Diganta Kumar Das [ On Lien ]

Diganta Kumar Das [ On Lien ]


MSc (Gauhati) PhD (Gauhati)

Bioelectrochemistry, Inorganic Synthesis

Department of Chemistry
Gauhati University, Guwahati, 781014
Email:- diganta_chem@gauhati.ac.in


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




Name of program

Host institute / Organisation


Popular Talk in Chemistry

D K College, Mirza/ Assam Sc. Society.


Student Outreach Program

SCEA/Ramanuj Junior College, Baihata


Popular Talk in Chemistry

SCEA/Dudhnoi College


Student outreach program

SCEA at Nagaon Anchalik High School, Sipajhar


Public Awareness Lecture on Drug Abuse (in Assamese)

Assam Police & Kalyan Samitee Satribari, Guwahati


Chemistry Olympiad Orientation

Ramanuj Jr. College, Baihata Chariali


Workshop on Writing Research Project for Fund

S B M S College, Sualkushi


Student Outreach Program

SCEA at Deptt. of Chemistry, Pandu College


Career Opportunities in Science

Saint Mary’s H S School, Guwahati


Student Outreach Program

SCEA at Biswanath Chariali


Workshop for Laboratory Bearers

Deptt. of Chemistry, Cotton College


Student Outreach Program of CRSI

Dhemaji College





Grant agency

Title of the project


Amount in Lakh Rs. (Major Instrument Procured)


Developing paper strip sensor for necked eye detection of fluoride in drinking water






Fluorescent self assembled monolayers on quartz glass substrates: Sensing metal ions and small biomolecules.



(Fluorescent spectrophotometer)


Electrochemical studies of the active center analogues of V-Nase.

1-02-2011 to 31-01-2014




Developing new voltammetric sensor for Dopamine and serotonine.

1-11-2010 to





(With TIFR Mumbai)

Direct electrochemistry  of metalloproteins: Electrode modification and Protein film voltammetry.

[SR/S5/BC-II / 2006]

01-04-2007 to



(Spectro Electrochemistry Setup)

DST (Fast Track)

Designing and fabricating new modified electrodes for molecules and ions of biological and environmental significance.

[Fast Track; SR/FTPCS-36/2004]


11-01-2005 to



(CHI Electrochemical Analyser)



Electrochemical studies on the active center analogue of ferredoxins.

[F-12-6/2003 (SR)]

01-06-2003 to      







                          Name: Dr Diganta Kumar Das.

                          Designation: Professor (Full)

Department of Chemistry,

Gauhati University, Guwahati.

E-mail:   diganta_chem@gauhati.ac.in


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)



List of publications:


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



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 PO43-, 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.


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


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) 14311435.

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.


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.


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) 23:11731178 (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).


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.


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.


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.


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


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.


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


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.


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






Name of Seminar / Workshop

Host Institute



International Conference on Electrochemistry in Advanced Material, Corrosion and Radiopharmaceuticals.

BARC Mumbai

15-17 Feb 2018


Chemical Society Annual Lecture

Nalbari College

03 November 2017


Workshop on Scientific Writing

Deptt. of Botany, GU

14-15 July 2017


Recent Developments in Synthesis and Catalysis-2017

Dibrugarh University

10-11 March 2017


Symposium on Advances in Biological Inorganic Chemistry (SABIC-2017)

TIFR (Mumbai)-IACS (Kolkata)

07-11 January 2017


Special Lecture: Departmental Seminar

S N Bose National Centre of Basic Sciences, Kolkata

22-July 2016


Modern Trends in Chemistry (MTIC) XVI

Jadavpur University, Kolkata

03-05 December 2015


Contemporary Developments in Chemical Sciences 2015

Tezpur University, Tezpur

23-24 November 2015


New Approaches of basic Sciences towards the Development of Engineering and Technology 2015

Assam Don Bosco University, Guwahati

27-28 February 2015


Frontiers in Chemistry – 2013

North Bengal University

28 February, 2013


Bioengineering 2012

IIT – Guwahati

30 November, 2012


Conference on Photochemistry and Luminescence

IIT – Guwahati

9-10 March 2012


National seminar on surfactant and surface science

Tripura University

27-29 December 2011


National workshop on Emerging trends in nanochemistry

St. Anthony’s college, Shillong

20-21 September 2011


New approaches of basic sciences towards the development of engineering and technology

Don Bosco University, Guwahati

12-13 March 2009