Conjugated organic molecules

Hill IG, Kahn A, Soos ZG, Pascal RA Jr (2000) Charge-separation energy in films of 7i-conjugated organic molecules. Chem Phys Lett 327 181-188... 

In reality, most studied derivatives linked to the above target(s) are organic polymers or conjugated organic molecules,lb,d 2-4,7 but a recent topic in the field is that concerned with metal wires, or onedimensional arrays of inorganic molecules.8 These latter have, however, to be roughly subdivided in three classes ... 

Figure 12. The 7t-orbital axis vector analysis (POAV) for nonplanar conjugated organic molecules.

Marder, S. R., Beratan, D. N., and Cheng, L. T. 1991. Approaches for optimizing the first electronic hyperpolarizability of conjugated organic-molecules. Science 252 103-6. 

Platt has discussed the application of selection rules to the spectra of conjugated organic molecules, in particular condensed ring systems (8). He cites the various kinds of forbiddenness and then compares these with the corresponding selection rules for atomic systems. His treatment is useful and the following statements are taken directly from his article ... 

Haddon, R. C. 1990 Measure of nonplanarity in conjugated organic molecules Which structurally characterized molecule displays the highest degree of pyramidalization J. Am. chem. Soc. 112, 3385-3389. 

Dewar and Rzepa found that the MNDO (Section 6.2.5.3) electron affinities of 26 molecules with delocalized HOMOs (mostly radicals and conjugated organic molecules) had an absolute mean error of 0.43 eV for ten molecules with the... 

The activity of simple, inorganic and non-conjugated organic molecules are not of interest in vision research. These areas have been shaded in the figure. 

The de-excitation path available to conjugated organic molecules is controlled by quantum-mechanical rules which are complex. Some molecules will relax spontaneously, other will not (within a reasonable time) without assistance from another material/mechanism. The presence of Oxygen is a special case. Resonant conjugated molecules with two Oxygen atoms will not fluoresce and there only means of de-excitation is by means of a direct transition that is not allowed because of the presence of the triplet state. The nonresonant conjugates normally de-excite thermally via a two-step process. 

C to H The conjugated organic molecules containing terminal atoms other than Oxygen, or only one... 

Schwartz MP, Ellison MD, Coulter SK, Hovis JS, Hamers RJ (2000) Interaction of tr-conjugated Organic Molecules with ir-bonded Semiconductor Surfaces Structure, Selectivity, and Mechanistic Implication, J Am Chem Soc 122 8529-8538... 

In this chapter we shall discuss some significant results obtained in the theory of conjugated organic molecules by the graph-theoretical methods. 

Using the INDO Cl procedure, the excitation energies of the Sj, Tj, and quintet (Q,) states for 46 conjugated organic molecules have been calcu-lated. " It is concluded that quintet states are accessible in many cases through triplet-triplet annihilation. Delayed-fluorescence o.d.m.r. and e.p.r. studies of... 

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