Lista de obras - Andrea Bencini - Dominio Público Uruguay

A BINOL-based chiral polyammonium receptor for highly enantioselective recognition and fluorescence sensing of (S,S)-tartaric acid in aqueous solution

article

A Fluorescent Silver(I) Carbene Complex with Anticancer Properties: Synthesis, Characterization, and Biological Studies

artículo científico publicado en 2018

A Tris-Macrocycle with Proton Sponge Characteristics as Efficient Receptor for Inorganic Phosphate and Nucleotide Anions

A dizinc complex for selective fluorescence sensing of uridine and uridine-containing dinucleotides

artículo científico publicado en 2007

A fluorescent chemosensor for Zn(II). Exciplex formation in solution and the solid state

artículo científico publicado en 2004

A fluorescent receptor for halide recognition: clues for the design of anion chemosensors.

artículo científico publicado en 2015

A highly pH-sensitive Zn(II) chemosensor.

artículo científico publicado en 2010

A new low molecular weight, MnII-containing scavenger of superoxide anion protects cardiac muscle cells from hypoxia/reoxygenation injury.

artículo científico publicado en 2014

A new pyridine-based 12-membered macrocycle functionalised with different fluorescent subunits; coordination chemistry towards Cu(II), Zn(II), Cd(II), Hg(II), and Pb(II).

artículo científico publicado en 2004

A novel manganese complex effective as superoxide anion scavenger and therapeutic agent against cell and tissue oxidative injury

artículo científico publicado en 2009

A thermodynamic and spectrophotometric study of anion binding with a multifunctional dipyridine-based macrobicyclic receptor

A zinc(II)-based receptor for ATP binding and hydrolysis

artículo científico publicado en 2005

ATP Recognition and sensing with a phenanthroline-containing polyammonium receptor

artículo científico publicado en 2006

Affinity and nuclease activity of macrocyclic polyamines and their CuII complexes

artículo científico publicado en 2000

An OFF-ON chemosensor for biological and environmental applications: sensing Cd2+ in water using catanionic vesicles and in living cells

artículo científico publicado en 2013

Anion binding by protonated forms of the tripodal ligand tren

artículo científico publicado en 2009

Aza- and Mixed Thia/Aza-Macrocyclic Receptors with Quinoline-Bearing Pendant Arms for Optical Discrimination of Zinc(II) or Cadmium(II) Ions

artículo científico publicado en 2020

Basicity and coordination properties of a new phenanthroline-based bis-macrocyclic receptor

Carboxy and Diphosphate Ester Hydrolysis Promoted by Dinuclear Zinc(II) Macrocyclic Complexes. Role of Zn(II)-Bound Hydroxide as the Nucleophilic Function

artículo científico publicado en 1999

Carboxy and Phosphate Esters Cleavage with Mono- and Dinuclear Zinc(II) Macrocyclic Complexes in Aqueous Solution. Crystal Structure of [Zn(2)L1(&mgr;-PP)(2)(MeOH)(2)](ClO(4))(2) (L1 = [30]aneN(6)O(4), PP(-) = Diphenyl Phosphate)

scientific article published on 01 June 1997

Catching anions with coloured assemblies: binding of pH indicators by a giant-size polyammonium macrocycle for anion naked-eye recognition.

artículo científico publicado en 2016

Cd(II) and Pb(II) Complexation by Dipyridine-Containing Macrocycles with Different Molecular Architecture. Effect of Complex Protonation on Metal Coordination Environment

artículo científico publicado en 2001

Co-ordination chemistry of amino pendant arm derivatives of 1,4,7-triazacyclononane

artículo científico publicado en 2004

Colorimetric response to anions by a “robust” copper(ii) complex of a [9]aneN3 pendant arm derivative: CN− and I− selective sensing

artículo científico publicado en 2011

Coordination Properties of a Polyamine Cryptand with Two Different Binding Moieties. A Case of a pH-Modulated Antenna Device Based on a New Eu(III) Cryptate Complex

artículo científico publicado en 2001

Coordination chemistry of N-aminopropyl pendant arm derivatives of mixed N/S-, and N/S/O-donor macrocycles, and construction of selective fluorimetric chemosensors for heavy metal ions.

artículo científico publicado en 2005

Coordination chemistry of a new cofacial binucleating macropolycycle derived from 1,4,7-triazacyclononane.

artículo científico publicado en 2003

Coordination features of a terpyridine-containing polyamine receptor. Effect of protonation on the photophysical properties of the complexes

scientific article published on 04 October 2006

Coordination features of ditopic oxa-azamacrocycles toward Ni(II) and Co(II). Dioxygen uptake by their dinuclear Co(II) complexes

scientific article published on 05 January 2004

Coordination properties of new bis(1,4,7-triazacyclononane) ligands: a highly active dizinc complex in phosphate diester hydrolysis.

artículo científico publicado en 2003

Cu(ii) and Ni(ii) complexes with dipyridine-containing macrocyclic polyamines with different binding unitsElectronic supplementary information (ESI) available: selected bond lengths [Å] and angles [°] for [CuL1](ClO4)2 (Table S1) and for [NiL1](Cl

article by Carmen Anda et al published 19 February 2003 in Dalton Transactions

Cu(ii) complexation with an acridine-containing macrocycle. Assembly of water cluster chains within the cavity of tetranuclear metallomacrocycles

artículo científico publicado en 2009

DNA Binding by a New Metallointercalator that Contains a Proflavine Group Bearing a Hanging Chelating Unit

scientific article published on 01 January 2008

Design of Ligands That Stabilize Cu(I) and Shift the Reduction Potential of the Cu(II/I) Couple Cathodically in Aqueous Solutions

scientific article published on 01 July 1999

Di- and Triphosphate Recognition and Sensing with Mono- and Dinuclear Fluorescent Zinc(II) Complexes: Clues for the Design of Selective Chemosensors for Anions in Aqueous Media

artículo científico publicado en 2016

Different Antioxidant Efficacy of Two MnII-Containing Superoxide Anion Scavengers on Hypoxia/Reoxygenation-Exposed Cardiac Muscle Cells

scientific article published on 16 July 2019

Effect of Nitrogen Methylation on Cation and Anion Coordination by Hexa- and Heptaazamacrocycles. Catalytic Properties of These Ligands in ATP Dephosphorylation

scientific article published on 01 February 1996

Effect of the SOD mimetic MnL4 on in vitro and in vivo oxaliplatin toxicity: Possible aid in chemotherapy induced neuropathy

artículo científico publicado en 2016

Encapsulation of metal cations and anions within the cavity of bis(1,4,7-triazacyclononane) receptors

artículo científico publicado en 2005

Enhanced intra-cutaneous delivery of a Mn-containing antioxidant drug by high-frequency ultrasounds

artículo científico publicado en 2014

Exploring New Molecular Architectures for Anion Recognition: Synthesis and ATP Binding Properties of New Cyclam-Based Ditopic Polyammonium Receptors

article

Exploring the Photocatalytic Properties and the Long-Lifetime Chemosensor Ability of Cl2[Ru(Bpy)2L] (L = 2,5,8,11,14-Pentaaza[15])-2,2‘-bipyridilophane)

artículo científico publicado en 2001

Exploring the binding ability of phenanthroline-based polyammonium receptors for anions: hints for design of selective chemosensors for nucleotides.

artículo científico publicado en 2009

Fluoride binding by an anionic receptor: tuning the acidity of amide NH groups for basic anion hydrogen bonding and recognition

scientific article published on 01 February 2019

Glyphosate and ATP binding by mononuclear Zn(ii) complexes with non-symmetric ditopic polyamine ligands

artículo científico publicado en 2012

Highly Charged Ruthenium(II) Polypyridyl Complexes as Effective Photosensitizer in Photodynamic Therapy

scientific article published on 02 July 2019

Highly stable ionic liquid-in-water emulsions as a new class of fluorescent sensors for metal ions: the case study of Fe3+ sensing

scholarly article in RSC Advances, vol. 5 no. 47, 2015

Interaction of mixed-donor macrocycles containing the 1,10-phenanthroline subunit with selected transition and post-transition metal ions: metal ion recognition in competitive liquid-liquid solvent extraction of Cu(II), Zn(II), Pb(II), Cd(II), [...]

artículo científico publicado en 2008

Intercalation of Zn(II) and Cu(II) complexes of the cyclic polyamine Neotrien into DNA: equilibria and kinetics

artículo científico publicado en 2004

Kinetic and equilibrium studies on the polyazamacrocycle neotetren: metal-complex formation and DNA interaction

artículo científico publicado en 2005

Metal-based optical chemosensors for CN- detection

artículo científico publicado en 2016

Methylene blue-containing liposomes as new photodynamic anti-bacterial agents

artículo científico publicado en 2017

Modeling and biological investigations of an unusual behavior of novel synthesized acridine-based polyamine ligands in the binding of double helix and G-quadruplex DNA.

artículo científico publicado en 2010

Molecular Recognition of Long Dicarboxylate/Dicarboxylic Species via Supramolecular/Coordinative Interactions with Ditopic Receptors. Crystal Structure of {[Cu2L(H2O)2]⊃Pimelate}(ClO4)2 ⬇️

artículo científico publicado el 22 de febrero de 1999

New bis-cresol-bridged bis(1,4,7-triazacyclononane) ligand as receptor for metal cations and phosphate anions

artículo científico publicado en 2008

New fluorescent chemosensors for heavy metal ions based on functionalized pendant arm derivatives of 7-anthracenylmethyl-1,4,10-trioxa-7,13-diazacyclopentadecane

artículo científico publicado en 2007

New macrocyclic amines showing activity as HIV entry inhibitors against wild type and multi-drug resistant viruses

artículo científico publicado en 2009

New terpyridine-containing macrocycle for the assembly of dimeric Zn(II) and Cu(II) complexes coupled by bridging hydroxide anions and pi-stacking interactions.

artículo científico publicado en 2004

Novel fluorimetric bulk optode membrane based on 5,8-bis((5'-chloro-8'-hydroxy-7'-quinolinyl)methyl)-2,11-dithia-5,8-diaza-2,6-pyridinophane for selective detection of lead(II) ions

scientific article published on 12 November 2009

Palladium(II) Complexation by p-Cyclophane Receptors. A Solution and Solid State Study ⬇️

artículo científico publicado el 3 de mayo de 1999

Phosphate binding by a novel Zn(II) complex featuring a trans-1,2-diaminocyclohexane ligand. Effective anion recognition in water.

artículo científico publicado en 2015

Polyamine receptors containing dipyridine or phenanthroline units: clues for the design of fluorescent chemosensors for metal ions.

artículo científico publicado en 2009

Polyamine-polycarboxylate metal complexes with different biological effectiveness as nitric oxide scavengers. Clues for drug design.

artículo científico publicado en 2008

Polyfunctional binding of thymidine 5'-triphosphate with a synthetic polyammonium receptor containing aromatic groups. Crystal structure of the nucleotide-receptor adduct

artículo científico publicado en 2008

Polyfunctional recognition of pyridinedicarboxylate anions with macrocyclic polyamine receptors containing heteroaromatic groups.

artículo científico publicado en 2008

Protection of coronary endothelial cells from cigarette smoke-induced oxidative stress by a new Mn(II)-containing polyamine-polycarboxilate scavenger of superoxide anion.

artículo científico publicado en 2015

Proton and metal binding by cyclen-based highly rigid cryptands

artículo científico publicado en 2010

Protonation and Zn(II) Coordination by Dipyridine-Containing Macrocycles with Different Molecular Architecture. A Case of pH-Controlled Metal Jumping OutsideInside the Macrocyclic Cavity

Protonation and Zn(II) coordination by dipyridine-containing macrocycles with different molecular architecture. A case of pH-controlled metal jumping outside-inside the macrocyclic cavity.

artículo científico publicado en 2001

Protonation and coordination properties towards Zn(II), Cd(II) and Hg(II) of a phenanthroline-containing macrocycle with an ethylamino pendant arm.

artículo científico publicado en 2004

Selective binding and fluorescence sensing of diphosphate in H2OviaZn2+-induced allosteric regulation of the receptor structure

artículo científico publicado en 2011

Suppression of allergen-induced respiratory dysfunction and airway inflammation in sensitized guinea pigs by Mn(II)(Me(2)DO2A), a novel superoxide scavenger compound

artículo científico publicado en 2010

Synthesis and coordination properties of quinoline pendant arm derivatives of [9]aneN(3) and [9]aneN(2)S as fluorescent zinc sensors.

artículo científico publicado en 2009

Synthesis of Polyamine Macrocycles and Cryptands Incorporating Bipirydine and Phenanthroline Moieties

scientific article published on 01 November 2000

Synthesis of new tren-based tris-macrocycles. Anion cluster assembling inside the cavity generated by a bowl-shaped receptor.

artículo científico publicado en 2002

Tailoring cyclic polyamines for inorganic/organic phosphate binding.

artículo científico publicado en 2010

The solid-state structure of the β-blocker metoprolol: a combined experimental and in silico investigation

artículo científico publicado en 2019

Therapeutic effects of the superoxide dismutase mimetic compound MnIIMe2DO2A on experimental articular pain in rats

artículo científico publicado en 2013

Thermodynamics of Phosphate and Pyrophosphate Anions Binding by Polyammonium Receptors

article

Tren-based tris-macrocycles as anion hosts. Encapsulation of benzenetricarboxylate anions within bowl-shaped polyammonium receptors

artículo científico publicado en 2005

Tuning the activity of Zn(II) complexes in DNA cleavage: clues for design of new efficient metallo-hydrolases

artículo científico publicado en 2008

Tuning the emission properties of fluorescent ligands by changing pH: the unusual case of an acridine-containing polyamine macrocycle.

artículo científico publicado en 2013

Tuning the selectivity/specificity of fluorescent metal ion sensors based on N2S2 pyridine-containing macrocyclic ligands by changing the fluorogenic subunit: spectrofluorimetric and metal ion binding studies

artículo científico publicado en 2007

Zn(II) coordination to polyamine macrocycles containing dipyridine units. New insights into the activity of dinuclear Zn(II) complexes in phosphate ester hydrolysis.

artículo científico publicado en 2004

Zn2+/Cd2+ optical discrimination by fluorescent chemosensors based on 8-hydroxyquinoline derivatives and sulfur-containing macrocyclic units.

artículo científico publicado en 2013

[9]aneN3-based fluorescent receptors for metal ion sensing, featuring urea and amide functional groups

artículo científico publicado en 2019

Lista de obras de Andrea Bencini

A BINOL-based chiral polyammonium receptor for highly enantioselective recognition and fluorescence sensing of (S,S)-tartaric acid in aqueous solution

A Fluorescent Silver(I) Carbene Complex with Anticancer Properties: Synthesis, Characterization, and Biological Studies

A Tris-Macrocycle with Proton Sponge Characteristics as Efficient Receptor for Inorganic Phosphate and Nucleotide Anions

A dizinc complex for selective fluorescence sensing of uridine and uridine-containing dinucleotides

A fluorescent chemosensor for Zn(II). Exciplex formation in solution and the solid state

A fluorescent receptor for halide recognition: clues for the design of anion chemosensors.

A highly pH-sensitive Zn(II) chemosensor.

A new low molecular weight, MnII-containing scavenger of superoxide anion protects cardiac muscle cells from hypoxia/reoxygenation injury.

A new pyridine-based 12-membered macrocycle functionalised with different fluorescent subunits; coordination chemistry towards Cu(II), Zn(II), Cd(II), Hg(II), and Pb(II).

A novel manganese complex effective as superoxide anion scavenger and therapeutic agent against cell and tissue oxidative injury

A thermodynamic and spectrophotometric study of anion binding with a multifunctional dipyridine-based macrobicyclic receptor

A zinc(II)-based receptor for ATP binding and hydrolysis

ATP Recognition and sensing with a phenanthroline-containing polyammonium receptor

Affinity and nuclease activity of macrocyclic polyamines and their CuII complexes

An OFF-ON chemosensor for biological and environmental applications: sensing Cd2+ in water using catanionic vesicles and in living cells

Anion binding by protonated forms of the tripodal ligand tren

Aza- and Mixed Thia/Aza-Macrocyclic Receptors with Quinoline-Bearing Pendant Arms for Optical Discrimination of Zinc(II) or Cadmium(II) Ions

Basicity and coordination properties of a new phenanthroline-based bis-macrocyclic receptor

Carboxy and Diphosphate Ester Hydrolysis Promoted by Dinuclear Zinc(II) Macrocyclic Complexes. Role of Zn(II)-Bound Hydroxide as the Nucleophilic Function

Carboxy and Phosphate Esters Cleavage with Mono- and Dinuclear Zinc(II) Macrocyclic Complexes in Aqueous Solution. Crystal Structure of [Zn(2)L1(&mgr;-PP)(2)(MeOH)(2)](ClO(4))(2) (L1 = [30]aneN(6)O(4), PP(-) = Diphenyl Phosphate)

Catching anions with coloured assemblies: binding of pH indicators by a giant-size polyammonium macrocycle for anion naked-eye recognition.

Cd(II) and Pb(II) Complexation by Dipyridine-Containing Macrocycles with Different Molecular Architecture. Effect of Complex Protonation on Metal Coordination Environment

Co-ordination chemistry of amino pendant arm derivatives of 1,4,7-triazacyclononane

Colorimetric response to anions by a “robust” copper(ii) complex of a [9]aneN3 pendant arm derivative: CN− and I− selective sensing

Coordination Properties of a Polyamine Cryptand with Two Different Binding Moieties. A Case of a pH-Modulated Antenna Device Based on a New Eu(III) Cryptate Complex

Coordination chemistry of N-aminopropyl pendant arm derivatives of mixed N/S-, and N/S/O-donor macrocycles, and construction of selective fluorimetric chemosensors for heavy metal ions.

Coordination chemistry of a new cofacial binucleating macropolycycle derived from 1,4,7-triazacyclononane.

Coordination features of a terpyridine-containing polyamine receptor. Effect of protonation on the photophysical properties of the complexes

Coordination features of ditopic oxa-azamacrocycles toward Ni(II) and Co(II). Dioxygen uptake by their dinuclear Co(II) complexes

Coordination properties of new bis(1,4,7-triazacyclononane) ligands: a highly active dizinc complex in phosphate diester hydrolysis.

Cu(ii) and Ni(ii) complexes with dipyridine-containing macrocyclic polyamines with different binding unitsElectronic supplementary information (ESI) available: selected bond lengths [Å] and angles [°] for [CuL1](ClO4)2 (Table S1) and for [NiL1](Cl

Cu(ii) complexation with an acridine-containing macrocycle. Assembly of water cluster chains within the cavity of tetranuclear metallomacrocycles

DNA Binding by a New Metallointercalator that Contains a Proflavine Group Bearing a Hanging Chelating Unit

Design of Ligands That Stabilize Cu(I) and Shift the Reduction Potential of the Cu(II/I) Couple Cathodically in Aqueous Solutions

Di- and Triphosphate Recognition and Sensing with Mono- and Dinuclear Fluorescent Zinc(II) Complexes: Clues for the Design of Selective Chemosensors for Anions in Aqueous Media

Different Antioxidant Efficacy of Two MnII-Containing Superoxide Anion Scavengers on Hypoxia/Reoxygenation-Exposed Cardiac Muscle Cells

Effect of Nitrogen Methylation on Cation and Anion Coordination by Hexa- and Heptaazamacrocycles. Catalytic Properties of These Ligands in ATP Dephosphorylation

Effect of the SOD mimetic MnL4 on in vitro and in vivo oxaliplatin toxicity: Possible aid in chemotherapy induced neuropathy

Encapsulation of metal cations and anions within the cavity of bis(1,4,7-triazacyclononane) receptors

Enhanced intra-cutaneous delivery of a Mn-containing antioxidant drug by high-frequency ultrasounds

Exploring New Molecular Architectures for Anion Recognition: Synthesis and ATP Binding Properties of New Cyclam-Based Ditopic Polyammonium Receptors

Exploring the Photocatalytic Properties and the Long-Lifetime Chemosensor Ability of Cl2[Ru(Bpy)2L] (L = 2,5,8,11,14-Pentaaza[15])-2,2‘-bipyridilophane)

Exploring the binding ability of phenanthroline-based polyammonium receptors for anions: hints for design of selective chemosensors for nucleotides.

Fluoride binding by an anionic receptor: tuning the acidity of amide NH groups for basic anion hydrogen bonding and recognition

Glyphosate and ATP binding by mononuclear Zn(ii) complexes with non-symmetric ditopic polyamine ligands

Highly Charged Ruthenium(II) Polypyridyl Complexes as Effective Photosensitizer in Photodynamic Therapy

Highly stable ionic liquid-in-water emulsions as a new class of fluorescent sensors for metal ions: the case study of Fe3+ sensing

Interaction of mixed-donor macrocycles containing the 1,10-phenanthroline subunit with selected transition and post-transition metal ions: metal ion recognition in competitive liquid-liquid solvent extraction of Cu(II), Zn(II), Pb(II), Cd(II), [...]

Intercalation of Zn(II) and Cu(II) complexes of the cyclic polyamine Neotrien into DNA: equilibria and kinetics

Kinetic and equilibrium studies on the polyazamacrocycle neotetren: metal-complex formation and DNA interaction

Metal-based optical chemosensors for CN- detection

Methylene blue-containing liposomes as new photodynamic anti-bacterial agents

Modeling and biological investigations of an unusual behavior of novel synthesized acridine-based polyamine ligands in the binding of double helix and G-quadruplex DNA.

Molecular Recognition of Long Dicarboxylate/Dicarboxylic Species via Supramolecular/Coordinative Interactions with Ditopic Receptors. Crystal Structure of {[Cu2L(H2O)2]⊃Pimelate}(ClO4)2 ⬇️

New bis-cresol-bridged bis(1,4,7-triazacyclononane) ligand as receptor for metal cations and phosphate anions

New fluorescent chemosensors for heavy metal ions based on functionalized pendant arm derivatives of 7-anthracenylmethyl-1,4,10-trioxa-7,13-diazacyclopentadecane

New macrocyclic amines showing activity as HIV entry inhibitors against wild type and multi-drug resistant viruses

New terpyridine-containing macrocycle for the assembly of dimeric Zn(II) and Cu(II) complexes coupled by bridging hydroxide anions and pi-stacking interactions.

Novel fluorimetric bulk optode membrane based on 5,8-bis((5'-chloro-8'-hydroxy-7'-quinolinyl)methyl)-2,11-dithia-5,8-diaza-2,6-pyridinophane for selective detection of lead(II) ions

Palladium(II) Complexation by p-Cyclophane Receptors. A Solution and Solid State Study ⬇️

Phosphate binding by a novel Zn(II) complex featuring a trans-1,2-diaminocyclohexane ligand. Effective anion recognition in water.

Polyamine receptors containing dipyridine or phenanthroline units: clues for the design of fluorescent chemosensors for metal ions.

Polyamine-polycarboxylate metal complexes with different biological effectiveness as nitric oxide scavengers. Clues for drug design.

Polyfunctional binding of thymidine 5'-triphosphate with a synthetic polyammonium receptor containing aromatic groups. Crystal structure of the nucleotide-receptor adduct

Polyfunctional recognition of pyridinedicarboxylate anions with macrocyclic polyamine receptors containing heteroaromatic groups.

Protection of coronary endothelial cells from cigarette smoke-induced oxidative stress by a new Mn(II)-containing polyamine-polycarboxilate scavenger of superoxide anion.

Proton and metal binding by cyclen-based highly rigid cryptands

Protonation and Zn(II) Coordination by Dipyridine-Containing Macrocycles with Different Molecular Architecture. A Case of pH-Controlled Metal Jumping OutsideInside the Macrocyclic Cavity

Protonation and Zn(II) coordination by dipyridine-containing macrocycles with different molecular architecture. A case of pH-controlled metal jumping outside-inside the macrocyclic cavity.

Protonation and coordination properties towards Zn(II), Cd(II) and Hg(II) of a phenanthroline-containing macrocycle with an ethylamino pendant arm.

Selective binding and fluorescence sensing of diphosphate in H2OviaZn2+-induced allosteric regulation of the receptor structure

Suppression of allergen-induced respiratory dysfunction and airway inflammation in sensitized guinea pigs by Mn(II)(Me(2)DO2A), a novel superoxide scavenger compound

Synthesis and coordination properties of quinoline pendant arm derivatives of [9]aneN(3) and [9]aneN(2)S as fluorescent zinc sensors.

Synthesis of Polyamine Macrocycles and Cryptands Incorporating Bipirydine and Phenanthroline Moieties

Synthesis of new tren-based tris-macrocycles. Anion cluster assembling inside the cavity generated by a bowl-shaped receptor.

Tailoring cyclic polyamines for inorganic/organic phosphate binding.

The solid-state structure of the β-blocker metoprolol: a combined experimental and in silico investigation

Therapeutic effects of the superoxide dismutase mimetic compound MnIIMe2DO2A on experimental articular pain in rats

Thermodynamics of Phosphate and Pyrophosphate Anions Binding by Polyammonium Receptors