Synthesis and characterization of four novel mixed (porphyrinato)(phthalocyaninato) sandwich-type europium(III) complexes with [tetrakis(4-chlorophenyl)porphyrinato] and diversely substituted phthalocyaninato ligands

Lu, Fanli; Cui, Jian-Zhong; Yang, Qiuhua

doi:10.1016/j.ica.2007.02.002

Cited by 5 publications

(2 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…IR spectroscopy has proved to be useful in characterizing the nature of the Pc ligand in tetrapyrrole sandwich complexes. The intense absorption at 1310–1320 cm –1 in neutral bis(phthalocyaninato) and mixed porphyrinatophyhalocyaninato rare earth(III) complexes containing one unpaired electron has been assigned to the Pc – IR marker band 34. The typical IR marker band of the monoanion radical Pc – for 2 shows a strong band at 1320 cm –1 and is attributed to pyrrole C=C stretchings.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, Characterization, Nonlinear Absorption and Electrochromic Properties of Double‐Decker Octakis(mercaptopropylisobutyl‐POSS)phthalocyaninatolanthanide(III) Complexes

et al. 2008

View full text Add to dashboard Cite

In this study, the sandwich‐like bis(phthalocyaninato)lanthanide(III) complexes MPc2 (M = Lu, Gd) have been prepared. The reaction of 4,5‐bis(mercaptopropylisobutyl‐POSS)phthalonitrile (1) [POSS: polyhedral oligomeric silsesquioxane] with lithium gave the dilithium octakis(mercaptopropylisobutyl‐POSS)phthalocyaninate which was further reacted in situ with Lu(OAc)3·3H2O and Gd(OAc)3·4H2O in 1‐pentanol to give compounds 2 and 3, respectively. The structure of the target compounds was confirmed by elemental analysis, UV/Vis and IR spectroscopic as well as MALDI‐TOF mass spectrometric techniques. The nonlinear absorption andoptical limiting (OL) performance of 2 and 3 are investigated by means of the Z‐scan technique. While 2 exhibits a good nonlinear absorption, 3 possesses a low nonlinear absorption. The ratio of the excited‐state to ground‐state absorption cross sections, κ, the effective nonlinear absorption coefficient, βeff, and the energy density, Fsat, were determined for 2. The results indicated that 2 possesses a good combination of optical limiting parameters.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)

show abstract

Section: Resultsmentioning

confidence: 99%

Synthesis, Characterization, Nonlinear Absorption and Electrochromic Properties of Double‐Decker Octakis(mercaptopropylisobutyl‐POSS)phthalocyaninatolanthanide(III) Complexes

et al. 2008

View full text Add to dashboard Cite

show abstract

“…12 A series of europium heteroleptic double-deckers were also synthesized with the application of metal-free phthalocyanines. 13 Application of microwave irradiation facilitated the synthesis of heteroleptic lutetium (porphyrinato)(phthalocyaninate), which is formed from lutetium monoporphyrinate and free-base phthalocyanine. 14 In the case of lanthanide double-decker heteroleptic complexes with octa-b-ethylporphyrinato-and naphthalocyaninatoligands (OEP and Nc, respectively) the procedure was slightly simplified.…”

Section: Introductionmentioning

confidence: 99%

Selective one-step synthesis of triple-decker (porphyrinato)(phthalocyaninato) early lanthanides: the balance of concurrent processes

2011

View full text Add to dashboard Cite

An effective one-step approach for the preparation of (porphyrinato)(phthalocyaninato) early lanthanides of type [Br(4)TPP]Ln[(15C5)(4)Pc]Ln[Br(4)TPP], where Br(4)TPP = 5,10,15,20-tetrakis-(4-bromophenyl)-porphyrinato-ligand, (15C5)(4)Pc = tetrakis-(15-crown-5)-phthalocyaninato-ligand and Ln = La, Pr, Nd or Eu, is developed. The influence of various factors on the reaction pathway and yields of the complexes is investigated in detail. The developed protocol is found to be general for the early lanthanide subgroup. Variation of the synthetic conditions allowed the determination and isolation of possible side-products, namely heteroleptic double-deckers [Br(4)TPP]Ln[(15C5)(4)Pc] (Ln = Nd, Eu) and triple-decker [Br(4)TPP]Nd[(15C5)(4)Pc]Nd[(15C5)(4)Pc]. The peculiarities of the NMR lanthanide-induced shifts (LIS) of resonances of the synthesized triple-decker complexes are precisely investigated. The isostructurality of the synthesized complexes within the series as well as isostructurality with previously synthesized compounds is demonstrated in terms of two-nuclei analysis of LIS.

show abstract

Lanthanide(III) Bis(phthalocyaninato)–[60]Fullerene Dyads: Synthesis, Characterization, and Photophysical Properties

Ballesteros

Torre

Shearer

et al. 2009

Chemistry A European J

View full text Add to dashboard Cite

A novel series of double‐decker lanthanide(III) bis(phthalocyaninato)–C60 dyads [LnIII(Pc)(Pc′)]–C60 (M=Sm, Eu, Lu; Pc=phthalocyanine) (1 a–c) have been synthesized from unsymmetrically functionalized heteroleptic sandwich complexes [LnIII(Pc)(Pc′)] (Ln=Sm, Eu, Lu) 3 a–c and fulleropyrrolidine carboxylic acid 2. The sandwich complexes 3 a–c were obtained by means of a stepwise procedure from unsymmetrically substituted free‐base phthalocyanine 5, which was first transformed into the monophthalocyaninato intermediate [LnIII(acac)(Pc)] and further reacted with 1,2‐dicyanobenzene in the presence of 1,8‐diazabicyclo[5.4.0]undec‐7‐ene (DBU). 1H NMR spectra of the bis(phthalocyaninato) complexes 3 a–c and dyads 1 a–c were obtained by adding hydrazine hydrate to solutions of the complexes in [D7]DMF, a treatment that converts the free radical double‐deckers into the protonated species, that is, [LnIII(Pc)(Pc′)H] and [LnIII(Pc)(Pc′)H]–C60. The electronic absorption spectra of 3 a–c and 1 a–c in THF exhibit typical transitions of free‐radical sandwich complexes. In the case of dyads 1 a–c, the spectra display the absorption bands of both constituents, but no evidence of ground‐state interactions could be appreciated. When the UV/Vis spectra of 3 a–c and 1 a–c were recorded in DMF, typical features of the reduced forms were observed. Cyclic voltammetry studies for 3 a–c and 1 a–c were performed in THF. The electrochemical behavior of dyads 1 a–c is almost the exact sum of the behavior of the components, namely the double‐decker [LnIII(Pc)(Pc′)] and the C60 fullerene, thus confirming the lack of ground‐state interactions between the electroactive units. Photophysical studies on dyads 1 a–c indicate that only after irradiation at 387 nm, which excites both C60 and [LnIII(Pc)(Pc′)] components, a photoinduced electron transfer from the [LnIII(Pc)(Pc′)] to C60 occurs.

show abstract

Synthesis and characterization of four novel mixed (porphyrinato)(phthalocyaninato) sandwich-type europium(III) complexes with [tetrakis(4-chlorophenyl)porphyrinato] and diversely substituted phthalocyaninato ligands

Cited by 5 publications

References 27 publications

Synthesis, Characterization, Nonlinear Absorption and Electrochromic Properties of Double‐Decker Octakis(mercaptopropylisobutyl‐POSS)phthalocyaninatolanthanide(III) Complexes

Synthesis, Characterization, Nonlinear Absorption and Electrochromic Properties of Double‐Decker Octakis(mercaptopropylisobutyl‐POSS)phthalocyaninatolanthanide(III) Complexes

Selective one-step synthesis of triple-decker (porphyrinato)(phthalocyaninato) early lanthanides: the balance of concurrent processes

Lanthanide(III) Bis(phthalocyaninato)–[60]Fullerene Dyads: Synthesis, Characterization, and Photophysical Properties

Contact Info

Product

Resources

About