Image (IMAGE) World Scientific Caption A schematic diagram of formation and measurement of molecular junctions of oligofluorenes. Oligofluorene molecular wires can be synthesized with high efficiency and high purity, and can be easily incorporated into single molecule circuits under the conditions of solution phase, ambient temperature and pressure. The molecular conductance of newly synthesized oligofluorene molecules was measured by scanning tunneling microscopy based break-junction method. These molecules can be easily integrated into single molecule circuits. Compared with prototype lines with extended π-electronic states, such as oligophenyleneethynylene and oligophenylenevinylene, oligomeric fluorene molecular lines show higher conductivity, and there is a correlation between conductivity trend and the energy gap between the highest occupied molecular orbital and lowest unoccupied molecular orbital. Credit Bingrun Chen Usage Restrictions Please contact with Bingrun Chen, 120333206@qq.com for usage restrictions on the picture. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.