahati we are currently woriking on :
� Model studies on the function of supramolecular architecture in the process of biomineralization. We are engaged in the study of the mechanism of biomineralization which in turn will help to synthesize new bio-materials for bio-medical engineering. These new materials will have pre-defined structure and function.
� We are synthesizing fluorescent / luminescent sensors and switches and studying their photophysical / photochemical properties.
� We are also engaged in designing and synthesizing new amphiphiles and study their surface properties with the help of Langmuir-Blodgett techniques. These LB films are also used for making new molecular electronic devices.
ADMINISTRITIVE ACTIVITY
DPPC Secretary, Environment Center, 2007-till date
DUPC Secretary, Chemistry Department, 2008-till date
Associate Warden, Siang Hostel, 2009-till date
Vice-Chairman GATE, 2009-2010, IIT Guwahati
LIST OF PUBLICATIONS 1. Synthesis and Uses of Macrobicyclic Cryptands: From Complexation of Transition Metal ions to Molecular Devices.
2. Synthesis and X-ray Structures of Mixed Ligand Salicylaldehyde
Complexes of Mn(III), Fe(III) and Cu(II) Ions:
3. Langmuir Films of a Cryptand-Based Amphiphiles at the Air-Water Interface.
4. Osmium Mediated Selective Aromatic Thiolation Reaction
in the Complexes[OS(II){o-SC6H3(R)N=NC5H4N}2].
5. A Comparative Study of Cryptand Based (Triple-Head-Triple-Tail)
Amphiphiles at the Air-Water Interface.
6. Facile One-Pot Synthesis of Macrobicyclic/Macrotricyclic
Cryptands: Effect of Reactant Concentrations.
7. Transition Metal Cryptate-Enhanced Fluorscence in a Trianthroyl
Cryptand: Effect of Spacer on the PET process.
8. Topological Diversity of Artificial beta-Barrel in Water.
9. Synthesis and Structure of the [Mn(IV)(biguanide)3]4+ ion: the Simplest Source for water-stable Manganese(IV).
10. Beta-Fibrillogenesis by Rigid-Rod beta-Barrels:Hierarchical Preorganization Beyond Microns
11. Toward Catalytic Rigid-Rod beta-Barrels: A Hexamer with Multiple Histidines
12. Transmembrane pores formed by synthetic p-octiphenyl beta-barrels with internal carboxylate clusters.
13. Photophysical studies of cryptand based fluorophore systems in different environments.
14. Binding of Organic Anions by Synthetic Supramolecular Metallopores with Internal Mg(II)-Aspartate Complexes.
15. On the Importance of Intermediate Internal Charge Repulsion for the Synthesis of Multifunctional Pores.
16. Fluorimetric Detection of Enzyme Activity with Synthetic Supramolecular Pores.
17. Bioorganic Chemistry of Rigid-Rod Molecules: Adventures with p-Oligophenyls.
18. Synthetic Multifunctional Pores: Deletion and Inversion of Anion/Cation Selectivity Using pM and pH.
19. Enzyme Screening with Synthetic Multifunctional Pores:Focus on Biopolymers
20. Substrate-Independent Transduction of Chromophore-Free Organic and Biomolecular Transformations into Color
21. A one-pot synthesis and self assembled superstructure of an organic salt of a 1,5-benzodiazepine derivative
22. One-pot efficient green synthesis of 1,4-Dihydro-quinoxaline-2,3-dione derivatives
23. Low-Molecular-Weight Poly-Carboxylate as Crystal Growth Modifier in Biomineralization
24. CuO Micro Plates from a 3D Metallo-Organic Framework (MOF) of a Binary Copper(II) Complex of N,N-bis(2-hydroxyethyl)glycine
25. ZnO Nano Particles from Metal-Organic Framework of Zn(II)- Metallacycles
26. Intermolecular Hydrogen Bonded and Self-assembled beta-pleated Sheet Structures of beta-sulfidocarbonyls
27. Self-assembled Superstructure of Xanthene Derivatives
28. Macroporous Metal Oxides as an Efficient Heterogeneous Catalyst
for Various Organic Transformations - A Comparative Study
29. Molecular, Supramolecular Structure and Catalytic Activity of Transition Metal Complexes of Phenoxy Acetic acid derivatives
30. Solid State Synthesis and Hierarchical Supramolecular Self-assembly of Organic Salt Cocrystals
31. N,N�-Bis(aryl)pyridine-2,6-dicarboxamide complexes of ruthenium: Synthesis, structure and redox properties
32. Tripodal naphthalene ether ligand: Solid-state anion recognition and
Fluorescence studies
33. Biomimetic Modulation of Crystal Morphology using Gel: From Nano
to Micron Scale Architectures
34. Aromatic guest inclusion by a tripodal ligand: Fluorescence and
Structural studies
35. Trimesic acid coated alumina: An efficient multi-cyclic adsorbent for toxic Cu(II)
36. Syntheses and regiochemistry of enol addition to 9-phenyl-9H-xanthen-9-ol
37. Ruthenium monoterpyridine complexes with 2,6-bis(benzimidazol-2-yl)pyridine: Synthesis, Spectral properties and structure
38. A comparative metal ion adsorption study by Trimesic acid coated alumina: A potent adsorbent
39. Ruthenium monoterpyridine complexes with 2, 6-bis(benzoxazol-2-
yl)pyridine as ancillary ligand: Synthesis, structure and spectral studies
40. Molecular to Supramolecular Structure: Influence of Coordination Environment in Azo-dye Complexes
41. An expeditious one-pot solvent-free synthesis of benzimidazole derivatives
42. A mechanistic insight into enhanced and selective phosphate adsorption on a coated carboxylated surface.
43. A mechanistic insight into enhanced and selective phosphate adsorption on a coated carboxylated surface.
44. 3D Solid-state Network from Hierarchical Supramolecular Self-assembly of Transition Metal Complexes of Pyridine Based Ligand.
45. An Efficient Phosphate Sensor: Tripodal Quinoline Excimer Transduction.
46. Lactic Acid Bacterial Extract as a Biogenic Mineral Growth Modifier
REVIEW
1. Synthesis and Study of Cu(II)-Thiolato Complexes: Bioinorganic
Perspectives.
2. "Never Mind a Barrel"
INVITED TALK
1. Hierarchical Self-Organization of Rigid-Rod Molecules: From Tertiary beta-Barrel to Quarternary beta-Fibril Structures.
2. Practical Fluorimetric Sensing Applications of Rigid-Rod beta-Barrel Ion Channels.
3. Applications of Gaussian software
4. Fluorometric Detection of Enzyme Activity with Synthetic Supramolecular Artificial beta-Barrel
5. Langmuir-Blodgett Films and Their Use in Molecular Electronics
6. Photo-induced electron transfer (PET) sensors, switches and logic gates
7. Natural and Synthetic Polycarboxylate as a Crystal Growth Modifier of Calcium and Barium Biominerals
8. Biomineralization: Future of Inorganic Chemistry
9. Luminescence Spectroscopy: Application in analytical chemistry
10. Synthesis of Inorganic Mineral through Precursor Complexes
11. Fluroescence Spectroscopy: Princple and Application
REPORT
1. Synthesis and Characterization of Cu(II) and Ni(II) complexes
with Heteroditopic Cryptands: Crystal Structure of a
2. Fluorescent Signaling with Transition and Inner-Transition
Metal Ions.
3. En Route to Intra-Toroidal Catalysis
4. Hierarchical Self-Organization of Rigid-Rod Molecules:
From Tertiary beta-Barrel to Quartenary beta-Fibril Structures
5. A Barrel-Stave Supramolecule with Ion Channel, Hydrolase, and Fibrillogenic Activity
6. Green Synthesis of 3D-Polymeric Metallo-Organic Framework of Zn(II)
Metallocycles with 1D "Zig-Zag" Water Chain
7. A One-pot Synthesis and Self-assembled Superstructure of Organic salts of a 1,5-benzodiazepine derivative.
8. Spectroscopic and Structural Studies of Supramolecular Host-Guest System.
9. Lactic Acid Bacterial Extract as a Biogenic Mineral Growth Modifier.
10. Studies of 2-alkyl Substituted Benzimidazole Amphiphiles.
WORKSHOP PRESENTATIONS
1. DST sponsored National Workshop on the Art of the
X-ray Crystallography held on March 31-April 1, 1995.
2. HPLC and EM users Workshop held on March 15,
1996.
3. Swiss National Chemical Society sponsored Workshop on the Supramolecular Functional Materials : Scientific Communication held on May 11, 2001.
ORAL PRESENTATIONS
1. Modern Trends in Inorganic Chemistry (MTIC- VII) held on
2. 8th National Conference on Surfactants, Emulsions
and Bio-Colloids (NATCOSEB-VIII) held on
3. Universtiy Conference of Western Switzerland on
"Metal Ions In Biological Systems" held on
4. Swiss National Chemical Society sponsored Workshop on the Supramolecular Functional Materials : Scientific Communication held on STUDENTS
Ph. D.
M. Sc. Project
Summer Project
TEACHING EXPERIENCE
In BITS, Pilani
In IIT Guwahati
D.K.Chand, P.Ghosh, R.Shukla, S.Sengupta,
G.Das,
P.Bandyopadhyay, P.K.Bharadwaj.
Proc. Ind. Acad. Sci. (Chem. Sci), 229, 108, 1996.
Reactivity of the Mn(III)Complex Towards Primary Monoamines and Catalytic Epoxidation of Olefins by the Cu(II)Complex.
G.Das,
R.Shukla, S.Mandal, R.Singh, P.K. Bharadwaj.
Ionrg. Chem. 323, 36, 1997.
G.Das,
P.Ghosh, P.K.Bharadwaj, U.Singh, R.A.Singh.
Langmuir, 3582, 13, 1997.
Synthesis,Spectroscopic Characterization,Electron-Transfer Properties and Crystal Structure of the Complex where R=H.
B.K.Santra, P.Munshi, G.Das,
P.K.Bharadwaj, G.K.Lahiri.
Polyhedron, 617, 18, 1999.
G.Das,
P.K.Bharadwaj, U.Singh, R.A.Singh, R.J.Butcher.
Langmuir, 1910, 16, 2000.
G.Das,
P.Tripathi, A,Tripathi, P.K.Bharadwaj.
Tetrahedron, 1501, 56, 2000.
G.Das,
P.K.Bharadwaj, M.B.Roy, S.Ghosh.
J. Photoch. Photobio. A: Chemistry, 7, 135(1), 2000.
G.Das,
S. Matile.
Chirality, 170, 13, 2001.
G.Das,
P.K.Bharadwaj, D.Ghosh, B.Chaudhuri, R.Banerjee.
Chem. Commun. 323, 2001.
G.Das, L.Quali, M.Adrian, B.Baumeister, K.J.Wilkinson, S.Matile.
Angew. Chem. Int. Ed. Engl. 4657, 40(24), 2001.
G.Das,
N.Sakai, S.Matile.
Chirality, 18, 14, 2002.
Regulation of ion transport by pH and Mg(II)-complexed 8-aminonaphthalene-1,3,6-trisulfonate
G.Das, S.Matile.
Proc. Natl. Acad. Sci. U.S.A. 5183, 99(8), 2002.
G.Das, P.K.Bharadwaj, M.Basu Roy, S.Ghosh.
Chemical Physics 277, 145, 2002.
G.Das, H.Onouchi, E.Yashima, N. Sakai, S.Matile.
ChemBioChem 1089, 3, 2002.
B.Baumeister, A.Som,G.Das, N.Sakai, F.Vilbois, D.Gerard, S.Shahi, S.Matile.
Helv. Chim. Acta 2740, 85, 2002.
G.Das, P.Talukdar, S.Matile.
Science, 1600, 298, 2002.
Y.Baudry, B.Baumeister, G.Das, D.Gerard, S.Matile, N.Sakai, A.Som, N.Sorde, P.Talukdar.
Chimia, 667-671, 56, 2002.
N.Sakai, N. Sorde, G.Das, P. Perrottet, D.Gerard, S.Matile.
Org. Biomol.Chem, 1226-1231, 1(7), 2003.
N. Sorde, G.Das, S.Matile.
Proc. Natl. Acad. Sci. U.S.A. 11964, 100(21), 2003.
G.Das, S.Matile.
Chemistry - A European Journal 2936-2944, 12(11), 2006.
Harjyoti Thakuria, Avijit Pramanik, Ballav Moni Borah, G.Das.
Tetrahedron Lett. 3135, 47(18), 2006.
Harjyoti Thakuria, G.Das.
J. Chem. Sci. 425-428. 118(5), 2006.
Ballav Moni Borah, Bhaskar Jyoti Bhuyan, G.Das.
J. Chem. Sci. 519-524, 118(6), 2006.
Harjyoti Thakuria, G.Das.
Polyhedrion 149-153, 26(1), 2007.
Harjyoti Thakuria, Ballav Moni Borah, G.Das.
Eur. J. Inorg. Chem. 524-529, 4, 2007.
S. Hussain, G.Das, M. K. Chaudhuri.
J. Mol. Stur. 190-196, 837(1-3), 2007.
V. Kavala, S. Murru, B.K.Patel, G.Das.
J. Chem. Crystallogr. 527-535, 37(8), 2007.
H.Thakuria, B. M. Borah, G.Das.
J. Mol. Cat.A Chemical 1-10, 274, 2007.
A. Pramanik, S. Abbina, G.Das.
Polyhedron 5225-5234. 26(18), 2007.
H.Thakuria, B. M. Borah, A. Pramanik, G.Das.
J. Chem. Crystallogr. 807-816, 37(12), 2007.
M. Dasgupta, S. Nag, G.Das, M. Nethaji, S. Bhattacharya.
Polyhedron 139-150, 27(1), 2008.
A.Pramanik, M.Bhuyan, R.Choudhury, G.Das.
J. Mol. Struct. 88-95, 879, 2008.
B. M. Borah, G.Das.
Mater Sci Eng C 1173-1182, 28(7), 2008.
A. Pramanik, M. Bhuyan, G.Das.
J. Photoch. Photobio. A: Chemistry 149-155, 197(2-3), 2008.
B. Saha, S. Chakrabortya, G.Das.
J. Colloid. Interf. Sci. 30-39, 320(1), 2008.
V. Kavala, S. Murru, G.Das, B. K. Patel.
Terahedron 3960-3965, 64(18), 2008.
A. Singh, B. Chetia, S. M. Mobin, G.Das, P. K. Iyer, B. Mondal.
Polyhedron 1983-1988, 27(8), 2008.
B. Saha, S. Chakrabortya, G.Das.
J. Colloid. Interf. Sci. 26-32, 323(1), 2008.
A. Singh, G.Das, B. Mondal.
Polyhedron 2563-2568, 27(12), 2008.
A. Pramanik, G.Das.
Cryst. Growth. Des. 3107-3113, 8(8), 2008.
H. Thakuria, G.Das.
ARKIVOC, 321-328, XV, 2008.
A. Singh, A. Pramanik, G.Das, B. Mondal.
Organometallics 6403-6404, 27, 2008.
B. Saha, S. Chakrabortya, G.Das.
J. Colloid. Interf. Sci. 21-26, 331, 2009.
A. Pramanik, G.Das.
J. Chem. Crystallogr. xxx-xxx, xx(xx), 2009.
A. Pramanik, G.Das.
Tetrahedron, xxxx-xxxx, xx(x), 2009.
B. M. Borah, A. Singh, A. Ramesh, G.Das.
J. Cryst. Growth, xxxx-xxxx, xx(x), 2009.
S.Mandal, G.Das,
R.Shukla, R.Singh, P.K.Bharadwaj.
Coord. Chem. Rev. 160, 191, 1997.
B.Baumeister, G.Das, N.Sakai, S. Matile.
Chimia,55(4),301-304,2001.
"Lipids and Biomembranes: New Technologies" Octobre 2-5, 2002, Davos, Switzerland.
Fall Meeting of the Swiss Chemical Society, Octobre 17, 2002, Basel Switzerland.
UGC refresher course on �Theoretical and Computational Chemistry�, December 8-28, 2003,
Birla Institute of Technology and Science, Pilani, Rajasthan, India.
National Symposium on Chemistry at the Inorganic and Organic Interphase
December 6-7, 2004, IIT Guwahati, India.
QIP Short term course on �Semi-conducting organics as future generation electro-optical materials
June 20-24, 2005, IIT Guwahati, India.
QIP Short term course on �Semi-conducting organics as future generation electro-optical materials
June 20-24, 2005, IIT Guwahati, India.
Modern Trends in Inorganic Chemistry (MTIC-XI) December 8-10, 2005, IIT Delhi, India.
Kalyani University, Kalyani, West Bengal, June 2006.
UGC refresher course on �Current Trends in Chemistry with special emphasis on Analytical Techniques�, March 11-31, 2007.
Gauhati University, Guwahati, Assam, India.
Discussion meeting on “Crystal Engineering and Noncovalent Interactions: Contemporary Themes and Futuristic Developments” February 22-25, 2009.
Orange County, Coorg, India.
UGC sponsored course on “2nd Scholars’ Programme in Sciences (II)”
March 25, 2009
Gauhati University, Guwahati, Assam, India.
Strongly Bonded Cu(II) OH2 Inclusion
Complex.
G.Das,
D.K.Chand, P.K.Bharadwaj.
Symposium on Modern Trends in Inorganic
Chemistry, December 4-6, 1997.
Department of Chemistry, Indian Institute
of Technology, Kanpur, India.
P.Ghosh, G.Das,
P.K.Bharadwaj.
Symposium on Frontiers in Inorganic
Chemistry.
Department of Inorganic and Physical
Chemistry, Indian Institute of Science, Bangalore, India.
B.Baumeister, N.Sakai, G.Das, S. Matile
National Research Program "Supramolecular Functional Materials", Kick-off Meeting, 30.06.2000
Berne, Switzerland.
G.Das, L.Quali, B.Baumeister, K.J.Wilkinson, S.Matile.
Swiss Chemical Society Fall Meeting 2001, 12.10.2001
Zurich, Switzerland.
B.Baumeister, G.Das, N.Sakai, A. Som, D.Gerard, S.Matile.
National Research Program "Supramolecular Functional Materials" 23.10.2001
Berne, Switzerland.
Harjyoti Thakuria, Ballav Moni Borah, G.Das.
Modern Trends in Inorganic Chemistry (MTIC-XI) December 8-10, 2005, IIT Delhi, India.
Harjyoti Thakuria, Avijit Pramanik, Ballav Moni Borah, G.Das.
2nd Mid Year Symposium of CRSI, 21st July 2007, IIT Guwahati, India.
Avijit Pramanik,G.Das.
Modern Trends in Inorganic Chemistry (MTIC-XII) December 6-8, 2007, IIT Madras, India.
Ballav Moni Borah, Atul K. Singh, Aiyagari Ramesh, G.Das.
CRSI National Symposium in Chemistry (NSC-10), February 1-3, IISc Bangalore, India.
Bimlesh Ojha, G.Das.
CRSI National Symposium in Chemistry (NSC-11), February 6-8, NCL Pune, India.
Department of Chemistry, Indian Institute
of Technology, Kanpur, India.
Central Drug Research Institute (CDRI),
Lucknow, India.
Berne, Switzerland.
December 4-6, 1997.
Department of Chemistry, Indian
Institute of Technology, Kanpur, India.
October 18-20,1997.
Sambalpur University, Orissa,India.
September 11-14, 2000
Champery, Switzerland.
May 11, 2001.
Berne, Switzerland.
1. Mr. Ballav Moni Borah 2004
2. Mr. Avijit Paramanik 2005
3. Mr. Saitanya K. Bharadwaj 2005 (Co-guide)
4. Mr. Harjyoti Thakuria 2006
5. Mr. Bedabrata Saha 2006
6. Mr. Bimlesh Ojha 2006
7. Mr. Sandeep Kr. Dey 2007
8. Mr. Arghya Basu 2008
1. Mr. Priyanshu Sharma 2003
2. Ms. Deepa Sritharan 2004
3. Mr. R. Pritish Narayanan 2004
4. Mr. Bhaskar Jyoti Bhuyan 2005
5. Ms. Mouchumi Bhuyan 2006
6. Mr. Srinivas Abbina 2006
7. Ms. Hema Lakshmi Puppala 2006
8. Mr. Mrinmoy Saha 2007
9. Mr. Subhojit Majumdar 2008
10. Mr. Nikhil Kr. Mondal 2008
11. Mr. Sourav Das 2009
12. Ms. Madhubrata Ghosh 2009
13. Ms. Soma Dey 2009
1. Mr. Anup Malakar 2005
2. Mr. Dipankar Saha 2006
3. Mr. Rajib Choudhury 2006
4. Mr. Priyatosh Mandal 2007
5. Mr. Pallab Mondal 2007
6. Mr. Nilanjal Mishra 2007
7. Ms. Dimpy Sharma 2007
8. Mr. Arijit Mukherjee 2008
9. Mr. Partha Pratim Das 2008
10. Mr. Sourav Das 2008
11. Mr. Subrata Jana 2009
12. Mr. Subrata Guchait 2009
13. Mr. Shyam Sundar Samata 2009
14. Mr. Rajdeo Das 2009
1. Chemistry � I (B. Tech. course)
2 Chemistry � II (B. Tech. course)
3. Chemistry Laboratory (B. Tech. course)
4. Stereochemistry and reaction mechanism (M. Sc.course)
5. Stereoselective organic synthesis (M. Sc. course)
6. Structure and reactivity of organic compounds (M. Sc. course)
7. Physical Organic Chemistry (Ph. D. Course)
1. CH-002 Preparatory Chemistry (pre-B. Tech course)
2. CH-101 General Chemistry (B. Tech. course)
3. CH-110 General Chemistry Laboratory (B. Tech. course)
4. CH-201 Prelimineries of Inorganic Chemistry (M. Sc course)
5. CH-410 Transition and Non-transition Metal Chemistry (M. Sc. course)
6. CH-411 Inorganic Reaction Mechanism and Organometallics (M. Sc. course)
7. CH-415 Inorganic Chemistry Laboratory (M. Sc. course)
8. CH-611 Bioinorganic Chemistry (M. Sc. course)
9. CH 605 Applied Crystallography (Ph. D. Course)
10. CH-603 Supramolecules: Concept and Applications (Ph. D. Course)
11. CH-616 Bioinorgnic (Ph. D. Course)
11. CH-500 Graduate Seminar (M. Sc. Course)
