List of publications:

 2018

Kangkana Deka, J Kumar, A Bhowmick, S Banu, D K Das,Silver nanoparticle modified Pt  electrode as voltammetric and electrochemical impedance sensor for hydrogen peroxide in live biological cells, Indian J Chem, 57A (2018) 485-489.

Kangkana Deka, D K Das, Nickelhexacyanoferrate modified Glassy Carbon electrode as voltammetric and electrochemical impedance spectroscopic sensor for thiocyanate ion, Chemistry Select, 3 (2018) 481-485.

Smita Sarma, A Bhowmik, M J Sarma, S Banu, P Phukan, D K Das, Condensation product of 2-hydroxy-1-napthaldehyde and 2-aminophenol:Selective fluorescent sensor for Al³⁺ ion. Inorganica Chimica Acta, 469 (2018) 202-208

2017

D K Das, Kangkana Deka, Schiff base modified Pt electrode as sensor for Al(III) and Pb(II), Indian J Chemistry A, 56A (2017) 832-837.

D K Das, Jutika Kumar, A Bhowmick, P K Bhattacharyya, S Banu. 2-Hydroxyacetophenone and ethylenediamine   condensed Schiff base: Fluorescent sensor for Al³⁺ and PO₄^3-, biological cell imaging and INHIBIT logic gate. Inorganica Chimica Acta, 462 (2017) 167–173

Kangkana Deka, D K Das, Voltammetric distinction between dopamine and ascorbic acid using bare Platinum disc electrode catalysed by bisethylenediaminecopper(II). Indian J. Chem. Tech. 24 (2017) 102-106.

2016

Smita Sarma, P K Bhattacharyya, D K Das, Condensation product of phenylalanine and salicylaldehyde: fluorescent sensor for Zn²⁺. J Fluorescence 26 (2016) 899-904.

Babita Sarma, S Bharali, D K Das, Synthesis, Crystal structure and Thermogravimetry of ortho phthalic acid bridged coordination polymer of Copper(II), J Chem Sc. (2016) 899-904. 

Subratjyoti Borah, D K Das, Modified montmorillonite clay stabilized silver nanoparticles: An active heterogeneous catalytic system for the synthesis of propargylamines. Catalysis Letters 146 (2016) 656–665

2015

Smita Sarma, P K Bhattacharyya, D K Das, A new fluorescent “off-on” sensor for Al³⁺ derived from L-alanine and salicylaldehyde. J  Fluorescence 25 (2015) 1537

Jutika Kumar, M J Sarma, P Phukan, D K Das, Surfactant dependent pH controlled “off-on”, “off-on-off” and “on-off” fluorescent switches exhibited by N-benzylidenenaphthalen-1-amine. J Fluoresce 25 (2015) 1431–1435.

Jutika Kumar, M J Sarma, P Phukan, D K Das, A new simple Schiff base fluorescent “on” sensor for Al³⁺ and its living cell imaging. Dalton Transactions, 44(10) (2015) 4576-4581.

Jutika Kumar, P K Bhattacharyya, D K Das, A New duel fluorescent “on-off” and colorimetric sensor for Copper(II): Copper(II) binds through N coordination and pi cation interaction to sensor. Spectrochim Acta A 138 (2015) 99–104.

Babita Sarma, P K Bhattacharyya, D K Das, Synthesis, characterization and superoxide dismutase activity of bi-copper(II)-bisacetato m-phthalicacid[bis(benzyloxy) ethyl]ester. J Chemical Science 127 (2015) 455–459.

2014 

Jutika Kumar, D K Das, New fluorescent sensor for Cu²⁺ based on Schiff base derived from 1-naphthylamine and 2-chlorobenzaldehyde. Indian J Chem. Sec A 53A (2014) 1391-1396.

D K Das, Dhanada Sarmah, Raben Ch. Roy Significant effect of charge microenvironment on the redox potential of [Fe₄Se₄(SPh)₄]^2-  in solution and inside film. Canadian J Chem. 92 (2014) 1–4 dx.doi.org/10.1139/cjc-2013-0586.

B Kashyap, Kaku Dutta, D K Das, P Phukan Structurally Simple Ferrocene Derivatives for Selective Cadmium Sensing. J Fluorescence 24 (2014) 975-981.

Kaku Dutta, R C Deka, D K Das A new fluorescent and electrochemical Zn²⁺ ion sensor based on Schiff base derived from benzil and L-tryptophan. Spectrochim Acta A, 124 (2014) 124–129.

Kaku Dutta, R C Deka, D K Das The first enhanced ring planarity based fluorescent “off-on” sensor for Ca²⁺ ion. J Luminescence, 148 (2014) 325-329.

D K Das, Priyanka Goswami, B Medhi N-benzoate-N′ salicylaldehyde ethynelediamine: A new fluorescent sensor for Zn²⁺ ion by “off-on” mode. J Fluorescence 145 (2014) 454-458.

D K Das, Kaku Dutta, pH dependent fluorescence switching in Salicylideneaniline: ‘off-on-off’ operation controlled by surfactant micelles. J Luminescence, 145 (2014) 454-458.

D K Das, Babita Sarma, Sangita Haloi - Synthesis, characterization and application as electrode modifying agent for simultaneous voltammetric determination of dopamine and ascorbic acid of a novel bimetallic copper(II) complex. J Chemical Papers 68 (2) (2014) 153–163.

2013

Dhanada Sarmah, D K Das, Effect of charge microenvironment on the electrochemistry of [Fe₂S₂(OC₆H₅)₄]^2- cluster. J Chemical Science. 125 (2013) 1429-1434.

Kaku Dutta, D K Das, A new on-fluorescent probe for Manganese (II) ion. J Fluorescence,  (2013) 23:1173–1178 (DOI 10.1007/s10895-013-1248-0)

Kaku Dutta, R C Deka, D K Das, The First Bifluoride Sensor Based on Fluorescent Enhancement. J Fluorescence, 23 (2013) 823–828.

D K Das, Priyanka Goswami, Smita Sarma, Salicylaldehyde phenylhydrazone: a new highly selective fluorescent lead (II) probe. J Fluorescence, 23 (2013) 503–508.

Sangita Haloi, Priyanka Goswami, D K Das Differentiating response of 2,7 dichlorofluorescein intercalated CTAB modified Na-MMT clay matrix towards dopamine and ascorbic acid investigated by electronic, fluorescence spectroscopy and  electrochemistry. J Applied Clay Science 77-78(2013)79-82.

Babita Sarma, D K Das Synthesis, spectroscopy, thermal analysis, electrochemistry and superoxide scavenging activity of a new bimetallic copper(II) complex. J Chemistry. 2013 (http://dx.dot.org/10.1155/2013/349580).

2012:

D K Das , Priyanka Goswami, Champa Barman and Biva Das Methyl Red : A fluorescent sensor for Hg²⁺ over Na⁺, K⁺, Ca²⁺, Mg²⁺, Zn²⁺ and Cd²⁺ Env Eng Research, 2012, 175(S1):S1-S4

Kaku Dutta, D K Das 2,7-Diferrocenyl-3,6-diazaocta-2,6-diene: A highly selective dual fluorescent sensor for Zn²⁺ and Ag⁺ and electrochemical sensor for Zn²⁺. Indian J Chem. A., 51A(2012)816-820.

Priyanka Goswami, D K Das  N,N,N,N-tetradentate macrocyclic ligand based selective fluorescent sensor for zinc (II). J Fluorescence 22 (2012) 1081-1085.

Pradyumna Goswami and D K Das 2, 4-Dinitrophenylhydrazine @ phosphatidylcholine modified GC electrode: voltammetrically distinguishing dopamine, uric acid and ascorbic acid. J Surface Sc and Tech 28 (2012) 25-36.

Rimki Bhattacharjya and D K Das Catechol encapsulated surfactant film modified Glassy Carbon electrode to detect thiourea at 10^-8 M level Indian J Chem Tech 19 (2012) 52-55.

Priyanka Goswami, D K Das  A new highly sensitive and selective fluorescent cadmium sensor. J Fluorescence 22 (2012) 391-395.

 2011:

Priyanka Goswami and D K Das Significant effect of surfactant micelles on the fluorescent “off-on-off” behaviour of salicylaldehyde- 2,4-dinitrophenylhydrazine. J Luminescence 131(2011)760-763.

2010:

Priyanka Goswami, Sukanya Baruah and D K Das, 2,7 dichlorofluorescein, a fluorescent sensor to detect Cd²⁺ over Na⁺, K⁺, Ca²⁺, Cu²⁺, Ni²⁺ and Zn²⁺. Indian J Chem A, 49A (2010) 1617-1620.

Jitumani Rajbongshi and D K Das, S Mazumdar, Direct electrochemistry of dinuclear CuA fragment from cytochrome oxidase of Thermus thermophilus at surfactant modified glassy carbon electrode. Electrochim Acta 55 (2010) 4174-4179.

 2009:

Manashjyoti Goswami and D K Das, Synthesis, Characterisation and bromoperoxidase activity of potassium bisperoxohistidinatovanadyl. J Assam Science Soc 49 (2009) 64-67.

2008:

D K Das Electrochemical detection of Zn²⁺ ion using diphenylamine/ carbon nanotube / cetyltrimethylammonium bromide film modified glassy carbon electrode.  J Surface Sc and Technology, 24 (2008) 149.

D K Das, Biva Das and O K Medhi Electrochemistry of (protoporphyrinato IX) iron(III) and its imidazole complexes in liposomes of L-a -Phosphatidylcholine.  J Surface Sc and Technology, 24 (2008) 79-86.

Rimki Bhattacharjya and D.K. Das  Vitamin K3 encapsulated poly(vinylpyrrolidone) film modified glassy carbon electrode for studying the vitamin K3 – caffeine interaction, Indian J Chem A, 47A, (2008) 394-396.

 2007:

Raben Ch. Roy, D K Das – Electrochemistry of [Fe₄S₄(SCH₂CH₂COO^-)₄]^6- in liposomes and microemulsions.  Indian J Chem, 46A (2007) 1252-1256.

Rimki Bhattacharjya, D K Das, Ferrocene encapsulated lipid and surfactant film on electrode surface. A voltametric sensor for the determination of trace amount of thiourea, Indian J Chem A, 46A (2007) 276-279

2006:

Akhtar Hussain, Moushumi Sarma, D K Das Significant effect of egg albumin on the redox potential of vitamin K_. J Assam Science Soc 47 (2006) 11-14

Rimki Bhattacharjya, D K Das Catechol (1,2-dihydroxybenzene) inside charged film on electrode surface. A new voltammetric sensor of vitamin C Indian J Chem A, 45A (2006) 909-912.

2005:

Raben Ch. Roy, D K Das – Redox linked protonation / deprotonation on the carboxylate of [Fe₄S₄(SCH₂CH₂COO^-)₄]^6- in aqueous micellar solutions.  Indian J Chem A, 44A (2005) 1597-1601.

Raben Ch. Roy, D K Das - Influence of charged microenvironment on redox potential and diffusion co-efficient of [Fe₄S₄(SPh)₄](NBu₄)₂ in DMF and inside CTAB film on electrode surface. J Chem Science, 117 (2005) 657-661

D K Das, O K. Medhi – Aqua pyridine complex of protoporphyrinato IX iron(III): Effect of ligand binding, surfactant concentration and proton coupling on redox potential. Indian J Chem. 44A (2005) 2228 -2232.

2004 - 1995:

Raben Ch. Roy, Rimki Bhattacharjya, D K Das – Effect of film charge on mid point potential of encapsulated ferrocene. Indian J Chem. 43A, 2004, 1689-1691.

D K Kalita, D K Das, P K Gogoi, Synthesis, characterisation and antibacterial activity of 2-methylpipera zinedithiocarbamates of Ru(III), Rh(III), Pd(II), Os(III) and Pt(II)   (0) Proceeding Indian Ac Sc. 2002

D K Das, O K Medhi – The role of heme propionate in controlling the redox potential of heme: Square Wave Voltammetry of protoporphyrinato IX  iron(III) in aquaeous surfactant micelles.  J Inorganic Biochemistry, 70, 1998, 83-90.

D K Das, O K Medhi – Effect of surfactant and pH on the redox potential of microperoxidase 11 in aqueous micellar solutions.    Dalton Trans, 1998, 1693-1698

D K Das, C Bhattaray, O K Medhi – Electrochemical behaviour of (protoporphyrinato IX) iron (III) encapsulated in aqueous surfactant micelles. Dalton Trans, 1997, 4713-4717.

S Pattanayak, D K Das, P Chakraborty, A Chakravorty Binding of thioether to trivalent Chromium. A family of CrS₂N₂O₂ complexes derived from acyclic ligands. Inorg Chem 34 (1995) 6556-6558

·        Chemical Research Society of India (CRSI) Young Scientist Award, 2017 (February).

                          Name: Dr Diganta Kumar Das.

                          Designation: Professor (Full)

Department of Chemistry,

Gauhati University, Guwahati.

E-mail:   diganta_chem@gauhati.ac.in

                digantakdas@gmail.com

Mobile:    +91-986427374, +91-9101726585

Residence: 47, F B Lane, Satribari, Guwahati, Assam, India – 781 008

Academic qualification:

B.Sc. (1991)                         Gauhati University              Class I (3rd Rank, Distinction)

M.Sc. (1993-94)                   Gauhati University              Class I (Spl-Inorganic)

Ph.D.  (2000)                        Gauhati University

Thesis Title:

Electron transfer in iron porphyrins encapsulated in surfactant micelles and liposomes                     

 *Summer research fellowship at IACS, Jadavpur, Kolkata under Prof Animesh Chakravorty  (1994).

*JRF/SRF of CSIR from 1995 to 1998.

 Positions held:

 Lecturer in Chemistry, Dibrugarh University, Assam from August 1998 to May 2001.

 Lecturer / Sr. Lecturer in Chemistry, Gauhati University, Guwahati from June 2001 to 2007.

 Reader (2007 to 2010) & Associate Professor (2010 to 2013) in Chemistry, Gauhati University, Guwahati, Assam.

Life Members:

·         Indian Society for Surface Science and Technology.

·         Assam Science Society.

·         Society for Chemical Education, Assam

Other responsibilities in GU:

Vice-President, Gauhati University Teachers Association, (2017-2018).

Nodal Faculty-Chemistry, IQAC-GU.

Asst. Co-ordinator Post Graduate Diploma in Analytical Chemistry, 2014- till date.

Co-ordinator Ph.D. course in Chemistry, G.U. 2009 & 2010.

In-Charge Placement Cell – Chemistry, GU

Other Responsibilities/Assignments accomplished:

Judge, CBSE North East Science Exhibition, Miles Bronson Residential School, Guwahati, 29-30 December, 2017.

General Secretary, Society for Chemical Education, Assam (2013-2017).

Member Indian National Chemistry Olympiad Board, 2016 & 2017, HBCSE (TIFR)-Mumbai

Member Board of studies, NEHU, Shillong, 2016-2017

State co-ordinator of State Level Chemistry Olympiad  (2005-2012)

Centre-in-charge: National Standard Examination of  Gauhati University Centre from 2005-2011, 2016

Visiting Faculty: Rajib Gandhi University, Arunachal Pradesh, India.

Visiting Scientist: TIFR-Mumbai (2007-2010)