Mode selective chemistry

Weinacht T C, White J L and Bucksbaum P H 1999 Toward strong field mode-selective chemistry J. Phys. Chem. A 103 10 166-8... 

Modem photochemistry (IR, UV or VIS) is induced by coherent or incoherent radiative excitation processes [4, 5, 6 and 7]. The first step within a photochemical process is of course a preparation step within our conceptual framework, in which time-dependent states are generated that possibly show IVR. In an ideal scenario, energy from a laser would be deposited in a spatially localized, large amplitude vibrational motion of the reacting molecular system, which would then possibly lead to the cleavage of selected chemical bonds. This is basically the central idea behind the concepts for a mode selective chemistry , introduced in the late 1970s [127], and has continuously received much attention [10, 117. 122. 128. 129. 130. 131. 132. 133. 134... 

Quack M 1991 Mode selective vibrational redistribution and unimolecular reactions during and after IR-laser excitation Mode Selective Chemistry ed J Jortner, R D Levine and B Pullman (Dordrecht Kluwer) pp 47-65... 

Jortner, J., Levine, R. D., and Pullman, B. (eds.) (1991), Mode Selective Chemistry, Kluwer, Dordrecht. 

M. Quack, Jerusalem Symp. 24, 47 (1991) in Mode Selective Chemistry, J. Jortner,... 

Figure 8. (a) Pulse sequence resulting from optimization of the control field to generate H in the same reaction as studied in Fig. 6. (6) The Husimi transform of the pulse sequence shown in (a). (c) Time dependence of the norms of the ground-state and excited-state populations as a result of application of the pulse sequence shown in (a). Absolute value of the ground-state wave function at 1500 au (37.5 fs) propagated under the pulse sequence shown in (a), shown superposed on a contour diagram of the ground-state potential energy surface. (From D. J. Tannor and Y. Jin, in Mode Selective Chemistry, B. Pullman, J. Jortner, and R. D. Levine, Eds. Kluwer, Dordrecht, 1991.)...

K. Nelson, in Mode Selective Chemistry, Vol. 24, Jerusalem Symposium on Quantum Chemistry and Biochemistry, by J. Jortner, Ed., Kluwer Academic, Hingham, MA, 1991, p. 527. 

S. H. Lin, R. G. Alden, C. K. Tang, Y. Fujimura, M. Sugawara, Femto-Second Processes and Ultrafast Biological Electron Transfer, in J. Jortner, R. D. Levine, A. Pullman (Eds.), Mode Selective Chemistry, Proceedings of the Twenty-Fourth Jerusalem Symposium on Quantum Chemistry and Biochemistry held in Jerusalem, Israel, May, Kluwer Academic Publishers, Dordrecht, 1990. 

Mode-selective chemistry The use of laser beams to control the outcome of a chemical reaction by exciting specific energy states of the reactants. 

The central concept of mode-selective chemistry is illustrated in Fig. 1, which depicts the ground and excited state potential energy surfaces of a hypothetical triatomic molecule, ABC. One might wish, for example, to break selectively the bond between atoms A and B to yield products A+BC. Alternatively, one might wish to activate that bond so that in a subsequent collision with atom D the products AD+BC are formed. To achieve either goal it is necessary to cause bond AB to vibrate, thereby inducing motion along the desired reaction coordinate. 

J. C. Whitehead, Ed., Selectivity in Chemical Reactions (Kluwer Acaidemic Publishers, Dordrecht, 1991) M. N. R. Ashfold and J. E. Baggott, Eds., Advances in Gas-Phase Photochemistry and Kinetics, Bimolecular Collisions (Royal Society of Chemistry, London, 1989) J. Jortner, R. D. Levine and B. Pulman, Eds., Mode Selective Chemistry (Kluwer Acaidemic Publishers, Dordrecht, 1991). 

E.E.Nikitin, On the Landau method of calculating quasiclassical matrix elements, in Mode Selective Chemistry, Proceedings of the 24 Jerusalem Symposium on Quantum Chemistiy and Biochemistry, Eds. J.Jortner et al, Dordrecht, Kluwer Academic Publishers, 1991, p. 401... 

Effect of reagent vibration on the hydrogen atom + water-d reaction an example of bond-specific chemistry J. Phys. Chem. 97, 2194-2203 (c) Bronikowski M. J., Simpson W. R. and Zare R. N. (1993) Gomparison of reagent stretch vs. bend excitation in the hydrogen atom + water-d2 reaction an example of mode-selective chemistry J. Phys. Chem. 97, 2204-2208 (d ) Adelman D. E., Filseth S. V. and Zare R. N. (1993) Integral rate constant measurements of the reaction H +D2O + HD(v ,j )+OD, J. Chem. Phys. 98, 4636-4643. 

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