OBJECTIVES 2013:

A. Synthesis and electro-optical properties of polyfluorene modified with randomly distributed electron-donor and rotaxane electron-acceptor structural units in the main chain:

SCHEME 1 Synthesis of PF and PF•γCD random fluorene copolymers (conditions: 1/2/3 = 0.5/0.4/0.1 molar ratio; solvent DMF/toluene 1/1 v/v; Pd(PPh3)4 catalyst; Na2CO3 3M solution, 100 oC, 72h): comonomer structures (a); copolymer structures (b).

B. Synthesis of poly[2,7-(9,9-dioctylfluorene)-alt-(5,5'-bithiophene/permethylated β-cyclodextrin) main-chain polyrotaxane

SCHEME 2. Synthesis of poly[2,7-(9,9-dioctylfluorene)-alt-(5,5'-bithiophene/permethylated β-cyclodextrin) main-chain polyrotaxane and its non-rotaxane counterpart

C. Synthesis of poly[2,7-(9,9-dioctylfluorene)-alt-(5,5'-bithiophene/ persilylated β-cyclodextrin ) main-chain polyrotaxanes and non-rotaxane counterpart, and the effect of permodified β-CD derivatives on the photophysical properties

SCHEME 3. Chemical structures of the non-rotaxane PFBTh, PFBTh•PSβCD and PFBTh•PMeβCD polyrotaxane copolymers.