Graphene quantum dots (GQDs) are synthesized by a simple, cost‐effective method from the easily available bioresource of honey (honey made by bees using nectar from flowers) via emulsion‐templated carbonization of carbohydrates, demonstrating for the first time the facile synthesis of nearly monodisperse GQDs from a bioresource. These GQDs can be applied as transparent security ink and a component for white‐light emission.

Tuning the microstructure, conductance, band gap of a single molecule with an external stimuli such as light have vital importance in nanoscale molecular electronics. Azobenzene systems are inimitable light responsive molecules suitable for the development of optically modulated materials. In this work we have demonstrated the development of an optically active Multiwalled Carbon Nanotube (MWCNT)-hybrid material by the noncovalent functionalization of azo based chromophore derived from cardanol, a bioresource material. This photoresponsive noncovalent hybrid shows trans-cis photoisomerization induced switching of conductance. We report this as the first example in which the photochromic assembly developed from a bioresource material exhibited tunable conductivity. We expect that this novel photoswitchable hybrid with reversible conductance may have potential applications in nanoscale molecular electronics, solar cells, OLEDs, etc.

A In view of security information storage, preserving the information at the molecular level is an attractive research goal. This eventually led to the extensive development of “Molecular Keypad Locks” which can be opened only by a particular sequence of chemical inputs. Here we report a molecular keypad lock from two bioresource derived components, one is an azobenzene system from cardanol and a graphene quantum dot derived from honey. This system further used to construct an IMPLICATION logic gate and a fluorescent probe for the detection of a poisonous pesticide Carbofuran. This is the first example of molecular keypad lock constructed from sustainable components and thus opens a new pathway in the field of “Sustainable Molecular Electronics”.

A simple and cost‐effective synthesis of green luminescent graphene quantum dots (GQDs) from an easily available bioresource, honey (made by bees using nectar from flowers), is illustrated. S. Mahesh and co‐workers from the Indian Institute of Space Science and Technology (IIST), Trivandrum, propose on page 70 that these GQDs with excellent luminescence properties can be utilized as a fluorescent security ink and also as a component for white‐light emission.

Emerging Graphene Quantum Dots (GQDs)—a new member of the carbon family—have attracted a tremendous research interest in the scientific community due to their small size and tunable photoluminescence properties.