PPT for Nanjing University of Dr. Munendra Pal Singh-Revised 1.pptx

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1. Postdoctoral Candidate Nanjing Tech University, China July 7th , 2023 Brief introduction of my candidature 1 Doctor of Philosophy ( PhD ): July 2015-January 2021, in Inorganic and Supramolecular Chemistry from IIT Guwahati ., India Master of Science ( M.Sc .): June 2012-June 2014 , in Chemistry from Aligarh Muslim University, Aligarh, India . Bachelor of Science ( B.Sc. ) ( HONS ): June 2009-June 2012 , in Chemistry from Aligarh Muslim University, Aligarh, India Higher Secondary ( H.S ): 2009, in Science from UP Board Allahabad , India. Secondary ( 10th ): 2007, from UP Board Allahabad, India . Research and Teaching Experiences Dr. Munendra Pal Singh Taken fundamental Inorganic and Physical chemistry courses of B. Tech in IIT Guwahati . Taken Inorganic practical classes of M.Sc. in IIT Guwahati . Taken Inorganic chemistry Tutorial for B.Tech . Courses at IIT Guwahati 1

2. General features of cyclic imide Imides are substituted amides in which nitrogen atom is flanked by two carbonyl groups. Synthesis: condensation of cyclic anhydride and amine (or ammonia). Imides have extensive application in molecular recognitions, biochemistry and in material science. Few illustrative examples of cyclic aromatic imides are shown below. Different types of stacking interactions shows by naphthalimides π-deficient···π-deficient. π-rich···π-rich π-deficient···π-rich Inorg . Chem ., 2009, 48 , 8911-8924. Dalton Trans ., 2000, 3885-3896. Presence of electron deficient and electron rich aromatic unit, cyclic imides are ideal candidates for charge transfer complex formation. 2-D networks showing charge transfer interaction. 2

3. Rigid unit Flexible tether Imidazole or Pyridine unit with protonated site Rigid unit OR Analyte Binding site or Hydrogen bond acceptor Part for secondary interactions 2.1.2 Imidazole-Tethered limides in sensing of nitrophenols Research works done during PhD: 2.1.1 2.2.1 2.2.2 3 ChemistrySelect ., 2018, 3 , 6364-6373. Fluorophore suitable for pi-stacking

4. Fluorescence properties of 2.2.1 was modified by coformers in solid and solution state Fluorescence spectroscopic titration of 2.2.1 with (b) HBr and (c) 2,4,6-TNP in solution Fluorescence emission study (b) (c) (a) Solid state (a) fluorescence spectra of 2.2.1 and salts 2.2.1 Dexter quenching ChemistrySelect ., 2018, 3 , 6364-6373. Tuning optical properties by salts strategy: 2.2.2 2.2.3 2.2.4 2.2.5 2.2.1 4 Charge-transfer through π -interactions between cation and anion 2.2.5 2.2.2 Parallel arrangements of the dipolar napthalimide rings through π -interactions 2.2.4

5. 1 H-NMR of 2.2.1 in DMSO- d 6 with different percentage of D 2 O 2.2.1 Study Aggregation-Induced-Emission (AIE) activity and recognition of picric acid (PA): From acetonitrile solution From acetonitrile-H 2 O (1:1, v/v) solution From acetonitrile-H 2 O (1:1, v/v) solution having equivalent amount of 2,4,6-TNP with respect to 2.2.1 DLS-based particle size and FESEM of 2.2.1 ChemistrySelect ., 2018, 3 , 6364-6373. 5 Fluorescence emission spectra of 2.2.1 in presence of different % of water Fibrous appearance Globular appearance Fluffy appearance

6. Changes in the fluorescence intensities at 417 nm of 3.1 (10−5 M) at different concentrations of carboxylic acids and nitrophenols . (a) (b) Enhancement (thick line) followed by quenching of emission (dashed line). Fluorescence spectroscopic titration of 3.1 with (a) 2-NBA and (b) 2,4,6-TNP Nitrophenols recognitions by a imidazole tethered Anthracene derivative 3.1 Ionic cocrystal 3.2 Salt 3.3 Salt 3.4 Salt 3.5 Salt 3.6 CrystEngComm , 2019, 21 , 4898-4909. 6 Observed emissions of 3.1 on interactions with nitrophenols and carboxylic acids.

7. Molecular recognition of Hydroxyaromatics (L) Complex 4.1 Guest included complex Synthesis of various guest included complexes of 4.1 4.1 4.2 4.3 4.4 4.5 Series of various organic phenolic compounds used in this study. Molecular recognition through crystallization process Inorg.Chim.Acta ., 2020, 504 , 119467. 7

8. 4.1 (10 − 5  M) on addition of 2,4,6-tnp (10 − 5  M  in water, 10  μL aliquots); L (10 − 4 M in Ethanol) on addition of FeCl3 shows quenching of emission (thick line) and upon addition of 2,6-pyridinedicarboxylic acid (10−4 M in 10 μL aliquots) showing enhancement of emission (dashed line). Table 4.1: Detection limit for different hydroxyaromatics Compound Detection limit ( μM ) Compound Detection limit ( μM ) 3-NP 0.45 1,3-DHB 0.66 4-NP 0.44 1,4-DHB 0.61 2,4-DNP 0.41 1,2,3-DHB 0.58 2,4,6-TNP 0.39 1,3,5-DHB 0.55   1,2-DHB   0.64 Inorg.Chim.Acta . , 2020, 504 , 119467. L 8

9. Stacking among naphthalimide rings Synthesis of d 10 -complexes Zn(II), Cd(II) forms isomorphous complexes with distorted octahedral geometry CrystEngComm , 2020, 22 , 4374-4385. Photo-physical Properties of Ag, Zn, Cd Complexes Having N-(4-Pyridylmethyl)-1, 8-naphthalimide Packing diagrams of complexes 5.2 Packing diagrams of complexes 5.3 9

10. Research Plans at Nanjing Tech University, China : Chem. Soc. Rev., 2015, 44, 6774-6803. Structural features Highly crystalline Highly porous Tuneable pore size Tuneable functionality Highly stable Organic-inorganic hybrid Examples of few well-known MOFs. 10

11. Plan-1: To synthesize new photoluminescence materials for anion recognition and their metal complexes, coordination polymer and metal organic framework for industrial applications. Applications MOFs, Metal complexes, Coordination polymer Gas adsorption Sensing Heterogeneous catalysis Proton conductivity Drug delivery Light harvesting Plan-2: To synthesize Salts, Cocrystal , metal complexes, coordination polymer and metal organic framework of Drug molecules to increase drug activities. . Cryst . Growth Des., 2013, 13,1988-2003 . Research Plans at Nanjing Tech University, China : Dalton Trans., 2020,49, 15473-15480 Synthetic strategy for the MOFs. 11

12. Lists of Publications 12 Lists of Publications as First author M. P. Singh , J. B. Baruah, Photophysical properties of Ag, Zn and Cd - N -(4-pyridylmethyl)-1,8-naphthalimide complexes: influences of π-stacking and C–H···O interactions, CrystEngComm , 2020, 22 , 4374-4385. M . P. Singh , A. Tarai, J. B. Baruah, Photo-physical properties of salts of a di-topic imidazole-tethered anthracene derivative in solid and solution, CrystEngComm , 2019, 21 , 4898-4909. M . P. Singh , J. B. Baruah, Combinations of Tautomeric Forms and Neutral-Cationic Forms in the Cocrystals of Sulfamethazine with Carboxylic Acids, ACS Omega ., 2019, 4 , 11609-11620. M . P. Singh , J. B. Baruah, Stable host–guest complexes of bis-2,6-pyridinedicarboxylate iron(III) with dihydroxybenzenes , Polyhedron ., 2017, 138 , 103-108. M . P. Singh , J. B. Baruah, Detection of hydroxyaromatics in a superior manner by a water soluble fluorescent iron-complex, Inorg.Chim.Acta ., 2020, 504 , 119467. M . P. Singh , K, Shankar, J. B. Baruah , Study on the interactions of nitrophenols with bis -8- hydroxyquinolinium zinc-2,6-pyridinedicarboxylate, Inorg . Chim . Acta ., 2019, 489 , 204-210. M . P. Singh , J. B. Baruah, Modulation of dual fluorescence modes and emissions of 2-(1,4-dioxo-1,4- dihydro-naphthalen-2-yl-amino)benzoic acid, Journal of Molecular Structure ., 2017, 1149 , 315-322. M . P. Singh , J. B. Baruah, Photophysical Properties of Phthalimide and Pyromellitic Diimide Tethered Imidazolium Nitrophenolate Salts, ChemistrySelect ., 2019, 4 , 10-16. M . P. Singh , A. Tarai, J. B. Baruah, Neutral, Zwitterion, Ionic Forms of 5‐Aminoisophthalic Acid in Cocrystals, Salts and Their Optical Properties, ChemistrySelect ., 2019, 4 , 5427-5436.

13. Lists of Publications contd. 13 10. M. P. Singh , A. Tarai, J. B. Baruah, Changes in Emission Properties by π‐Stacking and Conformation Adjustment of an Imidazole‐Tethered Naphthalimide Derivative, ChemistrySelect ., 2018, 3 , 6364-6373. 11 . M. P. Singh , N. Phukan , J. B. Baruah, Emission of Pyrene Connected to Benzothiazole Unit via Resonance and Intramolecular Charge Transfer, ChemistrySelect ., 2018, 3 , 963-967. 12 . M. P. Singh , J. B. Baruah, Dual Modes and Dual Emissions of an Amino-Naphthoquinone Derivative, J Fluoresc ., 2017, 27 ,1923-1928. Lists of Publications as coauthor 13 . R. Brahma, M. P Singh , J. B. Baruah, Stacking among the clips of the poly-aromatic rings of phenazine with hydroxy-aromatics and photophysical properties, RSC Adv. , 2019, 9 , 33403-33412. 14 . K. Shankar, M. P. Singh , J. B. Baruah , Extent of protonation of 4,4′-bipyridinium cations and nature of host influences the amount of guest intake by cobalt(II) 2,6-pyridinedicarboxylate, Inorg . Chim . Acta ., 2018, 469 , 440-446. 15 . P. Khakhlary , M. P. Singh , A. Bhuyan , J. B. Baruah, Cocrystals of Naphthalenediols with Aliphatic Amines and Their Photoluminescence Properties, ChemistrySelect ., 2018, 3 , 7983-7990. （ 16 . J. Sendh , M. P. Singh , 5-[(Pyren-9-ylmethyl)amino]isophthalic Acid with Nitrogen Containing Heterocycles: Stacking, N-H∙∙∙π Interactions and Photoluminescence, CrystEngComm , 2021, 23 , 6952-6966. 17 . A. P. Singh, M. P. Singh , J. B. Baruah, Changes in the Proportions of an Active Pharmaceutical through cocrystals , Drug Dev Res . 2021, 1-10.

14. Thank You Prof. Jubaraj B Baruah (PhD Supervisor : July 2015-January 2021) MHRD and DST DST FIST for XRD facility Dept. of Chemistry, IIT Guwahati and IITG; CIF Lab mates, friends and family members. 14