Fullerene C <sub> 60 </ Sub> Piperidine Xanthate Thick To Fit / (2 - Thienyl) - Four Ttf Laser Photolysis Of A Preliminary Study

Excellent electron acceptor properties envoked an interdisciplinaty interset to study the participant and key processes and application of [60]fullerene and its derivativates in the fields of chemistry, physics, biology, material science such as photoelectronical effect, photomagnatic effett, photoenergical effect, nonlinear optical effect. Tetrathia-fulvalene and its derivativates inhabit excellent donor properties in the field of organic superconductivity. Polythiophenes substituted by tetrathiafulvalene derivativates and polytetrathiafulvalenes substituted by thiophenes may be prepared from tetrathiafulvalene derivativates substitued by thiophenes, this kind of polymeres may have good photoelectronical properties as linked to [60]fullerene or its derivativates. In present work we firstly studyed the photoelectronical properties of [60]fullerene containing piperidinoxanthate dyad(C60-PX) and tetrakis(2-thienyl)tetrathiafulvalene (TT-TTF) by nanosecond laser light flash photoylsis.1. There is no electron transfer from tetrakis(2-thienyl)tetrathiafulvalene to [60]fullerene containing piperidinoxanthate dyad in benzonitrile in steady-state.From the steady-state absorption spectras of [60]fullerene containing piperidinoxanthate dyad, tetrakis(2-thienyl)tetrathiafulvalene and their mixtures, it can been seen that the steady- state absorption spectra of the mixture are essentially a linear combination of the absorption spectras of [60]fullerene containing piperidinoxanthate dyad and tetrakis(2-thienyl)tetrathiafulvalene, this suggests that which have not been observed that photoinduced electron transfer from tetrakis(2-thienyl)tetrathiafulvalene to [60]fullerene containing piperidinoxanthate dyad in benzonitrile in steady-state.2. Excited triplet state of [60]fullerene containing piperidinoxanthate dyad is at 690nm, there is blue shift corresponding to the excited triplet state of present C60 at 750nm.Excited triplet state of [60]fullerene containing piperidinoxanthate dyad is at 690nm, which has lifetime of 23.7[xs in Ar-saturated benzonitrile, whereas that ofparent C60 is at 750nm, with lifetime of 50s, indicating that excited triplet state of [60]fullerene piperidinoxanthate dyad is blue shift compared with that of parent C60, which can be attributed to the addition of piperidinoxanthate to C60 cage reducing the steadiness of the C60 cage. The lifetime of excited triplet of [60]fullerene containing piperidinoxanthate dyad is 0.51s in air-saturated benzonitrile, and the decay is rapidly accelerated by tetrakis(2-thienyl)tetrathiafulvalene and/or oxygen, the nonlinear relativity between the decay rates of excited triplet state of [60]fullerene containing piperidinoxanthate dyad and the concentrations of tetrakis(2-thienyl)-tetrathiafulvalene indicates the complexity of the photoinduced electron transfer.3. Another decay of excited state has been observed at 690nm after excitation at 532 nmAnother decay of excited state at 690nm relating to tetrakis(2-thienyl)tetra-thiafulvalene has been observed at 690nm after excitation at 532nm, whose lifetime increasing as enlarging the concentrations of tetrakis(2-thienyl)tetrathiafulvalene. It may be the absorption of tetrakis(2-thienyl)tetrathiafulvalene radical cation or two tetrakis(2-thienyl)tetrathiafulvalene radical cation entity .In addition, the preparing of [60]fullerene containing 4,5-bi(2-thienyl)tetra-thiafulvalene dyad [60]fullerene containing 2,3-bis(2-pyrindyl)quinoxaline tyad and other target compounds are failure.