Functional organic materials

Dyer PW, Reau R (2007) In Muller TJJ, Bunz UHF (eds) Functional organic materials. Wiley-VCH, Weinheim, Chap 4... 

Application of Radiation Chemical Reactions to the Molecular Design of Functional Organic Materials... 

In the following section, we will show how radiation chemical reactions are useful for the molecular design of functional organic materials by taking our recent studies on next-generation resist polymers and organic semiconductors as examples. 

In living cells, various oxidoreductases play an important role in maintaining the metabolism of living systems. Most of oxidoreductases contain low-valent metals as the catalytic center. In vitro enzymatic oxidoreductions have afforded functional organic materials.1 Recently, some oxidoreductases such as peroxidase, laccase, and bilirubin oxidase have received much attention as catalyst for the oxidative polymerizations of phenol and aniline derivatives to produce novel polyaromatics. 

The electronegativity of the SFj group is 3.62 [55], compared to 3.45 for CF3 [56]. A particular attractive property in the design of functional organic materials, for example liquid crystals, is the strong dipole moment which can be achieved by use of the SF5 group. For example, the dipole moment of pentafluorosulfuranyl benzene (PhSFs) is 3.44 D (25 °C) [43c] compared with only 2.6 D for benzotrifluoride (PhCFj) [57]. 

Amorphous molecular materials have found successful application as materials for use in OLEDs, constituting a new class of functional organic materials. A new field of organic materials science that deals with amorphous molecular glasses has been opened up. 

Seki, K. and Ishii, H., Photoemission studies of functional organic materials and their interfaces, J. Electron Spectroscopy Related Phenomena, 88-91, 821, 1998. 

Department of Chemical Engineering and Chemistry, Functional Organic Materials wand Devices, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands... 

The ability of oxophenalenoxyl radicals to form functional organic materials was also examined by tetrathiafulvalene (TTF) molecule as an electron donor. It was fotmd that TTF-substituted oxophenalenoxyl radicals exhibited tunable intramolecular electron transfer (lET) by moderate change of external environments such as solvent and temperature in solution, leading to spin center transfer accompanied by solvato-/thermochromism (Fig. 10). There were two species involved in this process, a neutral radical 35 existing in dichloromethane solution with most of the spin localized on oxophenalenoxyl motif, and a zwitterionic radical 36 existing in trifluor-oethanol solution with spin localized on TTF moiety as radical cation species. 

The area of C—activation has experienced a flurry of activity over the past two decades and transformations such as those summarized and described herein are fast gaining in their popularity as powerful tools with which the organic chemist can design and construct heteroaromatic molecules. In addition, these metal-catalyzed C—H bond functionalization reactions have had a significant impact on the synthesis of natural products, pharmaceuticals, and functional organic materials. 

Figure 43 Schematic illustration (a) gravure and (b) flexographic printing Reprinted from Sndergaard, R.R., Hsel, M., Krebs, F.C., 2013b. RoU-to-roll fabrication of large area functional organic materials. Journal of Polymer Science Part B Polymer Physics 51 (1), 16-34, with permission from John Wiley and Sons.

Supramolecular Organization of Functional Organic Materials in the Bulk and at Organic/Organic Interfaces A Modeling and Computer Simulation Approach... 

Supramolecular Organization of Functional Organic Materials in the Bulk and... 

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