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Papers by Akella Sivaramakrishna

Research paper thumbnail of Domino and Multicomponent Reactions by Graphene-Based Carbocatalysts – A Boon for Organic Transformations

BENTHAM SCIENCE PUBLISHERS eBooks, May 1, 2023

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Research paper thumbnail of Synthesis and antibacterial studies of novel hydrazide based thorium(IV) and lanthanum(III) complexes

Zenodo (CERN European Organization for Nuclear Research), May 1, 2015

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Research paper thumbnail of Molecular Incorganic Silicon Chemistry ‐ Part 3

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Research paper thumbnail of Alkali solubilized nickel(II)-dimethylglyoxime as a new redox indicator

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Research paper thumbnail of Investigations on synthesis and bioactivity of novel organometallic complexes

Pharmaceutical regulatory affairs, Jul 9, 2013

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Research paper thumbnail of Room Temperature Catalytic Synthesis of Biaryl and Benzimidazole Derivatives - Triggered by Nano-Sized Pd-Loaded-Modified Chitosan Polyurethane Foams

Journal of Catalysis, Oct 1, 2023

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Research paper thumbnail of ChemInform Abstract: Synthesis, Structure, Chemistry, and Applications of Tetravalent Nickel Complexes

ChemInform, Jun 16, 2011

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Research paper thumbnail of Recent Advances in the Synthesis, Properties, and Applications of Modified Chitosan Derivatives: Challenges and Opportunities

Topics in Current Chemistry, Apr 8, 2021

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Research paper thumbnail of Poly(ionic liquids) as “smart” stabilizers for metal nanoparticles

European Polymer Journal, Nov 1, 2014

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Research paper thumbnail of The recent advances in cobalt-catalyzed C(sp<sup>3</sup>)–H functionalization reactions

Organic and Biomolecular Chemistry, 2023

Functionalization of unactivated C(sp3)–H bonds represents one of the interesting transformations... more Functionalization of unactivated C(sp3)–H bonds represents one of the interesting transformations in organic synthesis. This review highlights the most recent developments in the cobalt-catalyzed functionalization of unactivated C(sp3)–H bonds.

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Research paper thumbnail of Functionalized Triazines and Tetrazines: Synthesis and Applications

Topics in Current Chemistry, Jun 23, 2022

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Research paper thumbnail of Recent advances in biodegradable polymers – Properties, applications and future prospects

European Polymer Journal

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Research paper thumbnail of CCDC 1403608: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

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Research paper thumbnail of CCDC 1455699: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

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Research paper thumbnail of Carbamoylmethylphosphine Oxide-Functionalized MIL-101(Cr) as Highly Selective Uranium Adsorbent

Analytical chemistry, Jan 6, 2017

The carbamoylmethylphosphine oxide (CMPO) functionalized MIL-101(Cr) was investigated as a potent... more The carbamoylmethylphosphine oxide (CMPO) functionalized MIL-101(Cr) was investigated as a potential uranium scavenger. This metal-organic framework-based adsorbent shows very high selectivity toward uranium, as well as thorium, in competition with various rare earth metals. Furthermore, it showed rapid adsorption kinetics, in both batch conditions and a dynamic (column) setup. The adsorbent is fully regenerable, using oxalate solution. Fast elution kinetics in the column setup were observed during the regeneration. In addition, reusability studies were performed under dynamic conditions. Five consecutive adsorption/desorption cycles were carried out, showing a consistent 100% recovery, at pH 4, using 0.1 M oxalate solution as an effective stripping agent. Additionally, the successive use over various adsorption/desorption cycles with constant performance proves the high stability of this adsorbent in an acidic, aqueous environment.

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Research paper thumbnail of Detecting phase transitions in a CaCl_2–H_2O system at low temperatures using a fiber-optic Fresnel reflection sensor

Applied Optics, 2017

Temperature-induced crystallization events in an aqueous calcium chloride solution in the concent... more Temperature-induced crystallization events in an aqueous calcium chloride solution in the concentration range of 15-40 mass% are monitored using an optical fiber Fresnel reflection sensor in the temperature range of 30°C to -200°C. The deviation of the phase boundary from equilibrium and the formation of an eutectic mixture followed by its densification during rapid cooling are inferred from the distinct signatures of the optical fiber sensor via the changes in refractive index. During the natural heating at laboratory ambient conditions, the optical signals impart the completion of dissolution of ice and CaCl&amp;amp;amp;amp;lt;sub&amp;amp;amp;amp;gt;2&amp;amp;amp;amp;lt;/sub&amp;amp;amp;amp;gt;·6H&amp;amp;amp;amp;lt;sub&amp;amp;amp;amp;gt;2&amp;amp;amp;amp;lt;/sub&amp;amp;amp;amp;gt;O. The corresponding temperatures have been used in Linke&amp;amp;amp;amp;#39;s equations to obtain the salinities, which are in good agreement with the intended solution concentrations. The sensor signal imparts simultaneous melting of the constituents of the eutectic mixture of a 29.7 mass% solution during the natural heating phase. The persistence of the metastable liquid phase at -200°C for tens of minutes followed by solidification is observed at all the concentrations studied. Finally, the feasibility of monitoring phase transitions in a NaCl-CaCl&amp;amp;amp;amp;lt;sub&amp;amp;amp;amp;gt;2&amp;amp;amp;amp;lt;/sub&amp;amp;amp;amp;gt;-H&amp;amp;amp;amp;lt;sub&amp;amp;amp;amp;gt;2&amp;amp;amp;amp;lt;/sub&amp;amp;amp;amp;gt;O system has been demonstrated.

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Research paper thumbnail of Development of highly selective chemosensor for Al3+: Effect of substituent and biological application

Sensors and Actuators B: Chemical, 2015

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Research paper thumbnail of Combustion, Performance and Emission Characteristics of Diesel Engine with Neem Oil Methyl Ester and Its Diesel Blends

American Journal of Applied Sciences, 2013

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Research paper thumbnail of Synthesis and characterization of platinacyclosulfides derived from platinum based heterobimetallic carbonyl clusters

Zenodo (CERN European Organization for Nuclear Research), May 1, 2015

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Research paper thumbnail of Studies on synthesis and coordination chemistry of catechol based phosphine oxides

Zenodo (CERN European Organization for Nuclear Research), May 1, 2015

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Research paper thumbnail of Domino and Multicomponent Reactions by Graphene-Based Carbocatalysts – A Boon for Organic Transformations

BENTHAM SCIENCE PUBLISHERS eBooks, May 1, 2023

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Research paper thumbnail of Synthesis and antibacterial studies of novel hydrazide based thorium(IV) and lanthanum(III) complexes

Zenodo (CERN European Organization for Nuclear Research), May 1, 2015

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Research paper thumbnail of Molecular Incorganic Silicon Chemistry ‐ Part 3

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Research paper thumbnail of Alkali solubilized nickel(II)-dimethylglyoxime as a new redox indicator

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Investigations on synthesis and bioactivity of novel organometallic complexes

Pharmaceutical regulatory affairs, Jul 9, 2013

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Research paper thumbnail of Room Temperature Catalytic Synthesis of Biaryl and Benzimidazole Derivatives - Triggered by Nano-Sized Pd-Loaded-Modified Chitosan Polyurethane Foams

Journal of Catalysis, Oct 1, 2023

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Research paper thumbnail of ChemInform Abstract: Synthesis, Structure, Chemistry, and Applications of Tetravalent Nickel Complexes

ChemInform, Jun 16, 2011

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Research paper thumbnail of Recent Advances in the Synthesis, Properties, and Applications of Modified Chitosan Derivatives: Challenges and Opportunities

Topics in Current Chemistry, Apr 8, 2021

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Research paper thumbnail of Poly(ionic liquids) as “smart” stabilizers for metal nanoparticles

European Polymer Journal, Nov 1, 2014

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Research paper thumbnail of The recent advances in cobalt-catalyzed C(sp<sup>3</sup>)–H functionalization reactions

Organic and Biomolecular Chemistry, 2023

Functionalization of unactivated C(sp3)–H bonds represents one of the interesting transformations... more Functionalization of unactivated C(sp3)–H bonds represents one of the interesting transformations in organic synthesis. This review highlights the most recent developments in the cobalt-catalyzed functionalization of unactivated C(sp3)–H bonds.

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Research paper thumbnail of Functionalized Triazines and Tetrazines: Synthesis and Applications

Topics in Current Chemistry, Jun 23, 2022

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Research paper thumbnail of Recent advances in biodegradable polymers – Properties, applications and future prospects

European Polymer Journal

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Research paper thumbnail of CCDC 1403608: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

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Research paper thumbnail of CCDC 1455699: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Carbamoylmethylphosphine Oxide-Functionalized MIL-101(Cr) as Highly Selective Uranium Adsorbent

Analytical chemistry, Jan 6, 2017

The carbamoylmethylphosphine oxide (CMPO) functionalized MIL-101(Cr) was investigated as a potent... more The carbamoylmethylphosphine oxide (CMPO) functionalized MIL-101(Cr) was investigated as a potential uranium scavenger. This metal-organic framework-based adsorbent shows very high selectivity toward uranium, as well as thorium, in competition with various rare earth metals. Furthermore, it showed rapid adsorption kinetics, in both batch conditions and a dynamic (column) setup. The adsorbent is fully regenerable, using oxalate solution. Fast elution kinetics in the column setup were observed during the regeneration. In addition, reusability studies were performed under dynamic conditions. Five consecutive adsorption/desorption cycles were carried out, showing a consistent 100% recovery, at pH 4, using 0.1 M oxalate solution as an effective stripping agent. Additionally, the successive use over various adsorption/desorption cycles with constant performance proves the high stability of this adsorbent in an acidic, aqueous environment.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Detecting phase transitions in a CaCl_2–H_2O system at low temperatures using a fiber-optic Fresnel reflection sensor

Applied Optics, 2017

Temperature-induced crystallization events in an aqueous calcium chloride solution in the concent... more Temperature-induced crystallization events in an aqueous calcium chloride solution in the concentration range of 15-40 mass% are monitored using an optical fiber Fresnel reflection sensor in the temperature range of 30°C to -200°C. The deviation of the phase boundary from equilibrium and the formation of an eutectic mixture followed by its densification during rapid cooling are inferred from the distinct signatures of the optical fiber sensor via the changes in refractive index. During the natural heating at laboratory ambient conditions, the optical signals impart the completion of dissolution of ice and CaCl&amp;amp;amp;amp;lt;sub&amp;amp;amp;amp;gt;2&amp;amp;amp;amp;lt;/sub&amp;amp;amp;amp;gt;·6H&amp;amp;amp;amp;lt;sub&amp;amp;amp;amp;gt;2&amp;amp;amp;amp;lt;/sub&amp;amp;amp;amp;gt;O. The corresponding temperatures have been used in Linke&amp;amp;amp;amp;#39;s equations to obtain the salinities, which are in good agreement with the intended solution concentrations. The sensor signal imparts simultaneous melting of the constituents of the eutectic mixture of a 29.7 mass% solution during the natural heating phase. The persistence of the metastable liquid phase at -200°C for tens of minutes followed by solidification is observed at all the concentrations studied. Finally, the feasibility of monitoring phase transitions in a NaCl-CaCl&amp;amp;amp;amp;lt;sub&amp;amp;amp;amp;gt;2&amp;amp;amp;amp;lt;/sub&amp;amp;amp;amp;gt;-H&amp;amp;amp;amp;lt;sub&amp;amp;amp;amp;gt;2&amp;amp;amp;amp;lt;/sub&amp;amp;amp;amp;gt;O system has been demonstrated.

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Research paper thumbnail of Development of highly selective chemosensor for Al3+: Effect of substituent and biological application

Sensors and Actuators B: Chemical, 2015

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Combustion, Performance and Emission Characteristics of Diesel Engine with Neem Oil Methyl Ester and Its Diesel Blends

American Journal of Applied Sciences, 2013

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Research paper thumbnail of Synthesis and characterization of platinacyclosulfides derived from platinum based heterobimetallic carbonyl clusters

Zenodo (CERN European Organization for Nuclear Research), May 1, 2015

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Research paper thumbnail of Studies on synthesis and coordination chemistry of catechol based phosphine oxides

Zenodo (CERN European Organization for Nuclear Research), May 1, 2015

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Research paper thumbnail of Dono r-stab ilized hyper coordinated silic on (IV) chelat es wi th cyclohe xylid en eimino-N ligand gr ou p: Rol e of substi tuents on i oni zatio n

N - C yclo hexyli den eimino- O -(trime t h yl s ily l) acylimid ates react smoothly with XSiCl3 ... more N - C yclo hexyli den eimino- O -(trime t h yl s ily l) acylimid ates react smoothly with XSiCl3 (X = M e , Ph, v i nyl
and C l) i n a transsi lyla tion re actio n pr od ucing ionic pentacoord inate b ischelates and neutral hexaco ordi -
nat e d co mplexes de pe n ding o n the e lectronic and s teric b ehavior of the lig ands . These hyp ercoord inated
si licon co mplexes are cha racte rized by UV–V is , FT- IR and N MR s pectroscop i c techni ques. A neutral hexa-
coordi nate sil icon comple x with dich lor o ligands was char acter iz ed by s ingle cry stal X- ray analy sis. The
UV–Vi s ab sor pti on da ta sh owed a sig nificant bathochr omic s hift of k max in hyp e r c o o rd inat e d s i li c o n c o m -
plexes on com p ar is o n with th e ir co rres ponding hydr azide lig ands . The 29Si N M R che m i cal shifts s tro ngl y
de pend on n atur e of X gro up directly attached to the central s ilicon atom towar d io nizati o n.

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