Dr. Abhishek Mondal's Group

01/12/2025

It was a privilege to attend and deliver an invited lecture at the 4th International Conference on Spins in Molecular Systems(SiMS 2025), where chemistry, physics, and materials meet and talk about beauty of science jointly organised by the Indian Institute of Technology, Kharagpur and the SN Bose National Centre for Basic Sciences, Kolkata.

13/10/2024

“সকলকে জানাই শুভ বিজয়ার আন্তরিক প্রীতি, শুভেচ্ছা এবং অভিনন্দন, বড়দের প্রনাম, ছোটদের ভালোবাসা”

06/03/2024

Applications are welcome for the Research Associate Position at the Solid State and Structural Chemistry Unit under the supervision of Prof. Abhishek Mondal



A. Project Description:

“Switchable Magnetic Materials”

B. Essential Qualifications:

Candidates must have knowledge about advanced organic or inorganic synthesis and Characterization Techniques such as NMR, Mass, and Single Crystal XRD, and preliminary knowledge of SQUID Magnetometer is desirable. Therefore, a Ph.D. in Chemistry is the minimum qualification required for the application.

C. Salary: As per institute norm

D. Period of service:

Initially, it will be for a period of six months with a possibility for extension (max three years) after six months.

E. Joining Date: Immediately

F. Screening Criteria: Scrutinizing the CV of candidates followed by two rounds of interviews.

Candidates should send their applications via email with the CV, copies of certificates in support of age, qualification, experience, justification for a gap year (if any), etc. to Prof. Abhishek Mondal, Email: [email protected].

Please provide us with two recommendation letters (preferably via email to [email protected]) from your previous employer or mentors before the application deadline.

G. Application Deadline: 25.03.2024, 5 PM

09/11/2021

Dr. Abhishake Mondal is awarded the NASI- Young Scientist Platinum Jubilee Award for the year 2021 in the field of Chemical Sciences (http://nasi.nic.in/NYS%202021%20Final%20Result.pdf)..

06/10/2021

Dr. Abhishake Mondal has been awarded the Indian National Science Academy (INSA-Medal) for Young Scientists-2021 award.

23/08/2021

“Properties of [Fe4Cu2] magnetic cluster compound”
An article got published by Mr. Swapnil Shukla, Dr. Sayed Muktar Hossain, Ms. Sakshi Mehta, Mr. Sujit Kamilya, Dr. Abhishake Mondal and Prof. D. D. Sarma in Bulletin of Materials Science on 13th August 2021. The article investigates the magnetic properties of a rationally designed Fe4Cu2 cluster built by following a building block approach. The results indicate the existence of ferromagnetic interactions between low spin Fe3+and Cu2+ions. At lower temperatures there is an intriguing changeover to antiferromagnetic interactions. Furthermore, ac susceptibility experiment reveals the glassy spin dynamics below 4 K in this cluster due to the presence of competing magnetic interactions.
This article is part of the special issue on ‘Quantum materials and devices’ and interested readers can find the article at the following link:

We have designed and synthesized a novel magnetic cluster containing low-spin (S = 1/2) Fe3+ and spin-1/2 Cu2+ ions, which incorporates competing ferromagnetic Fe–Cu interactions and antiferromagnetic Fe–Fe and Cu–Cu interactions. This is achieved with the help of a cyanido-bridged hexanuclear...

20/08/2021

Heartiest congratulations to Ms. Krishna Kaushik ( Kaushik) and Mr. Sujit Kamilya ( Kamilya) for being awarded the Best Student Poster Award at MolMag 2021, IX International conference "High-Spin Molecules and Molecular Magnets” and XIV Russian-Japanese workshop "Open Shell Compounds and Molecular Spin Devices".

28/07/2021

"Polyoxovanadates with Ethylidene-Pyridine Functionalized Bisphosphonate Ligands: Synthesis, Structure, Spectroscopic Characterization, Magnetic, and Antibacterial Studies"
An article got published by Ms. Sakshi Mehta and Dr. Abhishake Mondal in Crystal Growth and Design in collaboration with Dr. Abhishek Banerjee from Visvesvaraya National Institute of Technology, Nagpur on July14th 2021. The article discusses five new bisphosphonatepolyoxovandate compounds. The synthesized compounds show significant antibacterial properties with respect to peroxidase-like activity, which is attributed to the enhancement of the antibacterial activity in the presence of H2O2.
Interested readers can find this article "Polyoxovanadates with Ethylidene-Pyridine Functionalized Bisphosphonate Ligands: Synthesis, Structure, Spectroscopic Characterization, Magnetic, and Antibacterial Studies" on the following link:

Reaction of ethylidene-pyridyl functionalized bisphosphonates with vanadium containing oxo compounds has afforded three different bisphosphonate–polyoxovanadate derivatives, viz., [(VIVO2)(VV2O5)2{O3P-C(O)(CH2-2-C5NH4)-PO3}2]10– (1), [(VIVO2)(VV2O5)2{O3P-C(O)(CH2-3-C5NH4)-PO3}2]10– (2), [(VIVO...

02/05/2021

"Reversible Photo- and Thermo-Induced Spin-State Switching in a Heterometallic {5d-3d} W2Fe2 Molecular Square Complex"
An article got published by Ms. Krishna Kaushik, Dr. Subrata Ghosh, Mr. Sujit Kamilya, Dr. Mathieu Rouzieres, Ms. Sakshi Mehta, and Dr. Abhishake Mondal in Inorganic Chemistry on April 30th, 2021.
The article describes the first complex containing iron(II) and [WV(CN)8]3– units exhibiting both SCO and photomagnetic effect. Following the complex-as-a-ligand strategy, self-assembly of [W(CN)8]3– and iron(II) with bidentate nitrogen donor ligand bik (bik = bis(1-methyl-1H-imidazol-2-yl)ketone) ligand affords a cyanide-bridged [W2Fe2] molecular square complex. The complex was characterized by single-crystal X-ray diffraction analyses, (photo)magnetic studies, optical reflectivity, electrochemical studies, and spectroscopic studies. The complex exhibits thermo-induced spin crossover (SCO) between {WV (S = 1/2) – FeIILS (S = 0)} and {WV (S = 1/2) – FeIIHS (S = 2)} pairs near room temperature and photoinduced spin-state switching with TLIESST = 70 K under light irradiation at low temperature.
Interested readers can hop on to the following link to have a detailed read on the "Reversible Photo- and Thermo-Induced Spin-State Switching in a Heterometallic {5d-3d} W2Fe2 Molecular Square Complex": https://pubs.acs.org/doi/full/10.1021/acs.inorgchem.1c01014

02/05/2021

"Thermo- and Photo-Induced Spin State Switching in an Iron(II) 2D Coordination Network associated with Large Light-Induced Thermal Hysteresis and Tuning of Dimensionality via Ligand Modulation"
An article got published by Dr. Subrata Ghosh, Mr. Sujit Kamilya, Dr. Titas Pramanik, Dr. Ashutosh Mohanty, Dr. Mathieu Rouzieres, Dr. Radovan Herchel, Ms. Sakshi Mehta, and Dr. Abhishake Mondal in the Dalton Transactions on April 22nd, 2021.
Three iron(II) complexes, based on 2,5-dipyridyl-3,4,-ethylenedioxylthiophene and 2,5-diethynylpyridinyl-3,4-ethylenedioxythiophene, have been synthesized using redox-active luminescent ethylenedioxythiophene (EDOT) - based ligands, and characterized by variable temperature single-crystal X-ray diffraction, (photo)magnetic, optical reflectivity, and spectroscopic studies. Interestingly, a 2D coordination network structure with FeN6 surrounding around each iron center was observed for one of the complexes, which exhibits reversible thermo-induced spin-state switching between paramagnetic high-spin (HS) (S = 2) and diamagnetic low-spin (LS) (S = 0) states at around 105 K (T1/2). Further, optical reflectivity and photomagnetic measurements at low temperature confirmed that the complex shows reversible ON/OFF conversion between a photo-induced excited paramagnetic HS metastable state and diamagnetic LS state under light irradiations (ON mode using red light and OFF mode using green light). Finally, the photo-induced excited HS state can be reversibly relaxed back to the diamagnetic ground LS state by heating the system ca. 88 K (TLIESST = 88 K) (light-induced excited spin state trapping (LIESST) effect). Further, the complex also displayed an exciting and unique 18 K wide light-induced thermal hysteresis (LITH) effect above liquid nitrogen temperature (100 K). DFT and CASSCF level theoretical calculations were utilized to better understand the magneto-structure correlations of these complexes.
Interested readers can find the article "Thermo- and Photo-Induced Spin State Switching in an Iron(II) 2D Coordination Network associated with Large Light-Induced Thermal Hysteresis and Tuning of Dimensionality via Ligand Modulation" on the following link:

Three iron(II) complexes, [Fe(L1)2(NCS)2(MeOH)2].2MeOH.3H2O (1), [Fe(L1)2(NCSe)2(MeOH)2].4MeOH (2), and {[Fe(L2)2(NCS)2].4EtOH.4H2O}n (3) (L1 = 2,5-dipyridyl-3,4,-ethylenedioxylthiophene and L2 = 2,5-diethynylpyridinyl-3,4-ethylenedioxythiophene), have been synthesized using redox-active luminescent...

02/05/2021

"Effect of Ligand Modulation on Metal-to-Metal Electron Transfer in a Series of [Fe2Co2] Molecular Square Complexes"
An article got published by Mr. Sujit Kamilya, Dr. Subrata Ghosh, Ms. Sakshi Mehta, and Dr. Abhishake Mondal in the Journal of Applied Physical Chemistry-A on April 23rd, 2021.
The article discusses a series of three new cyanide-bridged [FeCo] molecular square complexes. All three complexes were characterized by single-crystal X-ray diffraction analyses and by magnetic, electrochemical, and spectroscopic measurements. Magnetic studies reveal that all three complexes exhibit temperature-induced metal-to-metal electron transfer (MMET) from a high-spin Co(II) center to a low-spin Fe(III) center, transforming a high-temperature paramagnetic {FeIIILS–CN–CoIIHS} ground state into a low-temperature diamagnetic {FeIILS–CN–CoIIILS} state with a decrease in the temperature from 300 to 100 K.
Interested readers can find the article on the following link:

A series of three new cyanide-bridged [FeCo] molecular square complexes, namely, {[Fe(Tp*)(CN)3]2[Co(L)2]2}(BF4)2·2DMF (L = bik (1), bik* (2), and vbik (3); Tp* = hydrotris(3,5-dimethylpyrazol-1-yl)borate, bik = bis(1-methyl-1H-imidazol-2-yl)ketone, bik* = bis(1-ethyl-1H-imidazol-2-yl)ketone, and v...