Langmuir-Blodgett films of pure porphyrins

Effects of a central metal on the organization of 5,10,15,20-tetra-(p-chlorophenyl)–rare earth porphyrin hydroxyl compound at the air/water interface and in Langmuir–Blodgett films

“…Considering the uncertainty of ±5 • that comes from the polarized UV-vis method [28,31,32], the orientation angle of TbOH in pure and mixed LB films is 57 ± 5 • . A previous study [5] by Ruaudel-Teixier et al has revealed that the mean molecular area of simple tetraarylporphyrins in monolayers is approximately 2.25 nm 2 if a porphyrin ring lies in parallel with an aqueous surface and 0.90 nm 2 if a porphyrin ring lies perpendicular with respect to an aqueous surface. The structures of the monolayers before and after transfer onto solid substrates may differ due to different environments.…”

“…Since metalloporphyrins often play crucial roles in making functional materials and also as models for some biochemical processes, much effort has been concentrated on the construction of thin metalloporphyrin films [1][2][3][4][5][6][7][8][9][10]. The fabrication of the thin metalloporphyrin films has usually been achieved with the Langmuir-Blodgett (LB) and self-assembly techniques.…”

Monolayers of rod-shaped and disc-shaped liquid crystalline compounds at the air-water interface

“…So far there have only been a few reports about the spreading behaviour of discotic LCs [5,7], but much work has been done on disc-shaped molecules such as porphyrins or phthalocyanines [32][33][34][35][36][37][38][39][40][41] which do not form thermotropic mesophases. However, the formation of defined monomolecular films at the gas-water interface is uncertain in some cases, considering the published n-A diagrams.…”

Synthesis of one-dimensional silver oxide nanoparticle arrays and silver nanorods templated by Langmuir monolayers

“…Porphyrin derivatives TAPP, TDPP and TSPP (Chart 1) and n-HDP were synthesized according to the literature methods [45,46], respectively. Ethyl stearate (ES) was purchased from Aldrich.…”