On/off luminescence vapochromic selective sensing of benzene and its methylated derivatives by a trinuclear silver(<scp>i</scp>) pyrazolate sensor

Rawashdeh‐Omary, Manal A.; Rashdan, Maher D.; Dharanipathi, Shylaja; Elbjeirami, Oussama; Ramesh, Prashanth; Dias, H. V. Rasika

doi:10.1039/c0cc03964k

Cited by 98 publications

(71 citation statements)

References 25 publications

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“…43 These metallacycles have interesting photophysical properties with potential applications as molecular light-emitting devices. 44 Closely related Cu(I) 45 and Ag(I) 46 metallatriangles ( 15 ) of the fluorinated triazolate ligand have also been synthesized using the corresponding metal(I) oxides and the triazole. Other molecular triangles have also been reported, in which 4,7-phenanthroline acts as a rigid 60° donor occupying the corners while the linear phenyl bridged dipalladium fragment spans the sides of triangle 16 .…”

Section: Two-dimensional (2d) Ensemblesmentioning

confidence: 99%

Supramolecular Coordination: Self-Assembly of Finite Two- and Three-Dimensional Ensembles

2011

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Section: Two-dimensional (2d) Ensemblesmentioning

confidence: 99%

Supramolecular Coordination: Self-Assembly of Finite Two- and Three-Dimensional Ensembles

2011

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“…7,14 Particularly intriguing are examples in which the extent of metal−metal interaction changes upon incorporation of solvents into the crystalline lattice. 7,15 Such complexes can display so-called vapochromic 15e,h−j,n,16 and/or vapoluminescent 13m,15d,f,g,o−r, 17 behavior, in which diffusion of volatile organic compounds into voids or channels in the crystal structure induces changes in color or luminescence properties, respectively. Because these phenomena are potentially useful in the design of sensors, 15o,18 understanding the factors that favor channeled or porous structures containing metallophilic interactions is an important goal.…”

Section: ■ Introductionmentioning

confidence: 99%

Interplay of Metallophilic Interactions, π–π Stacking, and Ligand Substituent Effects in the Structures and Luminescence Properties of Neutral Pt^IIand Pd^IIAryl Isocyanide Complexes

et al. 2012

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Packing interactions in the crystal structures of a series of cis-M(CNAr)(2)Cl(2) complexes (M = Pt, Pd; Ar = substituted phenyl) were examined and correlated with the luminescence properties of the Pt complexes. The structures of the PhNC and p-tolyl isocyanide complexes exhibit extended chains of metallophilic interactions with M···M distances of 3.24-3.25 and 3.34 Å, respectively, with nearly isostructural Pt and Pd compounds. Both structure types contain void channels running parallel to the M···M chains. The channels are 3-4 Å wide and vacant for the phenyl structures, while those in the p-tolyl structures are up to 7.6 Å wide and contain water. These channeled structures are stabilized by a combination of metallophilic bonding and aryl π-π stacking interactions. The Pt structure with 4-F substituents also features extended Pt···Pt chains, but with longer 3.79 Å distances alternating with shorter 3.37 Å contacts. Structures with 4-CF(3) and 4-OMe substituents exhibit mostly isolated dimers of M···M contacts. In complexes with 2,6-dimethylphenyl isocyanide, steric hindrance precludes any short M···M contacts. The primary effect of aryl substitution is to provide alternative packing motifs, such as CF(3)···π and CH(3)···π interactions, that either augment or disrupt the combination of metallophilic contacts and π-π stacking needed to stabilize extended M···M chains. Differences in the Pt and Pd structures containing 4-F and 4-OMe substituents are consistent with a higher driving force for metallophilic interactions for Pt versus Pd. The M-C and M-Cl bond distances indicate a slightly higher trans influence for aryl isocyanides bound to Pt versus Pd. The three extended Pt···Pt chain structures display luminescence assignable to (dσ*→pσ) excited states, demonstrating the existence of substantial orbital communication along the metal-metal chains. Face-indexing shows that the preferred crystal growth axis is along the metal-metal chains for the luminescent structures. Variable temperature structural studies showed that both M···M and π-π interactions contract upon cooling. Overall, this study suggests that synergy with π-π and other interactions is necessary to stabilize extended M···M chain structures. Thus, efforts to design functional materials based on metallophilic bonding must consider the full array of available packing motifs.

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“…[17] There have been many reports of organometallic and coordination complexes of Ru, [18] Sn, [19] Pt/Pd, [20] Cu, [21] Zn, [22] Au, [23] Ag, [24] and Re/Co [25] that have been used in vapor-responsive luminescent materials. [17] There have been many reports of organometallic and coordination complexes of Ru, [18] Sn, [19] Pt/Pd, [20] Cu, [21] Zn, [22] Au, [23] Ag, [24] and Re/Co [25] that have been used in vapor-responsive luminescent materials.…”

Section: Introductionmentioning

confidence: 99%

Aggregation‐Induced Emission Activity in Iridium(III) Diimine Complexes: Investigations of Their Vapochromic Properties

et al. 2014

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Two iridium(III) diimine complexes [mono(1,10-phenanthroline)bis(triphenylphosphine)(dihydrido)iridium(III) hexafluorophosphate (1) and mono(1,10-phenanthroline)bis(triphenylphosphine)(hydrido)(chloro)iridium(III) hexafluorophosphate (2)] have been synthesized from a single two-step reaction. The structures of 1 and 2 both adopt distorted octahedral geometries, as established by single-crystal X-ray diffraction. The complexes, upon irradiation with UV light at 365 nm, emit faint light in solution and bright light in the solid state. The ground-and excited-state properties of these complexes were investigated through density functional theory (DFT) and time-dependent DFT calculations. The calculated energies for the transitions from the ground state to the singlet and triplet excited states were close to those de-

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On/off luminescence vapochromic selective sensing of benzene and its methylated derivatives by a trinuclear silver(i) pyrazolate sensor

Cited by 98 publications

References 25 publications

Supramolecular Coordination: Self-Assembly of Finite Two- and Three-Dimensional Ensembles

Supramolecular Coordination: Self-Assembly of Finite Two- and Three-Dimensional Ensembles

Interplay of Metallophilic Interactions, π–π Stacking, and Ligand Substituent Effects in the Structures and Luminescence Properties of Neutral Pt^IIand Pd^IIAryl Isocyanide Complexes

Aggregation‐Induced Emission Activity in Iridium(III) Diimine Complexes: Investigations of Their Vapochromic Properties

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On/off luminescence vapochromic selective sensing of benzene and its methylated derivatives by a trinuclear silver(i) pyrazolate sensor

Cited by 98 publications

References 25 publications

Supramolecular Coordination: Self-Assembly of Finite Two- and Three-Dimensional Ensembles

Supramolecular Coordination: Self-Assembly of Finite Two- and Three-Dimensional Ensembles

Interplay of Metallophilic Interactions, π–π Stacking, and Ligand Substituent Effects in the Structures and Luminescence Properties of Neutral PtIIand PdIIAryl Isocyanide Complexes

Aggregation‐Induced Emission Activity in Iridium(III) Diimine Complexes: Investigations of Their Vapochromic Properties

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Interplay of Metallophilic Interactions, π–π Stacking, and Ligand Substituent Effects in the Structures and Luminescence Properties of Neutral Pt^IIand Pd^IIAryl Isocyanide Complexes