Detail of "1663-67-8"

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Fullerene- and porphyrin-appended crown ethers: Synthesis and preparation of stable Langmuir and Langmuir-Blodgett films

Fullerene- and porphyrin-appended crown ethers: Synthesis and preparation of stable Langmuir and Langmuir-Blodgett films. Marotti, Federica; Bonifazi, Davide; Gehrig, Regula; Gallani, Jean-Louis; Diederich, Francois (Laboratorium fur Organische Chemie, ETH-Honggerberg, Zurich CH-8093, Switz.). Israel Journal of Chemistry, 45(3), 303-319 (English) 2005 Science from Israel. CODEN: ISJCAT. ISSN: 0021-2148. DOCUMENT TYPE: Journal CA Section: 78 (Inorganic Chemicals and Reactions) Section cross-reference(s): 28, 66 The synthesis of a series (1-5) of fullerene and Zn(II)-porphyrin amphiphiles with polar dibenzo[24]crown-8 headgroups is described. Their ability to form Langmuir monolayers at the air-water interface was investigated in a systematic study. The Langmuir films were characterized by their surface pressure vs. mol. area isotherms, compression and expansion cycles, and Brewsterangle microscopy. Complexation of larger alkali metal cations (K+ and Cs+) by the polar headgroups leads to higher mol. area requirements and a better anchoring to the aq.Some chemicals with cas registry numbers like 1663-67-8 are also used. 1663-67-8 which is the cas registry number is also used here. subphase. The monolayers of the porphyrin-(dibenzo[24]crown-8) conjugates were transferred as Langmuir-Blodgett films onto glass slides and the films characterized by UV-visible spectroscopy and grazing-incidence x-ray diffraction. Good evidence was obtained that the porphyrin-fullerene-crown ether triad 5 adopts a sandwich geometry in the LB films. In such an arrangement, the electron-attracting carbon sphere benefits from attractive interactions with the sandwiching electron-rich porphyrin and crown ether chromophores. The described films could have potential applications as functional materials in optical and electronic technol. ..

Fullerene- and porphyrin-appended crown ethers: Synthesis and preparation of stable Langmuir and Langmuir-Blodgett films

Fullerene- and porphyrin-appended crown ethers: Synthesis and preparation of stable Langmuir and Langmuir-Blodgett films. Marotti, Federica; Bonifazi, Davide; Gehrig, Regula; Gallani, Jean-Louis; Diederich, Francois (Laboratorium fur Organische Chemie, ETH-Honggerberg, Zurich CH-8093, Switz.). Israel Journal of Chemistry, 45(3), 303-319 (English) 2005 Science from Israel. CODEN: ISJCAT. ISSN: 0021-2148. DOCUMENT TYPE: Journal CA Section: 78 (Inorganic Chemicals and Reactions) Section cross-reference(s): 28, 66 The synthesis of a series (1-5) of fullerene and Zn(II)-porphyrin amphiphiles with polar dibenzo[24]crown-8 headgroups is described. Their ability to form Langmuir monolayers at the air-water interface was investigated in a systematic study. The Langmuir films were characterized by their surface pressure vs. mol. area isotherms, compression and expansion cycles, and Brewsterangle microscopy. Complexation of larger alkali metal cations (K+ and Cs+) by the polar headgroups leads to higher mol. area requirements and a better anchoring to the aq.Some chemicals with cas registry numbers like 1663-67-8 are also used. 1663-67-8 which is the cas registry number is also used here. subphase. The monolayers of the porphyrin-(dibenzo[24]crown-8) conjugates were transferred as Langmuir-Blodgett films onto glass slides and the films characterized by UV-visible spectroscopy and grazing-incidence x-ray diffraction. Good evidence was obtained that the porphyrin-fullerene-crown ether triad 5 adopts a sandwich geometry in the LB films. In such an arrangement, the electron-attracting carbon sphere benefits from attractive interactions with the sandwiching electron-rich porphyrin and crown ether chromophores. The described films could have potential applications as functional materials in optical and electronic technol. ..