Course

Unit-1 Light induced processes in everyday lifeThe Nature of Light, Photosynthesis, Vision, Photoresponse Mechanisms in Plants and Animals, Photomedicine, Photochemical effects of Visible and UV light, Bioluminescence, Photodegradation, Imaging processesUnit 2 – Photochemistry – Principles and ReactionsRates of absorption,-EinsteinBeerLaw, FluorescenceLambertslifetimes, quantumLaw, Star yield; Fluorescence, Phosphorescence, Jablonski diagram, cis-trans isomerisation, Paterno-Buchi reaction, Norrish Type I and II reactions, photo reduction of ketones, di-pimethane rearrangement, photochemistry of arenes, Hoffmann-Loffler-Freytag reaction, Barton reaction, Photochemistry of cyclohexadienones.Unit 3- Excited state processesAdiabatic and Non-adiabatic processes, Monophotonic and multiohotonicproceses, Primary and secondary photochemical processes,kinetics of photochemical reactions, photo-ionization , light induced electron capture and electron transfer reactions, Intramolecular and intermolecular electron transfer, Marcus-Hush Model of Electron transfer, Electronically excited moleculesExcimers and Exciplexes, Charge transfer in excited states, twisted intramolecular charge transfer state, quenching of excited states, Stern Volmer equation, electron transfer, energy transfer,paramagnetic quenching, concentration quenching, static and dynamic quenchingUnit 4-Mechanisms of Photochemical reactionsOrganic Photochemistry -Quenching, Sensitization, Unimolecular and bimolecular reactions, Photoelectrochemistry-reactions at electronically excited semiconductor electrodes, Inorganic photochemistry, photochemistry and photophysics of metal complexes, Photochemistry in solids and organized assemblies, Photochemical reactions in glasses, excitons in polymers and crystals, photochemistry in micelles, photochemical reactions of free radicalsUnit 5- Light in IndustryPhotographic processes-Spectral sensitization, Colour photography, Instant photography,Electrophotography, Photopolymerisation and photochemical degradation of polymers, Phototchemistry in synthesis photochlorination of polymers, Synthesis of caprolactam, Vitamin D, Photochemistry of Dyes and Pigments, Phtochromism, Energy conversion and storage photoelectrochemicalcells,Ozone layer-its photochemical formation and degradation.

TEXT BOOKS / REFERENCES:1. Modern molecular photochemistry- N. J. Turro (University Sci. 1991)2. Chemistry and Light- P. Suppan (RSC 1999)3. Organic and Inorganic Photochemistry; Volume 2 of Molecular and supramolecular photochemistry – V. Ramamurthy, Kirk S. Schanze ( M.Dekker, 1998)4. Organic Photochemistry- James MorrissCoxon, Brian Halton, (CambridgeUniversity Press, 1987)5. Principles of Organic Synthesis- R.O.C. Norman &Coxon (CRC Press; 1993)6. Fundamentals of Photoinduced Electron Transfer- G. J. Kavarnos (Wiley-VCH, 1993)7. Essentials of Molecular Photochemistry – A Gilbert and J Baggott(Blackwell,1991)8. Principles and applications of photochemistry- R. P. Wayne (OUP 1988)9. Photochemistry – C. E. Wayne and R. P. Wayne (OUP Primer)