**Preface to "Molecular Electronics"**

The purpose of this Special Issue is to offer a general overview of the current state of affairs in the field of molecular electronics without the intention of covering every single aspect. We envisage that this Special Issue will be useful for specialists in the field, both theoreticians and experimentalists. Furthermore, given the strong interdisciplinarity of this topic, which lies at the interface between physics, chemistry, biology and engineering, it will be appealing to the non-specialist who is looking to gain a feeling about what is going on at the moment in the field. In times such as these, in which the number of scientific journals and research studies is soaring, Special Issues are a good opportunity for researchers working in the same field to "meet" virtually on a common platform. This has become even more important in the last year due to travel restrictions following the COVID-19 pandemic, which have prevented researchers from meeting in person at international conferences. I am, therefore, very grateful to the authors for their enthusiasm and willingness to take part in the project. Finally, I would like to thank the editorial team of *Applied Sciences* for their invaluable assistance, which has made this a very enjoyable experience.

> **Linda Angela Zotti** *Editor*
