Modulation of luminescence properties for [cyclometalated]-Pt^II(isocyanide) complexes upon co-crystallisation with halosubstituted perfluorinated arenes

Abstract

C–X⋯Cl–Pt Halogen bonds and πh⋯dz2[PtII] contacts led to the 2-fold increase of phosphorescence quantum yields for [cyclometalated]-PtII(isocyanide) complexes upon co-crystallisation with halosubstituted perfluorinated arenes.

Chameleonic metal-bound isocyanides: a π-donating CuI-center imparts nucleophilicity to the isocyanide carbon toward halogen bonding

“…The increasingly growing interest towards halogen bonding (abbreviated as HaB) is related to its role in crystal engineering, 1 materials science, [2][3][4] noncovalent catalysis, 5 and human physiology. 6 HaB affects the solubility, 7,8 melting points, 9 thermal expansion, [10][11][12][13] color, 14,15 and also luminescence, 4,[16][17][18][19][20][21][22][23][24][25][26][27][28] sensing, 29,30 biological, 31 or magnetic 32 properties of chemical compounds and assemblies thereof.…”

The Isocyanide Complexes cis-[MCl2(CNC6H4-4-X)2] (M = Pd, Pt; X = Cl, Br) as Tectons in Crystal Engineering Involving Halogen Bonds

“…Strategies of crystal engineering towards the design of solids with controllable structure and tunable physicochemical properties are amongst the well-recognized tools for material chemistry [1][2][3][4][5]. The emergence of halogen bonding (HaB; for reviews on HaB see references [6][7][8][9][10]) during the construction of supramolecular aggregates opens up a route for the optimisation of their valuable properties, such as catalytic activity [11][12][13][14][15], solubility [16,17], melting point [18], thermal expansion [19][20][21][22], colour [23][24][25][26][27], luminescence [28][29][30][31][32][33][34][35][36][37][38][39][40][41], sensing [42,43], biological [44], and magnetic [45] properties. Various tectons [46], including organic species or metal complex...…”

Multistimuli-Responsive Properties of Aggregated Isocyanide Cycloplatinated(II) Complexes

“… 1 , 2 , 7c , 7e , 7i , 16 On the other hand, isocyanides are versatile synthons for photoluminescent platinum complexes, which show stimuli response properties, 17 and on some occasions, the luminescence can be modulated by noncovalent interactions. 18 In this field, some chromic cycloplatinated complexes containing the strong field ligand isocyanides have been documented, 14a , 19 and it has been demonstrated that their photophysical properties can be modulated effectively by adjusting steric effects, the strength of the intermolecular interactions, or the medium. In this line, our group has reported two families of chloro-cyclometalated complexes, the benzoquinolinyl [Pt(bzq)Cl(CNR)], 14a in which isocyanide was varied, [R = tert -butylisocyanide (Bu t ); 2,6-dimethylphenyl (Xyl); 2-naphthyl (2-Np)], and the xylylisocyanide compounds, [Pt(C ∧ N)Cl(CNXyl)], in which the cyclometalated backbone was modified [HC ∧ N = 2-phenylpyridine (ppy); 2,4-difluorophenylpyridine (dfppy); and phenylquinoline (pq)], 19a aiming to examine the role of the intermolecular π···π and short- or long-range Pt···Pt stacking interactions on their structural arrays and photophysical properties.…”

“…Among chromic Pt II systems, a number of cyclometalated Pt II complexes have been developed as a means to achieve bright, colorful luminescent materials. ,,,,, On the other hand, isocyanides are versatile synthons for photoluminescent platinum complexes, which show stimuli response properties, and on some occasions, the luminescence can be modulated by noncovalent interactions . In this field, some chromic cycloplatinated complexes containing the strong field ligand isocyanides have been documented, , and it has been demonstrated that their photophysical properties can be modulated effectively by adjusting steric effects, the strength of the intermolecular interactions, or the medium.…”