Monoaryl‐Substituted Norbornadiene Photoswitches as Molecular Solar
The energy storage densities are, as expected, lower than those of the parent norbornadiene (1 a). 12 This observation can be explained by the inverse correlation between
Engineering of Norbornadiene/Quadricyclane
Molecular photoswitches can be used for solar thermal energy storage by photoisomerization into high-energy, meta-stable isomers; we present a molecular design strategy leading to photoswitches with high energy
Engineering of Norbornadiene/Quadricyclane Photoswitches for Molecular
The polycyclic strained molecule norbornadiene (NBD), which photoconverts to quadricyclane (QC), is of great interest because it has a high energy storage density and the
Monoaryl‐Substituted Norbornadiene Photoswitches as Molecular Solar
efficiency of other energy sources, mainly because of problems of the energy storage and the irregular availability of sunlight.[4–6] Therefore, it is still a highly important and
A Norbornadiene-Based Molecular System for the
In this context, the capture and storage of solar energy at the molecular level is a hot topic and molecules capable of absorbing light giving rise to stable photoisomers capable of releasing the stored energy on demand in
Push-Pull Bis-Norbornadienes for Solar Thermal Energy Storage
phenyl linker in norbornadiene dimers can greatly enhance the solar thermal energy storage properties of the photoswitch. This design feature can then be used in high-performing MOST
Low Molecular Weight Norbornadiene Derivatives for
Molecular solar-thermal energy storage: A synthetic route to norbornadienes with a cyano acceptor and ethynyl-substituted aromatic donor groups has been developed. The products have been used in low molecular
Bis‐ and Tris‐norbornadienes with High Energy
Molecular solar thermal energy storage (MOST) systems can convert, store and release solar energy in chemical bonds, i.e., as chemical energy. In this work, phenyl- and naphthyl-linked bis- and tris-norbornadienes
Norbornadiene-based photoswitches with exceptional combination of solar
Norbornadiene-quadricyclane (NBD-QC) photo-switches are candidates for applications in solar thermal energy storage. Functionally they rely on an intramolecular [2+2]
Unraveling factors leading to efficient
Developing norbornadiene–quadricyclane (NBD–QC) systems for molecular solar-thermal (MOST) energy storage is often a process of trial and error. By studying a series of norbornadienes (NBD-R2) doubly substituted at
Liquid Norbornadiene Photoswitches for Solar
Due to high global energy demands, there is a great need for development of technologies for exploiting and storing solar energy. Closed cycle systems for storage of solar energy have been suggested, based on
Engineering of Norbornadiene/Quadricyclane Photoswitches for Molecular
Moreover, we have demonstrated their function in laboratory-scale test devices for solar energy harnessing, storage, and release.This Account describes the most impactful
The Norbornadiene/Quadricyclane Pair as Molecular
Molecular Solar Thermal (MOST) systems are interesting candidates for energy storage in one-photon one-molecule processes. The photoinduced conversion of norbornadiene into its strained valence isome...
6 FAQs about [Kenya norbornadiene solar energy storage]
Is norbornadiene a molecular energy storage system?
Due to its properties, the molecule pair norbornadiene (NBD) and quadricyclane (QC) appears auspicious concerning its feasibility as MOST energy storage system (see Section 1.2). MOST systems can also be considered as molecular photoswitches; 9 in this context, various systems are known in literature (see Scheme 1).
Can a cyano acceptor be used for solar energy storage?
Molecular solar-thermal energy storage: A synthetic route to norbornadienes with a cyano acceptor and ethynyl-substituted aromatic donor groups has been developed. The products have been used in low molecular weight norbornadiene–quadricyclane molecular switches with promising molecular solar energy storage properties (see graphic).
Are molecular solar thermal systems suitable for energy storage?
Molecular Solar Thermal (MOST) systems are interesting candidates for energy storage in one-photon one-molecule processes. The photoinduced conversion of norbornadiene into its strained valence isomer quadricyclane is particularly promising. Challenges concerning the overall efficiency lead to the search for suitable molecule and catalyst design.
What are the limitations of unsubstituted norbornadiene?
Unsubstituted norbornadiene has some limitations in this regard, such as poor solar spectrum match and low quantum yield. In the past decade, our group has developed and tested new NBD systems with improved characteristics.
Which Norbornadiene is best suited for solar spectrum match?
The most red-shifted absorption was observed for 4 d, with a maximum at 398 nm and an onset at 456 nm. Thus, among the synthesized compounds, 4 d is the norbornadiene that best meets the requirements of solar spectrum match.
What is the absorption onset of unsubstituted norbornadiene 1?
The absorption onset of unsubstituted norbornadiene 1 is 267 nm, but since the intensity of solar radiation below around 300 nm is very low at sea level, norbornadiene is essentially inert to sunlight. To prepare quadricyclane, high-power ultraviolet lamps are employed, typically in the presence of a photosensitizer.