Faculty Publications (CPMU): Recent submissions

Now showing items 1-20 of 214

Allosteric Transition Induced by Mg2+ Ion in a Transactivator Monitored by SERS

Kundu, Partha P.; Bhowmick, Tuhin; Swapna, Ganduri; Kumar, G. V. Pavan; Nagaraja, V.; Narayana, Chandrabhas (American Chemical Society, 2014)

We demonstrate the utility of the surface-enhanced Raman spectroscopy (SERS) to monitor conformational transitions in protein upon ligand binding. The changes in protein's secondary and tertiary structures were monitored ...
Porous polyimides from polycyclic aromatic linkers: Selective CO2 capture and hydrogen storage

Rao, K. Venkata; Haldar, Ritesh; Maji, Tapas Kumar; George, Subi Jacob (Elsevier Sci Ltd, 2014)

Porous polyimides are important class of macromolecules owing to their excellent redox behaviour, efficient capture of CO2 and H-2 gases, interesting photocatalytic properties and superior thermal and chemical stabilities. ...
Supramolecular Gating of Ion Transport in Nanochannels

Kumar, B. V. V. S. Pavan; Rao, K. Venkata; Sampath, S.; George, Subi Jacob; Eswaramoorthy, Muthusamy (Wiley-V C H Verlag Gmbh, 2014)

Several covalent strategies towards surface charge-reversal in nanochannels have been reported with the purpose of manipulating ion transport. However, covalent routes lack dynamism, modularity and post-synthetic flexibility, ...
Amine-Responsive Adaptable Nanospaces: Fluorescent Porous Coordination Polymer for Molecular Recognition

Haldar, Ritesh; Matsuda, Ryotaro; Kitagawa, Susumu; George, Subi Jacob; Maji, Tapas Kumar (Wiley-V C H Verlag Gmbh, 2014)

Flexible and dynamic porous coordination polymers (PCPs) with well-defined nanospaces composed of chromophoric organic linkers provide a scaffold for encapsulation of versatile guest molecules through noncovalent interactions. ...
Charge-Transfer Nanostructures through Noncovalent Amphiphilic Self-Assembly: Extended Cofacial Donor-Acceptor Arrays

Rao, K. Venkata; Jalani, Krishnendu; Jayaramulu, K.; Mogera, Umesha; Maji, Tapas Kumar; George, Subi Jacob (Wiley-V C H Verlag Gmbh, 2014)
Cu Doping in Ligand Free CdS Nanocrystals: Conductivity and Electronic Structure Study

Grandhi, G. Krishnamurthy; Swathi, K.; Narayan, K. S.; Viswanatha, Ranjani (American Chemical Society, 2014)

Ligand-free Cu-doped CdS nanocrystals (NCs) have been synthesized to elucidate their surface electronic structure. The Cu-doped ligand-free NCs unlike their undoped counterparts are shown to be luminescent. We used this ...
Ultrafast response humidity sensor using supramolecular nanofibre and its application in monitoring breath humidity and flow

Mogera, Umesha; Sagade, Abhay A.; George, Subi Jacob; Kulkarni, G. U. (Nature Publishing Group, 2014)

Measuring humidity in dynamic situations calls for highly sensitive fast response sensors. Here we report, a humidity sensor fabricated using solution processed supramolecular nanofibres as active resistive sensing material. ...
Conformational change in a urea catalyst induced by sodium cation and its effect on enantioselectivity of a Friedel-Crafts reaction

Chittoory, Arjun K.; Kumari, Gayatri; Mohapatra, Sudip; Kundu, Partha P.; Maji, Tapas K.; Narayana, Chandrabhas; Rajaram, Sridhar (Pergamon-Elsevier Science Ltd, 2014)

While developing bis-camphorsulfonyl urea as a hydrogen-bonding catalysts, we discovered that the native conformation of the catalyst is unsuitable for inducing enantioselectivity. By complexing the catalyst with weakly ...
Porous coordination polymers based on functionalized Schiff base linkers: enhanced CO2 uptake by pore surface modification

Bhattacharya, Biswajit; Haldar, Ritesh; Dey, Rajdip; Maji, Tapas Kumar; Ghoshal, Debajyoti (Royal Society of Chemistry, 2014)

We report the synthesis, structural characterization and adsorption properties of three new porous coordination polymers {[Cu(Meazpy)(0.5)(glut)](H2O)}(n) (2), {[Zn(azpy)(0.5)(terep)](H2O)}(n) (3), and {[Zn(Meazpy)(0.5)( ...
Oligo(p-phenyleneethynylene)-Derived Porous Luminescent Nanoscale Coordination Polymer of Gd-III: Bimodal Imaging and Nitroaromatic Sensing

Suresh, Venkata M.; Chatterjee, Snehajyoti; Modak, Rahul; Tiwari, Vivek; Patel, Anant B.; Kundu, Tapas Kumar; Maji, Tapas Kumar (American Chemical Society, 2014)

Self-assembled highly luminescent nanoscale coordination polymer of {[Gd(OPE)(NO3)(H2O)2]center dot H2O} (NCP-1), (oligo-(p-phenyleneethynylene)dicarboxylate) was synthesized by coordination-driven self-assembly of ...
A hexanuclear Cu(I) cluster supported by cuprophilic interaction: effects of aromatics on luminescence properties

Chakraborty, Anindita; Ramachandran, Krishna Kumar; Yamijala, Sharma S. R. K. C.; Pati, Swapan Kumar; Maji, Tapas Kumar (Royal Society of Chemistry, 2014)

A hexanuclear Cu(I) cluster {Cu-3(L)(2)}(2) (1) based on a novel tripodal linker (L) has been synthesized. 1 shows intense emission (lambda(max) 560 nm) with lifetime <tau > = 224 ms and quantum yield = 27.6%. The emission ...
Amide Functionalized Microporous Organic Polymer (Am-MOP) for Selective CO2 Sorption and Catalysis

Suresh, Venkata M.; Bonakala, Satyanarayana; Atreya, Hanudatta S.; Balasubramanian, Sundaram; Maji, Tapas Kumar (American Chemical Society, 2014)

We report the design and synthesis of an amide functionalized microporous organic polymer (Am-MOP) prepared from trimesic acid and p-phenylenediamine using thionyl chloride as a reagent. Polar amide (CONH) functional groups ...
Mg-MOF-74@SBA-15 hybrids: Synthesis, characterization, and adsorption properties

Chakraborty, Anindita; Maji, Tapas Kumar (American Institute of Physics, 2014)

Nanocrystals of Mg-MOF-74 have been immobilized into the mesopores of SBA-15 rods to fabricate Mg-MOF-74@SBA-15 hybrid materials. To furnish such composites, a relatively simple synthetic strategy has been adopted by direct ...
In-situ Stabilization of Tin Nanoparticles in Porous Carbon Matrix derived from Metal Organic Framework: High Capacity and High Rate Capability Anodes for Lithium-ion Batteries

Shiva, Konda; Jayaramulu, Kolleboyina; Rajendra, H. B.; Maji, Tapas Kumar; Bhattacharyya, Aninda J. (Wiley-V C H Verlag Gmbh, 2014)

It is a formidable challenge to arrange tin nanoparticles in a porous matrix for the achievement of high specific capacity and current rate capability anode for lithium-ion batteries. This article discusses a simple and ...
Interpenetrated Metal-Organic Frameworks with [Ag(CN)(2)](-) Bridging Ligand: Synthesis, Structural Characterization and Magnetic Study

Chakraborty, Anindita; Maji, Tapas Kumar (National Academy of Sciences India, 2014)

This report articulates synthesis and single-crystal structural characterization of two twofold interpenetrated three dimensional metal-organic frameworks [Co-II(bipy)(2){Ag(CN)(2)}(2)](n) (1) and [Co-II(bpee)(2){Ag(CN)(2)}(2)](n) ...
Flexible and Rigid Amine-Functionalized Microporous Frameworks Based on Different Secondary Building Units: Supramolecular Isomerism, Selective CO2 Capture, and Catalysis

Haldar, Ritesh; Reddy, Sandeep K.; Suresh, Venkata M.; Mohapatra, Sudip; Balasubramanian, Sundaram; Maji, Tapas Kumar (Wiley-V C H Verlag Gmbh, 2014)

We report the synthesis, structural characterization, and porous properties of two isomeric supramolecular complexes of ([Cd(NH(2)bdc)(bphz)(0.5)]DMFH2O}(n) (NH(2)bdc=2-aminobenzenedicarboxylic acid, bphz=1,2-bis(4-pyrid ...
Lanthanide-organic frameworks for gas storage and as magneto-luminescent materials

Roy, Syamantak; Chakraborty, Anindita; Maji, Tapas Kumar (Elsevier Science Sa, 2014)

Smart and careful design strategies need to be adopted for the synthesis of lanthanide organic framework materials to strike a balance between the high coordination requirement of lanthanide metal ions and the formation ...
Synthesis, Characterization, and Modeling of a Functional Conjugated Microporous Polymer: CO2 Storage and Light Harvesting

Suresh, Venkata M.; Bonakala, Satyanarayana; Roy, Syamantak; Balasubramanian, Sundaram; Maji, Tapas Kumar (American Chemical Society, 2014)

A Rationalization of structure and properties of amorphous porous solids at the microscopic level is essential in developing advanced materials. We delineate the structural modeling of a designed tetraphenylethene-based ...
Structural and Magnetic Diversity Based on Different Imidazolate Linkers in Cu(II)-Azido Coordination Compounds

Chakraborty, Anindita; Lingampalli, Srinivasa Rao; Kumari, Aman; Ribas, Joan; Ribas-Arino, Jordi; Maji, Tapas Kumar (American Chemical Society, 2014)

This Article reports the syntheses, structural characterization, and magnetic studies of four different Cu(II)-azido compounds based on imidazole or substituted imidazole ligand. The compounds, [Cu-2(mu(1,1)-N-3)(2)(Etim ...
Synthesis and Structural Characterization of 1D and 2D Coordination Polymers based on Flexible 1,3-Adamantanediacetic Acid and Exo-bidentate Organic Linkers

Haldar, Ritesh; Maji, Tapas Kumar (Wiley-V C H Verlag Gmbh, 2014)

Five mixed-linkers based coordination polymers, namely {M(1, 3-Hadc)(bpy)(H2O)(2)}(n) [M = Ni-II (1), Co-II (2)], {Zn(1, 3-adc)(bpy)(0.5)}(n) (3), {Cd(1, 3-Hadc)(2)(bpy)}(n) (4), and {Cu(1, 3-Hadc)(2)(bpp)}(n) (5) [1, ...

Now showing items 1-20 of 214

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