Monolayers organized organic

Schematic representation of the monolayer organization of amphiphilic dendrimers on the water surface.

Methods for Molecular Monolayer Organization on Device Surfaces. 219... 

Sullivan TP Huck WTS, Reactions on monolayers Organic synthesis in two dimensions, Eur. J. Org. Chem., 2003, 17-29. 

Figure 4.3 Schematic representation of a simple monolayer organic light-emitting diode (OLED) incorporating an electroluminescent material between a transparent anode and a cathode.

Monolayer Organic Light-Emitting Diodes Using LMMMs ... 

Chowdhury et al. demonstrated Rhodamine 123 (Rh 123) monolayer organized on the Ag island film by the LB techniques. Results showed that the Rh 123 molecules in a monolayer on the Ag island film offered a high SERS activity. The huge SERS enhancement intensity confirms the charge transfer interaction between the Rh 123 and the Ag island film by physisorption of Rh 123 on the Ag island film [48]. 

Fig. 2 The construction of a polymer-cushioned lipid bilayer membrane. (A) Architecture constructed in a sequential way first, onto the functionalized substrate a polymer layer (cushion) is deposited by adsorption from solution and covalent binding, followed by the (partial) covalent attachment of a lipid monolayer containing some anchor lipids as reactive elements (B) able to couple the whole monolayer to the polymer cushion. (C) Alternatively, a lipopolymer monolayer, organized, e.g., at the water-air interface can be co-spread with regular low-mass amphiphiles and then transferred as a mixed monolayer onto a solid support, prefunctionalized with reactive groups, able to bind covalently to the polymer chains of the lipopolymer molecules, (B). (D) By a fusion step (or a Langmuir Schaefer transfer) the distal lipid monolayer completes the polymer-tethered membrane architecture...

C. D. Bain, A New Glass of Self-Assembled Monolayers Organic Thiols on Gallium Arsenide, Adv. Mater. 1992, 4(9), 591-594. 

We conclude that the diffraction pattern obtained is from the polypyrrole produced at the air-water interface. Further, that this monolayer is in fact dictated into a new crystalline organization, as growth and polymerization is initiated from a 1 1 3HDP to pyrrole two-dimensional template. In which the horizontal lattice is comprised of electroactive polypyrrole. Figure 2 illustrates a schematic of the proposed two-dimensional template polymerization. A continuation of this investigation next involved determining the effect of Incorporation of a bulky ferrocene moiety into the monolayer organization. 

Figure 5 shows a schematic of the proposed configuration of the two-dimensional polypyrrole lattice, with mixed alkyl and ferrocene derivitized alkyl units extended into the third dimension. It is not confirmed from our studies whether the ferrocene units are clustered,or are molecularly dispersed in the Py-Fc-3HDP system. The exact orientation of the Py-Fc molecule in the mixed monolayer system, at different phases of monolayer organization,Is currently being investigated. However, it does appear that a unique structural hierarchy Is maintained,when ferrocene moieties are Incorporated into the films. 

In the mid-1960s, Hans Kuhn etal. began their stimulating experiments on monolayer organization [5]. A self-assembled monolayer (SAM) was introduced as a possible alternative to the LB films. The LB and SAM films have attracted much attention recently, because optoelectronics and molecular electronics have become areas at the frontier of materials science [6]. For more details of the historical aspects, the reader is referred to a relevant textbook [7] as well as to the Gaines book mentioned eartier. 

As good examples of their research, the investigations of the energy transfer from a sensitizing molecule to an acceptor molecule within the complex monolayer organization will be given here. A system... 

Lee, L., P. A. Brooksby, Y. R. Leroux, P. Hapiot, and A. J. Downard. Mixed monolayer organic films via sequential electrografting from aryldiazonium ion and arylhydrazine... 

Sullivan TP, Huck WTS (2003) Reactions on monolayers organic synthesis in two dimensions. Eur J Org Chem 2003 17-29... 

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