6. The quantum yield of a photochemical reaction A to produce B was found to be0.5. The reaction was made after irradiation of A with light of 365 nm to produce5 mmol of B. Calculate the total energy absorbed in the reaction.7. The electronic transition due →* of isolated double bond is appears atshorter wavelength compared with the conjugated one, explain.8. Photosensitization is an energy transfer between two molecules, explain thedifference between excitation with or without photosensitizer and give an example9. Dye-sensitized solar cells, as well as photodynamic therapy, is an application ofphotosensitization explain and write the mechanism for both cases.10. Excimer and exciplex are essential in sensing applications; write two exampleswith detail of their importance.11. Photoinduced electron transfer causes fluorescence quenching in a certainchromophore, the fact that inspired researcher for designing chromophore to be usedas a fluorescent sensor, explain and give an example of a fluorescent sensor.

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6. The quantum yield of a photochemical reaction A to produce B was found to be 0.5. The reaction was made after irradiation of A with light of 365 nm to produce 5 mmol of B. Calculate the total energy absorbed in the reaction. 7. The electronic transition due →n* of isolated double bond is appears at shorter wavelength compared with the conjugated one, explain. 8. Photosensitization is an energy transfer between two molecules, explain the difference between excitation with or without photosensitizer and give an example

6. The quantum yield of a photochemical reaction A to produce B was found to be 0.5. The reaction was made after irradiation of A with light of 365 nm to produce 5 mmol of B. Calculate the total energy absorbed in the reaction. 7. The electronic transition due →n* of isolated double bond is appears at shorter wavelength compared with the conjugated one, explain. 8. Photosensitization is an energy transfer between two molecules, explain the difference between excitation with or without photosensitizer and give an example

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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n 1982, F. A. Cotton and D. J. Darensbourg published a paper in Inorganic Chemistry (v21, pp. 2661-2666) describing the kinetics of isomerization of cis/trans-Mo(CO)4(PR): complexes. One of the pure isomers (A) gave rise to 4 CO stretching bands. Upon heating, the other isomer (B) began to form and a single new CO stretching band appeared. A: 4 CO stretching bands (2019, 1922, 1905, and 1899 cm) B: I CO stretching band (1895 cm) y R₂P PR3 OC-Mo R active modes for cis: CO OC CO cis C₂v ос R₂P Mo OC PR₂ trans Dah For both isomers shown above (cis C and trans Das), determine how the CO bond vectors transform under the symmetry operations of their respective point groups to generate the reducible representations for CO bond stretching. (Please use the coordinate system given to the left.) trans: CO CO Reduce the l'co representations into their component irreducible representations to determine the number and symmetry of the CO stretching modes for the cis and trans isomers. "sing the…
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