Synthesis, spectroscopic properties and electrochemistry of (2,9,16,23-tetrasubstituted phthalocyaninato) erbium complexes
Source abstract
Abstract
Abstract Two homoleptic bis(phthalocyaninato) erbium(III) complexes Er[Pc(β-OR/R) 4 ] 2 and two half-sandwich phthalocyaninato erbium(III) complexes (acac)Er[Pc(β-OR/R) 4 ] (OR = 1- n -pentyloxy and R = tert -butyl) have been synthesized and characterized by MALDI-TOF-MS as well as by various spectroscopic methods. The introduction of different substituents (alkoxy or alkyl groups) to the phthalocyanine rings induced changes in the spectroscopic and electrochemical properties. Although the excited states of the homoleptic double- and triple-decker complexes usually are considered to lack fluorescence, in these cases, the homoleptic bis(phthalocyaninato) erbium(III) complexes Er[Pc(β-OR/R) 4 ] 2 displayed intense fluorescence compared with the half-sandwich phthalocyaninato erbium(III) complexes (acac)Er[Pc(β-OR/R) 4 ]. For the two kinds of phthalocyaninato erbium(III) complexes, the pentyloxy-substituted complexes gave relatively intense emission compared with the tert -butyl-substituted complexes. These differences in the electronic ground state absorptions and in the excited state properties correlate with observations made from electrochemical measurements.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Porphyrin and Phthalocyanine Chemistry · Metal-Catalyzed Oxygenation Mechanisms · Photosynthetic Processes and Mechanisms
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
Show source-provided references
1. Molecular materials by self-assembly of porphyrins, phthalocyanines, and perylenes10.1002/adma.200502498 ↗
2. Lever · 1989 · vols. 1–4
3. Mckeown · 1998
4. Kadish · 2000 · vols. 1–20
5. Sandwich-type heteroleptic phthalocyaninato and porphyrinato metal complexes10.1039/cs9972600433 ↗
6. Lanthanide complexes with acetylacetonate and 5,10,15,20-tetra[para-(4-fluorobenzoyloxy)-meta-ethyloxy]-phenylporphyrin10.1016/S0379-6779(00)00574-9 ↗
7. Broadband sensitizers for erbium-doped planar optical amplifiers: review10.1364/JOSAB.21.000871 ↗
8. Enhanced luminescence of an erbium(III) ion-association ternary complex with a near-infrared dye10.1021/jp049886+ ↗
9. Controlling the nature of mixed (phthalocyaninato)(porphyrinato) rare-earth(III) double-decker complexes: the effects of nonperipheral alkoxy substitution of the phthalocyanine ligand10.1002/chem.200500733 ↗
10. Synthesis and electrochemistry of a substituted phthalocyaninato zinc10.1016/j.dyepig.2005.08.024 ↗
11. Synthesis, structure, spectroscopic properties, and electrochemistry of (1,8,15,22-tetrasubstituted phthalocyaninato)lead complexes10.1021/ic049080o ↗
12. Studies of “pinwheel-like” bis[1,8,15,22-tetrakis(3-pentyloxy)phthalocyaninato] rare earth(III) double-decker complexes10.1002/chem.200500214 ↗
13. The synthesis of 4-pentyloxy-phthalonitrile
14. The synthesis of 4-tert-butyl-phthalonitrile
15. Divay L, Barny PL, Delaire J, Loiseaux B, Laurent D. Synthesis of some erbium(III) chelates and characterization of their NIR emission properties for use in organic near infrared optical amplification waveguides. In: Proceedings of SPIE, vol. 5934; 2005.10.1117/12.616382 ↗
16. Synthesis, spectroscopic and electrochemical properties of substituted bis(phthalocyaninato) lanthanide(III) complexes10.1016/0277-5387(96)00248-3 ↗
17. Synthesis, structure, and spectroscopic and electrochemical properties of heteroleptic bis(phthalocyaninato) rare earth complexes with a C4 symmetry10.1002/hlca.200490231 ↗
18. A new synthetic route to unsymmetrical bis(phthalocyaninato)europium(III) complexes10.1016/S0020-1693(97)05716-2 ↗
19. Synthesis and spectroscopic properties of homoleptic bis[octakis(octyloxy)phthalocyaninato]rare earth(III) sandwich complexes10.1071/CH99168 ↗
20. Synthesis, spectral and mesomorphic properties of octa-alkoxy substituted phthalocyanine ligands and lanthanide complexes10.1016/S0928-4931(01)00365-4 ↗
21. Double-decker yttrium(III) complexes with phthalocyaninato and porphyrinato ligands10.1002/(SICI)1099-1409(199904)3:4<322::AID-JPP137>3.0.CO;2-6 ↗
22. Near infrared absorption spectra of lanthanide bis-phthalocyanines10.1016/0009-2614(87)80313-5 ↗
23. Synthesis and spectroscopic properties of octasubstituted (phthalocyaninato)titanium(IV) complexes10.1016/S0020-1693(96)05420-5 ↗
24. Electronic structure of phthalocyanines: theoretical investigation of the optical properties of phthalocyanine monomers, dimers, and crystals10.1063/1.458131 ↗
25. Extended Hückel molecular orbital model for lanthanide bisphthalocyanine complexes10.1016/0022-2860(95)08905-B ↗
26. Electronic structures and spectral properties of double- and triple-decker phthalocyanine complexes and a localized molecular orbital view10.1002/1099-1409(200101)5:1<87::AID-JPP304>3.0.CO;2-Q ↗
27. Spectroscopic characterization of lanthanide octaethylporphyrin sandwich complexes. effects of strong π–π interaction10.1021/ja00165a009 ↗
28. Optical studies of phthalocyanine molecules in PMMA matrix10.1016/S0167-577X(02)00394-4 ↗
29. Photophysics of lanthanide double-decker compounds with mixed octaethylporphyrinato and 2,3-naphthalocyaninato ligands10.1016/j.dyepig.2004.07.010 ↗