Origin of the Aggregation‐Induced Phosphorescence of Platinum(II) Complexes: The Role of Metal–Metal Interactions on Emission Decay in the Crystalline State

The copper subgroup metal ions in the oxidation state +1 are classical candidates for the aggregation via non-covalent metal–metal interactions, which are supported by a number of the bridging ligands....

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Self-assembly of alkynylplatinum(II) terpyridine amphiphiles into nanostructures via steric control and metal–metal interactions

Proceedings of the National Academy of Sciences ◽

10.1073/pnas.1601673113 ◽

2016 ◽

Vol 113 (11) ◽

pp. 2845-2850 ◽

Cited By ~ 57

Author(s):

Sammual Yu-Lut Leung ◽

Keith Man-Chung Wong ◽

Vivian Wing-Wah Yam

Keyword(s):

Self Assembly ◽

Phenylene Ethynylene ◽

Temperature Dependent ◽

Visible Absorption ◽

Metal Interactions ◽

Assembly Mechanism ◽

Metal Metal ◽

End Capping ◽

Supramolecular Polymerization

A series of mono- and dinuclear alkynylplatinum(II) terpyridine complexes containing the hydrophilic oligo(para-phenylene ethynylene) with two 3,6,9-trioxadec-1-yloxy chains was designed and synthesized. The mononuclear alkynylplatinum(II) terpyridine complex was found to display a very strong tendency toward the formation of supramolecular structures. Interestingly, additional end-capping with another platinum(II) terpyridine moiety of various steric bulk at the terminal alkyne would lead to the formation of nanotubes or helical ribbons. These desirable nanostructures were found to be governed by the steric bulk on the platinum(II) terpyridine moieties, which modulates the directional metal−metal interactions and controls the formation of nanotubes or helical ribbons. Detailed analysis of temperature-dependent UV-visible absorption spectra of the nanostructured tubular aggregates also provided insights into the assembly mechanism and showed the role of metal−metal interactions in the cooperative supramolecular polymerization of the amphiphilic platinum(II) complexes.

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Noncovalent Metal−Metal Interactions: The Crucial Role of London Dispersion in a Bimetallic Indenyl System

Journal of the American Chemical Society ◽

10.1021/ja905617g ◽

2009 ◽

Vol 131 (40) ◽

pp. 14156-14157 ◽

Cited By ~ 33

Author(s):

Tobias Schwabe ◽

Stefan Grimme ◽

Jean-Pierre Djukic

Keyword(s):

Crucial Role ◽

Metal Interactions ◽

Metal Metal ◽

London Dispersion

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Investigating the Role of Grain Boundaries in Interface Reactions

MRS Proceedings ◽

10.1557/proc-343-181 ◽

1994 ◽

Vol 343 ◽

Cited By ~ 5

Author(s):

FranÇois M d'Heurle ◽

Patrick Gas ◽

Jean Philibert

Keyword(s):

Grain Boundary ◽

Grain Boundaries ◽

Review Of The Literature ◽

Phase Growth ◽

Metal Interactions ◽

Interface Reactions ◽

Metal Metal ◽

Kinetics Of ◽

Short Section

ABSTRACTThe paper is built around a nonexhaustive review of the literature on the role of grain boundaries in reactive phase formation. Examples are chosen to illustrate these effects in silicide and oxide growths, and later on in metal-metal interactions. A short section deals with the effect of grain boundaries and grain boundary adsorption of impurities on the kinetics of growth and on the morphology of the growing layer. Some attempts at understanding the mechanisms of phase growth from the tracking of isotopes are briefly analyzed.

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Metal-Metal Cooperative Bond Activation by Heterobimetallic Alkyl, Aryl, and Acetylide PtII/CuI Complexes

10.26434/chemrxiv.11742687 ◽

2020 ◽

Author(s):

Shubham Deolka ◽

Orestes Rivada Wheelaghan ◽

Sandra Aristizábal ◽

Robert Fayzullin ◽

Shrinwantu Pal ◽

...

Keyword(s):

Alkyl Group ◽

Bond Activation ◽

Bond Cleavage ◽

Terminal Alkyne ◽

Alkyl Aryl ◽

Metal Metal ◽

The Stability ◽

Selective Formation ◽

Organoplatinum Compounds

We report selective formation of heterobimetallic PtII/CuI complexes that demonstrate how facile bond activation processes can be achieved by altering reactivity of common organoplatinum compounds through their interaction with another metal center. The interaction of the Cu center with Pt center and with a Pt-bound alkyl group increases the stability of PtMe2 towards undesired rollover cyclometalation. The presence of the CuI center also enables facile transmetalation from electron-deficient tetraarylborate [B(ArF)4]- anion and mild C-H bond cleavage of a terminal alkyne, which was not observed in the absence of an electrophilic Cu center. The DFT study indicates that the role of Cu center acts as a binding site for alkyne substrate, while activating its terminal C-H bond.

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