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Full Screen- TITLE
- DEDICATION
- CERTIFICATE
- DECLARATION
- ACKNOWLEDGEMENT
- GLOSSARY OF TERMS
- CONTENTS
- 1 INTRODUCTION
- 2 PHOTOSENSITIVE AZO POLYMERS: CHARACTERISTICS, CONCEPTS AND CONFIGURATIONAL MECHANICS - A REVIEW
- 2.1 Characteristics and concepts of photoresponsive azo polymers Configurational Mechanics of chain molecules
- Spectral behaviour
- Viscosity
- Applications
- 2.2 Configurational mechanics of chain molecules
- 2.2.1 Spatial configuration of chain molecules
- 2.2.2 End-to-end distribution and their moments
- 2.2.3 Freely jointed or Random flight chain
- 2.2.4 The freely rotating chain
- 2.2.5 Restricted rotation with independent bond rotational potentials
- 2.2.6 The bond rotational potentials for simple molecules
- 2.2.7 The rotational isomeric state approximation
- 2.2.8 Restricted rotation with interdependent bond rotational potentials
- 2.2.9 The configuration partition function: General formulations using matrix method
- 2.2.10 Configuration dependent properties of chain molecules
- 2.2.11 Mean square moments
- 2.2.12 Random copolymers
- 2.2.13 Long-range interactions
- 3 SYNTHESIS, CHARACTERIZATION AND PHOTORESPONSIVE PROPERTY OF AZO POLYMERS
- 3.1 Synthesis of polyesters with azobenzene residues in the backbone
- 3.2 Photostimulated property changes of azo polymers
- 3.2.1 Photoinduced viscosity changes of polyesters (PE) containing azo group in the backbone
- Fig. 3.4 Photo-induced viscosity changes in PE, (27) before and after irradiation
- Fig. 3.5 Photo-induced viscosity changes in PEvi (28) before and after irradiation
- 3.2.2 Photoinduced spectral change of polyesters
- 3.3 Experimental - General
- 3.4 Preparation of azobenzene 4, 4-dicarboxylic acid
- 3.5 Preparation of azobenzene 4, 4-dicarbonyl chloride
- 3.6 Synthesis of polyester PEi (23)
- 3.7 Synthesis of polyester PEiii (25) Photoinduced dimensional change of polyester PEiv (26)
- 3.8 Photoinduced dimensional change of polyester PEiv (26 1
- 3.8.1 Preparation of 1, 4-phenylene carboxy ethylene glycol 2, 5-dicarboxylic acid (20)
- 3.8.2 Synthesis of PEiv {26)
- 3.8.3 Photo induced viscosity change of PEiv (26)
- 3.9 Photoinduced dimensional change of polymer PEv (27)
- 3.9.1 Preparation of 1, 4-phenylene carboxy diethylene glycol 2, 5-dicarboxylic acid (21)
- 3.9.2 Synthesis of polyester PEv (27)
- 3.9.3 Photoinduced viscosity change of PEv (27) Photoinduced dimensional change of polymer PEvi (28)
- 3.10 2hotoinduced dimensional change of polymer PEvi (2 8)
- 3.10.1 Preparation of 1, 4-phenylene carboxy bisphenol A 2, 5-dicarboxylic acid (22)
- 3.10.2 Synthesis of polyester PEVi
- 3.10.3 Photoinduced viscosity change of polymer PEW, (28)
- 4 CALCULATION OF MEAN SQUARE END-TO-END DISTANCE USING MATRIX MULTIPLICATION METHOD
- 4.1 Mean square end-to-end distance of polyethylene (PM)
- 4.2 Mean square end-to-end distance of polyester poly (ethylene terephthalate)
- 4.2.1 Geometrical description of the chain unit ofpolyester - Poly (ethy1ene terephthalate)
- 4.2.2 Construction of the generator matrix G1
- 4.2.3 Construction of the generator matrix G2
- 4.2.4 Construction of generator matrix G3
- 4.2.5 Construction of generator matrix G4
- 4.2.6 Construction of generator matrix G5
- 4.2.7 Construction of generator matrix G6
- 4.3 Mean square end-to-end distance of polyester PEI. (26)
- 4.3.1 Geometrical description of the chain unit ofpolyester PEL,
- 4.3.2 Construction of generator matrix G1
- 4.3.3. Construction of generator matrix G2
- 4.3.4 Construction of generator matrix G3
- 4.3.5 Construction of generator matrix G4
- 4.3.6 Construction of generator matrix G5
- 4.3.7 Construction of generator matrix G6
- 4.3.8 Construction of the generator matrix G7
- 4.3.9 Construction of the generator matrix G8
- 4.3.10. Mean square end-to-end distance of copolymer having fraction of trans azo units w1 = 0 (all cis)
- 4.3.11 Mean square end-to-end distance of the polymerhaving wl = -1
- 4.3.12 Ratio of
O/U for PEi, having wl = -2 - 4.3.13 Ratio of
O/Mf or PEi, having wl = -3 - 4.3.14 Ratio of.rr2 > O/M for PEiv having wl = -4
- 4.3.15 Ratio of
- 4.3.15 Ratio of
0/M for PEi, having wl = -5 - 4.3.16. Ratio of
@ for PEi, having wl = -6 - 4.3.17. Ratio of
- 4.3.18 Ratio of
- 4.3.19 Ratio of
0/M for PEiv having wl = -9 - 4.4 Mean square end-to-end distance of polyester PEv (27)
- 4.4.1 Geometrical description of the chain unit of thepolyester P G
- 4.5 Mean square end-to-end distance of polyester PEvi (28)
- 4.5.1 Geometrical description of the chain unit ofthe polyester PEvi
- 4.6 Mean square end-to-end distance of polyester PEi (23)
- 4.6.1 Geometrical description of the chain unit of thepolyester PEi
- 4.7 Mean square end-to-end distance of polyester PEii (24)
- 4.7.1 Geometrical description of the chain unit of thepolyester PEII
- 4.8 Mean square end-to-end distance of polyester PEiii (25)
- 4.8.1 Geometrical description of the chain unit of thepolyester PEiii
- 5 COMPARISON BETWEEN EXPERIMENT AND THEORY
- 5.1 Polyester PEiv
- 5.2 Polyester PEA.
- 5.3 Polyester PEvi
- 6 SUMMARY AND OUTLOOK
- REFERENCES
- APPENDIX I
- APPENDIX II