Luminescent metalloreceptors with pendant macrocyclic ionophores with NS2O3 donor sites: Synthesis, characterization and ion-binding property

Boricha, Vinod P.; Patra, Subrata; Parihar, Sanjay; Chouhan, Yogendra S.; Paul, Parimal

doi:10.1016/j.poly.2012.06.024

Cited by 11 publications

(4 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar to the aforementioned crowns appended with ruthenium tris(bipyridine) (186, 1347 Figure 77, and 194, 1355 Figure 81), 218 (Figure 87), and its sulfur-containing analogues 219 and 220 (Figure 87) were investigated for metal cation sensing abilities by Boricha et al 1370 218 was selectively quenched by Cu 2+ , and analogous sulfur-containing species 219 was quenched by both Cu 2+ and Fe 2+ . The emission of bis(hetero crown ether) host 220 was predominantly quenched by Pb 2+ , but Ce 2+ , Fe 2+ , and Hg 2+ all promoted some degree of emission quenching.…”

Section: Addition Of Hsomentioning

confidence: 99%

See 1 more Smart Citation

Supramolecular Luminescent Sensors

2018

View full text Add to dashboard Cite

There is great need for stand-alone luminescence-based chemosensors that exemplify selectivity, sensitivity, and applicability and that overcome the challenges that arise from complex, real-world media. Discussed herein are recent developments toward these goals in the field of supramolecular luminescent chemosensors, including macrocycles, polymers, and nanomaterials. Specific focus is placed on the development of new macrocycle hosts since 2010, coupled with considerations of the underlying principles of supramolecular chemistry as well as analytes of interest and common luminophores. State-of-the-art developments in the fields of polymer and nanomaterial sensors are also examined, and some remaining unsolved challenges in the area of chemosensors are discussed. CONTENTS 4.4. Explosives 4.5. Pharmaceutical Agents 4.6. Biologically Relevant 4.6.1. Adenosine Triphosphate (ATP)

show abstract

Section: Addition Of Hsomentioning

confidence: 99%

“…Figure 87. Ruthenium tris(bipyridine) bound crowns that were used by Boricha et al for transition metal cation detection 1370. …”

mentioning

confidence: 99%

Supramolecular Luminescent Sensors

2018

View full text Add to dashboard Cite

show abstract

“…The ligand at the focus of our investigation, SNS crown [NaCl] , was synthesized in three steps from the previously reported tert -butyloxycarbonyl (Boc) protected N , N ′-bis(2-chloroethyl) amine ( A ). Substitution of 3-mercaptopropionic acid with A forms the corresponding diacid, B .…”

Section: Results and Discussionmentioning

confidence: 99%

Inhibiting the Hydrogen Evolution Reaction (HER) with Proximal Cations: A Strategy for Promoting Selective Electrocatalytic Reduction

Barlow

Yang

2021

ACS Catal.

View full text Add to dashboard Cite

Most electrochemical reduction reactions require protons; however, direct reduction of protons to hydrogen is a common competitive side reaction that lowers the overall yield (Faradaic efficiency) for the desired product. Inhibition of the hydrogen evolution reaction (HER) by fixed, proximal mono-or dication is reported. An SNS tridentate ligand with a pendant azacrown functionality and the corresponding Pd(II) and Rh(I) complexes were synthesized. For the Pd complexes, the presence of a Na + or Ba 2+ ion in the aza-crown increases the overpotential for hydrogen evolution by up to 260 mV compared to a congener that lacks an aza-crown. The increase in the overpotential for HER was observed with cationic and neutral acids in both acetonitrile and dimethylformamide. Additionally, for the Pd complexes, the inclusion of a Ba 2+ ion into the aza-crown modestly improved the selectivity for electrocatalytic CO 2 reduction to CO, whereas H 2 was the only product for the congener lacking the aza-crown. The Ba 2+ -containing complex also had improved catalytic stability, although all complexes were ultimately unstable under prolonged electrolytic conditions. The increase in the overpotential for HER through the installation of a local charge exemplifies an effective catalyst design strategy for inhibiting the hydrogen evolution reaction.

show abstract

“…Usually, the recognition is achieved by the functionalization of one of the bipyridyl ligands, most of the time at the 4,4′‐positions. [4e, f], In this work, one of the bipyridines was modified at the 3,3′‐positions through amide subunits. Indeed, in a preliminary study we saw that even if the quantum yield of the 3,3′‐bipyridyl‐modified ruthenium(II) complex is lower than that of its 4,4′‐analogue, the increase in luminescence, observed upon the addition of different species, is often greater .…”

Section: Introductionmentioning

confidence: 99%

Functionalized Ruthenium Complexes: Selective “Turn‐on” Detection of Biologically Relevant Anionic Species

et al. 2017

View full text Add to dashboard Cite

To study the effect of the structure of 3,3′‐modified bipyridyl ruthenium complexes on their ability to recognize organic anions, various ruthenium complexes have been prepared. The binding functions and large‐sized modified bipyridyl ligand turned out to be essential for selectivity in acetonitrile. The selectivity for dicarboxylates or phosphates can be switched by using guanidinium‐ or ammonium‐functionalized probes. One of these probes turned out to be selective towards glutamate over aspartate and γ‐aminobutyric acid (GABA). Another was selective towards adenosine 5′‐triphosphate (ATP) over adenosine 5′‐diphosphate (ADP), pyrophosphate (PPi), adenosine 5′‐monophosphate (AMP), and orthophosphate (Pi). In both cases, the binding was attributed to coulombic interactions and hydrogen bonding. π‐stacking interactions also occurred with nucleotides. Replacing ammonium by zinc‐dipicolylamine units made possible the recognition of phosphorylated species in buffered aqueous systems. To our delight, this probe showed selectivity for ADP over ATP and we proved that the selectivity was partly due to substitution at the 3‐ and 3′‐positions of the ligand.

show abstract

Luminescent metalloreceptors with pendant macrocyclic ionophores with NS2O3 donor sites: Synthesis, characterization and ion-binding property

Cited by 11 publications

References 53 publications

Supramolecular Luminescent Sensors

Supramolecular Luminescent Sensors

Inhibiting the Hydrogen Evolution Reaction (HER) with Proximal Cations: A Strategy for Promoting Selective Electrocatalytic Reduction

Functionalized Ruthenium Complexes: Selective “Turn‐on” Detection of Biologically Relevant Anionic Species

Contact Info

Product

Resources

About