TY - JOUR

T1 - Water dispersible supramolecular assemblies built from luminescent hexarhenium clusters and silver(I) complex with pyridine-2-ylphospholane for sensorics

AU - Elistratova, Julia

AU - Faizullin, Bulat

AU - Shamsieva, Aliia

AU - Gerasimova, Tatiana

AU - Kashnik, Ilya V.

AU - Brylev, Konstantin A.

AU - Babaev, Vasily

AU - Kholin, Kirill

AU - Nizameev, Irek

AU - Musina, Elvira

AU - Katsyuba, Sergey

AU - Karasik, Andrey

AU - Sinyashin, Oleg

AU - Mustafina, Asiya

N1 - Publisher Copyright: © 2020 Elsevier B.V. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/5/1

Y1 - 2020/5/1

N2 - The work introduces regularities and driving forces of self-assembly of hexarhenium clusters [{Re6S8}L6]n− (L = SO3 2−, CN−, OH−) with [AgL′]+ (L′ = pyridine-2-ylphospholane) produced by dissociation of [Ag2L′2]2+ in aqueous solutions. The formation of nano-sized Re6[sbnd]Ag assemblies is detected by the spectral measurements in the solutions and by the solid-state analysis of the separated colloids. The nature of L is highlighted as the main factor affecting the assembly. The poor affinity of the SO3 2− ligands to Ag+ restricts the assembly of [{Re6S8}(SO3)6]10− with the silver(I) complexes. [{Re6S8}(OH)6]4− is more promising candidate for the heterometallic assembly contributed by both counter-ion binding and coordination bonds, while the efficient coordination of Ag+ via the nitrogen of the cyanide ligands of [{Re6S8}(CN)6]4− is the main driving force for the Re6[sbnd]Ag assembly. The stronger impact of [Ag2L′2]2+ relative to Ag+ cations on the formation of Re6[sbnd]Ag assemblies in aqueous solutions, as well as the presence of L′ in the separated colloidal phase, indicate the important role of the L′ ligand in the studied supramolecular systems. The cluster-centered luminescence serves as signaling system at the binding of glutathione, cysteine and dithiothreitol with Ag+ ions of the heterometallic assemblies. The assemblies based on [{Re6S8}(CN)6]4− are able to discriminate glutathione versus cysteine, while the assemblies formed by [{Re6S8}(OH)6]4− give the unselective luminescence response on the both biothiols at the concentration level of 2 μM.

AB - The work introduces regularities and driving forces of self-assembly of hexarhenium clusters [{Re6S8}L6]n− (L = SO3 2−, CN−, OH−) with [AgL′]+ (L′ = pyridine-2-ylphospholane) produced by dissociation of [Ag2L′2]2+ in aqueous solutions. The formation of nano-sized Re6[sbnd]Ag assemblies is detected by the spectral measurements in the solutions and by the solid-state analysis of the separated colloids. The nature of L is highlighted as the main factor affecting the assembly. The poor affinity of the SO3 2− ligands to Ag+ restricts the assembly of [{Re6S8}(SO3)6]10− with the silver(I) complexes. [{Re6S8}(OH)6]4− is more promising candidate for the heterometallic assembly contributed by both counter-ion binding and coordination bonds, while the efficient coordination of Ag+ via the nitrogen of the cyanide ligands of [{Re6S8}(CN)6]4− is the main driving force for the Re6[sbnd]Ag assembly. The stronger impact of [Ag2L′2]2+ relative to Ag+ cations on the formation of Re6[sbnd]Ag assemblies in aqueous solutions, as well as the presence of L′ in the separated colloidal phase, indicate the important role of the L′ ligand in the studied supramolecular systems. The cluster-centered luminescence serves as signaling system at the binding of glutathione, cysteine and dithiothreitol with Ag+ ions of the heterometallic assemblies. The assemblies based on [{Re6S8}(CN)6]4− are able to discriminate glutathione versus cysteine, while the assemblies formed by [{Re6S8}(OH)6]4− give the unselective luminescence response on the both biothiols at the concentration level of 2 μM.

KW - Biothiols

KW - Heterometallic assembly

KW - Hexarhenium clusters

KW - Luminescence

KW - Silver(I) complex

KW - Supramolecular systems

KW - PHOTOLUMINESCENCE

KW - CHALCOCYANIDE CLUSTERS

KW - IONS

KW - RELAXIVITY

KW - AQUEOUS-SOLUTION

KW - SE

KW - BRIDGED COORDINATION POLYMERS

KW - AG(I)

KW - LIGAND

KW - FLUORESCENT-PROBE

UR - http://www.scopus.com/inward/record.url?scp=85081674003&partnerID=8YFLogxK

U2 - 10.1016/j.molliq.2020.112853

DO - 10.1016/j.molliq.2020.112853

M3 - Article

AN - SCOPUS:85081674003

VL - 305

JO - Journal of Molecular Liquids

JF - Journal of Molecular Liquids

SN - 0167-7322

M1 - 112853

ER -