Photochemically controlled molecular devices and machines

1 Introduction 2 Molecular-level Devices for Processing Light Signals Wires Switching Devices Plug/socket Systems Molecular Extension Cables Antenna Systems for Light Harvesting Molecular Lenses Capable of Tuning the Colour of Light Fluorescent Sensors with Signal Amplification Dendrimers for a Multiple Use of Light Signals Logic Gates AND Logic Gate XOR and XNOR Logic Gates 3 Light Driven Molecular Machines Dethreading/rethreading of Pseudorotaxanes A Sunlight Powered Nanomotor 4 Conclusion