Journal
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Volume 31, Issue 5, Pages 950-953Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.msec.2011.02.020
Keywords
Phthalocyanine; Porphyrin; Rare earth metals; Interfacial assembly; Coordination
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Funding
- National Science Foundation of China [20931001]
- Fundamental Research Funds for the Central Universities
- Key Laboratory of Colloid Interface Chemistry of Ministry of Education of China
- Science Foundation of Shandong Provincial Education Department [J08LC11]
- Beijing Natural Science Foundation [2102030]
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Interfacial assembly of sandwich mixed (phthalocyaninato)(porphyrinato) rare earth triple-decker complexes [(Pc)Eu(Pc)Eu(TPyP)] (1) and [(TPyP)Sm(Pc)Sm(TPyP)] (2) (Pc = phthalocyaninate, TPyP = meso-tetrakis(4-pyridyl)porphyrinate) has been comparatively studied at the air/pure water and the air/CdCl(2) aqueous solution subphase interfaces. Surface pressure-area isotherms revealed the remarkable increase of limiting mean molecular area of the triple-deckers with the presence of Cd(2+), suggesting the occurrence of in situ interfacial coordination. The formation of coordination bonds between the pyridyl groups of TPyP macrocycles in the triple-deckers and Cd(2+) ions from the subphase was further supported by FT-IR spectroscopic data. Electronic absorption measurements showed the formation of J-aggregates of the triple-decker molecules in the interfacial assembled films. (C) 2011 Elsevier B.V. All rights reserved.
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