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Research Articles (Tapas Kumar Maji): Recent submissions

Now showing items 21-40 of 45

Dynamic, conjugated microporous polymers: visible light harvesting via guest-responsive reversible swelling

Rao, K. Venkata; Haldar, Ritesh; Maji, Tapas Kumar; George, Subi Jacob (Royal Society of Chemistry, 2016)

The light-harvesting properties of two fluorescent dynamic conjugated microporous organic polymers (Py-PP and Py-BPP) rendered with pyrene chromophores are described. The hydrophobic and dynamic nature of these porous ...
Coordination polymer gels: soft metal-organic supramolecular materials and versatile applications

Sutar, Papri; Maji, Tapas Kumar (Royal Society of Chemistry, 2016)

In recent times, significant attention has been paid to the development of functional coordination polymer gels (CPGs) from rationally designed low molecular weight gelators (LMWGs) and metal ions. Coordination of metal ...
Luminescent Metal-Organic Complexes of Pyrene or Anthracene Chromophores: Energy Transfer Assisted Amplified Exciplex Emission and Al3+ Sensing

Haldar, Ritesh; Prasad, Kornai; Samanta, Pralok Kumar; Pati, Swapan Kumar; Maji, Tapas Kumar (American Chemical Society, 2016)

Using pyrene and anthracene monocarboxylate chromophores two metal-organic complexes, {[Cd (pma)(2)(o-phen)(2)]center dot 2H(2)O center dot MeOH)}(n) (1) and {Cd-2(mu-H2O)(amc)(4)(o-phen)(2)}(n) (2) (Hpma = pyrene ...
Post-synthetic metalation in an anionic MOF for efficient catalytic activity and removal of heavy metal ions from aqueous solution

Chakraborty, Anindita; Bhattacharyya, Sohini; Hazra, Arpan; Ghosh, Ashta Chandra; Maji, Tapas Kumar (Royal Society of Chemistry, 2016)

A new 3D porous anionic MOF (AMOF-1) based on Zn-II and a flexible tetracarboxylate linker has been synthesized. AMOF-1 showed potential for capture and removal of toxic metal ions from aqueous solution with a detection ...
Self-cleaning MOF: realization of extreme water repellence in coordination driven self-assembled nanostructures

Roy, Syamantak; Suresh, Venkata M.; Maji, Tapas Kumar (Royal Society of Chemistry, 2016)

Bio-inspired self-cleaning surfaces have found industrial applications in oil-water separation, stain resistant textiles, anti-biofouling paints in ships etc. Interestingly, self-cleaning metal-organic framework (MOF) ...
A discrete Cu-6(II) cluster and a 3D Mn-II-Cu-II framework based on assembly of Mn2Cu4 clusters: synthesis, structure and magnetic properties

Chakraborty, Anindita; Escuer, Albert; Ribas, Joan; Maji, Tapas Kumar (Royal Society of Chemistry, 2016)

The synthesis, single-crystal structure characterization and detailed magnetic study of a homometallic hexanuclear Cu-II cluster [Cu-6(mu(3)-OH)(2)(ppk())6(H2O)2(NO3)(4)] (1) and a three-dimensional (3D) compound ...
2D coordination polymer composed of 1D {Ni-II(mu-O)(mu-H2O)Ni-II}(n) ferromagnetic chains: Modulation of magnetic properties based on dehydration and rehydration

Adalikwu, Stephen Adie; Chakraborty, Anindita; Hazra, Arpan; Ghosh, Dibyajyoti; Pati, Swapan Kumar; Maji, Tapas Kumar (Pergamon-Elsevier Science Ltd, 2016)

Synthesis, single-crystal structure and magnetic properties of a 2D coordination compound [Ni(1,3-ADA) (H2O)](n) (1) is reported which exhibits tunable magnetic behavior based on dehydration-rehydration. 1 shows ferromagnetic ...
Reversible Polymorphism, Liquid Crystallinity, and Stimuli-Responsive Luminescence in a Bola-amphiphilic pi-System: Structure-Property Correlations Through Nanoindentation and DFT Calculations

Roy, Syamantak; Hazra, Arpan; Bandyopadhyay, Arkamita; Raut, Devraj; Madhuri, P. Lakshmi; Rao, D. S. Shankar; Ramamurty, Upadrasta; Pati, Swapan Kumar; Prasad, S. Krishna; Maji, Tapas Kumar (American Chemical Society, 2016)

We report the design, synthesis, detailed characterization, and analysis of a new multifunctional pi-conjugated bola-amphiphilic chromophore: oligo-(p-phenyleneethynylene)-dicarboxylic acid with dialkoxyoctadecyl side ...
Dynamic Entangled Porous Framework for Hydrocarbon (C2-C3) Storage, CO2 Capture, and Separation

Sikdar, Nivedita; Bonakala, Satyanarayana; Haldar, Ritesh; Balasubramanian, Sundaram; Maji, Tapas Kumar (Wiley-V C H Verlag Gmbh, 2016)

Storage and separation of small (C1-C3) hydrocarbons are of great significance as these are alternative energy resources and also can be used as raw materials for many industrially important materials. Selective capture ...
Cd-113 Nuclear Magnetic Resonance as a Probe of Structural Dynamics in a Flexible Porous Framework Showing Selective O-2/N-2 and CO2/N-2 Adsorption

Haldar, Ritesh; Inukai, Munehiro; Horike, Satoshi; Uemura, Kazuhiro; Kitagawa, Susumu; Maji, Tapas Kumar (American Chemical Society, 2016)

Two new isomorphous three-dimensional porous coordination polymers, {[Cd(bpe)(0.5)(bdc)(H2O)]center dot EtOH}n (1) and {[Cd(bpe)(0.5)(bdc)(H2O)]center dot 2H(2)O}n (2) [bpe = 1,2-bis(4-pyridyl)ethane, and H2bdc = ...
Coordination-Driven Fluorescent J-Aggregates in a Perylenetetracarboxylate-Based MOF: Permanent Porosity and Proton Conductivity

Sikdar, Nivedita; Dutta, Dipak; Haldar, Ritesh; Ray, Turjya; Hazra, Arpan; Bhattacharyya, Aninda Jiban; Maji, Tapas Kumar (American Chemical Society, 2016)

Here we report the synthesis and structural characterizations of a new 3D functional metal-organic framework {[K-8(PTC)(2)(H2O)(1.5)]center dot 4H(2)O}(n) formed by the self-assembly of K-I and chromophoric linker ...
Bimodal self-assembly of an amphiphilic gelator into a hydrogel-nanocatalyst and an organogel with different morphologies and photophysical properties

Sutar, Papri; Maji, Tapas Kumar (Royal Society of Chemistry, 2016)

We design a flexible, amphiphilic LMWG consisting of donor and acceptor pi-chromophores which self-assembles into a hydrogel and an organogel with different nano-morphologies. Different mechanisms of self-assembly evolve ...
Host-Guest [2+2] Cycloaddition Reaction: Postsynthetic Modulation of CO2 Selectivity and Magnetic Properties in a Bimodal Metal-Organic Framework

Hazra, Arpan; Bonakala, Satyanarayana; Bejagam, Karteek K.; Balasubramanian, Sundaram; Maji, Tapas Kumar (Wiley-V C H Verlag Gmbh, 2016)

Simultaneous tuning of permanent porosity and modulation of magnetic properties by postsynthetic modification (PSM) with light in a metal-organic framework is unprecedented. With the aim of achieving such a photoresponsive ...
Crystal Dynamics in Multi-stimuli-Responsive Entangled Metal-Organic Frameworks

Kanoo, Prakash; Haldar, Ritesh; Reddy, Sandeep K.; Hazra, Arpan; Bonakala, Satyanarayana; Matsuda, Ryotaro; Kitagawa, Susumu; Balasubramanian, Sundaram; Maji, Tapas Kumar (Wiley-V C H Verlag Gmbh, 2016)

An understanding of solid-state crystal dynamics or flexibility in metal-organic frameworks (MOFs) showing multiple structural changes is highly demanding for the design of materials with potential applications in sensing ...
Understanding guest and pressure-induced porosity through structural transition in flexible interpenetrated MOF by Raman spectroscopy

Kumari, Gayatri; Patil, N. R.; Bhadram, Venkata Srinu; Haldar, Ritesh; Bonakala, Satyanarayana; Maji, Tapas Kumar; Narayana, Chandrabhas (Wiley-Blackwell, 2016)

Interpenetrating metal organic frameworks are interesting functional materials exhibiting exceptional framework properties. Uptake or exclusion of guest molecules can induce sliding in the framework making it porous or ...
Stabilization of Cu2O nanoparticles on a 2D metal-organic framework for catalytic Huisgen 1,3-dipolar cycloaddition reaction

Jayaramulu, Kolleboyina; Suresh, Venkata M.; Maji, Tapas Kumar (Royal Society of Chemistry, 2015)

We report a simple methodology for the stabilization of Cu2O nanoparticles of size 2-4 nm on the polar pore surface of a 2D metal-organic framework, {[Zn(Himdc)(bipy)(0.5)]center dot DMF} (1). For the first time, a Cu2O@1a ...
High aspect ratio, processable coordination polymer gel nanotubes based on an AIE-active LMWG with tunable emission

Suresh, Venkata M.; De, Anangsha; Maji, Tapas Kumar (Royal Society of Chemistry, 2015)

A new TPE based low molecular weight gelator (LMWG) which displays both AIE and MCIE phenomena in gel state has been synthesized. LMWG self-assembles to form 1D nanofibers which undergo morphology transformation to ...
Light driven mesoscale assembly of a coordination polymeric gelator into flowers and stars with distinct properties

Mukhopadhyay, Rahul Dev; Praveen, Vakayil K.; Hazra, Arpan; Maji, Tapas Kumar; Ajayaghosh, Ayyappanpillai (Royal Society of Chemistry, 2015)

Control over the self-assembly process of porous organic-inorganic hybrids often leads to unprecedented polymorphism and properties. Herein we demonstrate how light can be a powerful tool to intervene in the kinetically ...
Pillared-bilayer porous coordination polymers of Zn(II): enhanced hydrophobicity of pore surface by changing the pillar functionality

Bhattacharya, Biswajit; Haldar, Ritesh; Maity, Dilip Kumar; Maji, Tapas Kumar; Ghoshal, Debajyoti (Royal Society of Chemistry, 2015)

Two new isostructural porous coordination polymers of Zn(II) {[Zn-2(NH2-bdc)(2)(4-bpdb)]center dot(H2O)(4)}(n) (1) and {[Zn-2(NH2-bdc)(2)(4-bpdb)]center dot(H2O)(4))(4)}(n) (2) [4-bpdb = 1,4-bis-.4-pyridyl)-2,3-diaza-1,3 ...
Rational design of a pyrene based luminescent porous supramolecular framework: excimer emission and energy transfer

Prasad, Komal; Haldara, Ritesh; Maji, Tapas Kumar (Royal Society of Chemistry, 2015)

Here we report a rational design and synthesis approach to construct a porous luminescent supramolecular framework by modulating the spatial arrangement of aromatic linkers directed by coordination to a metal ion. A ...

Now showing items 21-40 of 45

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