Photoluminescence study of new lanthanide complexes with benzeneseleninic acids

Souza, Ana Paula Oliveira; Rodrigues, Lucas Carvalho Veloso; Brito, Hermi F.; Alves, Severino; Malta, O.L.

doi:10.1016/j.jlumin.2009.08.009

Cited by 28 publications

(12 citation statements)

References 29 publications

(36 reference statements)

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“…The europium ion was used as a spectroscopic probe for the symmetry integrity investigation of the first coordination sphere. Once the relative intensities and the maximum Stark splitting of 7 F J (J = 0, 1, 2, 3 and 4) levels, which are dependent upon the extent in which the level degeneracy (2J+1) is removed by the symmetry of the first coordination sphere [44,45]. …”

Section: Resultsmentioning

confidence: 99%

New Composites LnBDC@AC and CB[6]@AC: From Design toward Selective Adsorption of Methylene Blue or Methyl Orange

et al. 2017

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New porous composites LnBDC@AC (AC = Activated carbon, Ln = Eu and Gd and BDC = 1,4-benzenedicaboxylate) and CB[6]@AC (CB[6] = Cucurbit[6]uril) were obtained using hydrothermal route. The LnBDC and CB[B] are located inside the pore of the carbon materials as was observed in SEM-EDS, XRPD and FT-IR analysis. Porosimetry analysis showed values typically between AC and LnBDC material, with pore size and surface area, respectively, 29,56 Å and 353.98 m2g-1 for LnBDC@AC and 35,53 Å and 353.98 m2g-1 for CB[6]@AC. Both materials showed good absorptive capacity of metil orange (MO) and methylene blue (MB) with selectivity as a function of pH. For acid pH, both materials present selectivity by MB and alkaline pH for MO, with notable performance for CB[6]@AC. Additionally, europium luminescence was used as structural probe to investigate the coordination environment of Eu3+ ions in the EuBDC@AC composite after adsorption experiment.

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Section: Resultsmentioning

confidence: 99%

New Composites LnBDC@AC and CB[6]@AC: From Design toward Selective Adsorption of Methylene Blue or Methyl Orange

et al. 2017

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“…Other investigations reporting the use and/or development of theoretical models or methodologies have been discussed in the literature [8,12,13,15,17,28,43,55,56,86,[199][200][201][202][203][204][205][206][207].…”

Section: Theoretical Methods and Methodologiesmentioning

confidence: 99%

“…Theoretical and phenomenological treatments of ET processes involving lanthanide-based systems have been continuously developed by Prof. Malta, who has greatly enhanced the general understanding of such processes [8][9][10][11][12][13][14]. The references cited here are representative of the last decade only, which is the time range discussed in this review, although one should not forget that Malta's contributions already date from almost four decades.…”

Section: Energy Transfermentioning

confidence: 99%

Recent advances in lanthanide spectroscopy in Brazil

Silva

Capelo

Albuquerque

2016

Journal of Luminescence

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a b s t r a c tThis rev Q2 iew discusses recent advances in lanthanide spectroscopy involving luminescence applications carried out in Brazil. The revised topics include glasses, sol-gel, light-emitting diodes, nanoparticles, metal-organic frameworks, coordination polymers, thin films, energy transfer processes, upconversion and development of new theoretical tools. The important role played by Prof. Oscar L. Malta on this subject is evidenced by his many contributions to the broad range of investigations reported here and this review is dedicated to him, on the occasion of his 60th birthday.& 2015 Published by Elsevier B.V.

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“…124 Além disso a presença dessa transição no espectro de emissão indica que a simetria ao redor do íon central é baixa (tipo C s , C n ou C nv ). 151 Outra evidência espectroscópica da baixa simetria do complexo é a alta intensidade da transição 5 D 0 → 7 F 4 .…”

Section: Polarização Cruzadaunclassified

“…132 Tempo Conforme determinado por Marita Mehlstäubl, 132 o estado tripleto do ligante ( 3 π-π) (5) , obtido a partir da transição 0-0, encontra-se em 21505 cm -1 e, portanto, acima do nível emissor do íon Eu 3+ (17500 cm -1 ). 151 Para minimizar a transferência reversa da energia, a diferença de energia entre o nível doador e o aceitador deve ser superior a 3500 cm -1 . 26 No complexo estudado esse valor é de 4005 cm -1 .…”

Section: 152unclassified

Síntese e caracterização de materiais híbridos luminescentes obtidos via sol-gel

Botelho¹

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Ao Professor. Dr. Rodrigo Q. Albuquerque, pela co-orientação no desenvolvimento da parte teórica e pelas sugestões sempre muito bem vindas. Aos colegas dos grupos do Prof. H. Eckert, da Prof. Luiza De Cola e da profa. A. S. S. de Camargo, que muito contribuíram para que este trabalho fosse desenvolvido. Ao colega de laboratório e cervejas Thiago B. de Queiroz (Caboclo), que contribuiu intensamente neste trabalho. Aos amigos de Sanca que estavam sempre dispostos a tomar uma cerveja quando eu não aguentava mas entrar no lab. Destaco aqui a Bixete e o Novato. Aos meu Bixinhos e a Chris que tão sempre me acompanhando de "perto". Ao Instituto de Física de São Carlos, instituição na qual realizei o programa de doutoramento. À Universidade de Muenster, por prover todas as condições necessárias para que este projeto fosse concretizado. Aos meus familiares e amigos, pelo apoio incondicional. Em especial aos meus pais e minha irmã por me ajudarem em tudo que precisei. Ao meu Amorrr, por sempre me incentivar, me ajudar, por me amar, por tá sempre comigo, por viajar bem muito pra me ver e por aceitar a coisinha que resolveu ir pra Brasília ficar com ele! À Fundação de Amparo a Pesquisa do Estado de São Paulo (FAPESP), pela concessão da bolsa, sem a qual a realização do meu doutorado seria inviável. RESUMO Botelho, M. B. S. Síntese e caracterização de materiais híbridos luminescentes obtidos via sol-gel. 2013.198 p. Tese (Doutorado

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Photoluminescence study of new lanthanide complexes with benzeneseleninic acids

Cited by 28 publications

References 29 publications

New Composites LnBDC@AC and CB[6]@AC: From Design toward Selective Adsorption of Methylene Blue or Methyl Orange

New Composites LnBDC@AC and CB[6]@AC: From Design toward Selective Adsorption of Methylene Blue or Methyl Orange

Recent advances in lanthanide spectroscopy in Brazil

Síntese e caracterização de materiais híbridos luminescentes obtidos via sol-gel

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