Vapor‐ and Mechanical‐Grinding‐Triggered Color and Luminescence Switches for Bis(σ‐fluorophenylacetylide) Platinum(II) Complexes

Ni, Jun; Zhang, Xu; Wu, Yao; Zhang, Liyi; Chen, Xiaoming

doi:10.1002/chem.201002752

Cited by 189 publications

(86 citation statements)

References 107 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Mechanochromic materials show changes in emission colour in the presence of mechanical stimuli (for example, shearing, grinding and rubbing) because of the interruption of intermolecular interactions (for example, p-p stacking and hydrogen bonds) [6][7][8][9][10] . Vapochromic luminescence has been observed in materials that are responsive to volatile organic compounds 11,12 . Electric field is an important external stimulus.…”

mentioning

confidence: 99%

Smart responsive phosphorescent materials for data recording and security protection

et al. 2014

View full text Add to dashboard Cite

Smart luminescent materials that are responsive to external stimuli have received considerable interest. Here we report ionic iridium (III) complexes simultaneously exhibiting mechanochromic, vapochromic and electrochromic phosphorescence. These complexes share the same phosphorescent iridium (III) cation with a N-H moiety in the N^N ligand and contain different anions, including hexafluorophosphate, tetrafluoroborate, iodide, bromide and chloride. The anionic counterions cause a variation in the emission colours of the complexes from yellow to green by forming hydrogen bonds with the N-H proton. The electronic effect of the N-H moiety is sensitive towards mechanical grinding, solvent vapour and electric field, resulting in mechanochromic, vapochromic and electrochromic phosphorescence. On the basis of these findings, we construct a data-recording device and demonstrate data encryption and decryption via fluorescence lifetime imaging and time-gated luminescence imaging techniques. Our results suggest that rationally designed phosphorescent complexes may be promising candidates for advanced data recording and security protection. D ata recording, storage and security technologies have been widely utilized in economic and military fields as well as in our daily life. Smart luminescent materials that are responsive to external stimuli have received considerable attention in the construction of optical data recording and storage devices [1][2][3][4][5] . These materials have been classified on the basis of the types of external stimuli that they are responsive to. Mechanochromic materials show changes in emission colour in the presence of mechanical stimuli (for example, shearing, grinding and rubbing) because of the interruption of intermolecular interactions (for example, p-p stacking and hydrogen bonds) [6][7][8][9][10] . Vapochromic luminescence has been observed in materials that are responsive to volatile organic compounds 11,12 . Electric field is an important external stimulus. Electrochromism occurs in p-conjugated polymers because of the reversible transition between two redox states [13][14][15][16] . However, materials showing electrochromic luminescence, which is distinct luminescence colour responses to an electric field, are scarce. We envision the potential commercial applications of electrochromic luminescent materials because they can be conveniently integrated into semiconductor-based electronic devices. In addition, it is conceivable that compounds simultaneously showing mechanochromic, vapochromic and electrochromic luminescence are of great use to the development of multifunctional materials.Phosphorescent transition-metal complexes, such as those of Ir(III) and Pt(II), have been extensively studied for various photonic and electronic applications because of their rich excited-state properties, including high luminescence quantum yields, long emission lifetimes, large Stokes shifts, high photostability and various luminescence colours [17][18][19][20] . These complexes have also been utilized a...

show abstract

mentioning

confidence: 99%

Smart responsive phosphorescent materials for data recording and security protection

et al. 2014

View full text Add to dashboard Cite

show abstract

“…5) were observed in deoxygenated CH 2 Cl 2 at room temperature upon the excitation at 425 nm, but the emission intensities of platinum compounds, Pt1 and Pt2, were very weak. These emissions were assigned to a triplet MLCT as the main element, including the interligand transition (LLCT) as the minor element, according to a photophysical study that Chen's group conducted with similar platinum bipyridine compounds [23,24]. The quantum yield (/ em = 0.013) of the emission of Pt1 is higher than that (/ em = 0.008) of Pt2, and this tendency is consistent with the luminescence of the corresponding ruthenium complexes.…”

Section: Photophysical Propertiesmentioning

confidence: 52%

Synthesis and photophysical characterization of ruthenium(II) and platinum(II) complexes with bis-pyridylethynyl-phenanthroline ligands as a metalloligand

Shiotsuka

Ueno

Asano

et al. 2015

Transition Met Chem

View full text Add to dashboard Cite

Novel ruthenium complexes Ru(L)(bpy) 2 (PF 6 ) 2 and platinum organometallic complexes Pt(L)(-:-C 6-H 5 CH 3 ) 2 with bis-(pyridinyl)ethynyl-phenanthrolines (L = 3,8-bis[2-(3-pyridinyl)ethynyl]-1,10-phenanthroline or 3, 8-bis[2-(4-pyridinyl)ethynyl]-1,10-phenanthroline) that function as metalloligands by extra pyridyl units have been prepared using respective synthetic methods. These complexes have broad absorption bands assignable to the MLCT band as the main contributing factor in the 400 to 550 nm wavelength region. Furthermore, these complexes show phosphorescence centered around 680 nm upon excitation at 425 nm. These emissions were assigned to a triplet MLCTbased luminescence for the ruthenium complexes, while a triplet MLCT as the main element, including the interligand charge transfer as the minor element, was assigned for the platinum organometallic complexes. The quantum yields of the emission of the present ruthenium complexes were relatively high, and these complexes are exactly phosphorescent dyes, although the emission intensities of the platinum complexes are poor. These two types of complexes are capable of selective photophysical detection of some metal ions and can serve as metalloligands in the construction of supramolecular metallocycles.

show abstract

“…However, the number of the Pt(II) complexes showing mechanochromism is still limited. [14][15][16][17][18][19] We report here the crystal structures and photophysical properties of (2,2'-bipyridine)(imidoylamidinato)Pt(II) complexes in the solid state. + consists of Pt(II) ion, bpy, and imidoylamidinate formed by the coupling of amidine group with benzonitrile used as a reaction solvent, and it takes planar structure (Fig.…”

Section: During Furthermentioning

confidence: 99%

Highly luminescent imidoylamidinato platinum(ii) complexes formed by the coupling of 1H-pyrazole-1-carboxamidine with nitriles used as reaction solvents

et al. 2014

View full text Add to dashboard Cite

COMMUNICATION This journal is © The Royal Society of Chemistry 2014RSC Adv., 2014, 00, 1--3 | 1 2+ (R = Me, Et, Ph) generated in nitrile solution with 1H-pyrazole-1-carboxamidine. These complexes exhibit bright yellow or yellow-green luminescence in the solid state and mechanochromic behavior.Platinum(II) complexes containing aromatic amines such as α-diimines and terpyridines are known to exhibit luminescence from various excited states depending on the nature of aromatic amines and the extent of metal-metal interactions with neighboring Pt(II) ions intermolecularly or intramolecularly.

show abstract

Vapor‐ and Mechanical‐Grinding‐Triggered Color and Luminescence Switches for Bis(σ‐fluorophenylacetylide) Platinum(II) Complexes

Cited by 189 publications

References 107 publications

Smart responsive phosphorescent materials for data recording and security protection

Smart responsive phosphorescent materials for data recording and security protection

Synthesis and photophysical characterization of ruthenium(II) and platinum(II) complexes with bis-pyridylethynyl-phenanthroline ligands as a metalloligand

Highly luminescent imidoylamidinato platinum(ii) complexes formed by the coupling of 1H-pyrazole-1-carboxamidine with nitriles used as reaction solvents

Contact Info

Product

Resources

About