Self-assembly and nanostructure formation of amphiphilic 4,5-bis(2-pyridylethynyl)tetrathiafulvalenes

摘要

Amphiphilic tetrathiafulvalene (TTF) having both long alkylthio chains and pyridylethynyl groups was synthesised, and its nanostructure and redox properties were investigated. The bis(pyridylethynyl)TTF formed 1D flat and helical tapes. Since these tapes were of micrometre size, the conductivities of neutral and I2-doped tapes could be measured by directly attaching gold wires to the tape. After doping with I2, the colour of the tape changed from purple to black, and the tape behaved as a semiconductor up to 2.6 × 10~(-4) S cm~(-1).