The ever-increasing global demands for energy supply and storage have led to numerous research efforts into finding and developing renewable energy technologies. Molecular solar thermal energy storage (MOST) systems utilise molecular photoswitches that can be isomerized to a metastable high-energy state upon Journal of Materials Chemistry A Recent
Two crucial challenges for a useful MOST system are the achievement of a sufficiently high energy storage density, ideally higher than 300 kJ kg −1 and light-harvesting in the visible region 15.Functionalization of the norbornadiene with donor and acceptor units has been used to tune absorption maxima, but this positive effect on solar absorption is counter
Introduction. Molecular solar thermal (MOST) systems, also known as solar thermal fuels (STFs), comprised of a photoswitchable molecule with a higher energy metastable photoisomer, represent a promising avenue for harvesting and storing solar energy in a renewable fashion, whilst offering a means of emission-free energy storage from a closed system. 1,2
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
This work demonstrates that, by modifying the rotational energy landscape of the molecules, it is possible to obtain new solar energy storage systems that exhibit exceptionally long half‐lives
Solar energy storage properties MOST systems can function in both liquid and film forms, which can be tailored toward different applications. 21,[38] [39] [40][41][42][43][44][45] In liquid form
Norbornadiene-based photoswitches have emerged as promising candidates for harnessing and storing solar energy, holding great promise as a viable solution to meet the growing energy demands. Triplet-Sensitized Switching of High-Energy-Density Norbornadienes for Molecular Solar Thermal Energy Storage with Visible Light Angew Chem Int Ed Engl
Here, norbornadiene (NBD)-quadricyclane (QC) molecular photoswitches are embedded into polymer matrices, with possible applications in energy storing coatings. The NBD-QC photoswitches that are capable of absorbing sunlight with estimated solar energy storage efficiencies of up to 3.8% combined with attractive energy storage densities of up
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 devices in the future, making strides in the field of renewable energy storage. 2. Results and Discussion 2.1. Synthesis
directly convert solar energy into chemical energy through a photoisomerization reaction.8–13 Among the most promising MOST materials are derivatives of norbornadiene–quad-ricyclane (NBD–QC), known for their high energy storage density and long-term energy storage capabilities.14–18 The stored energy can be released on demand, occurring
Molecular solar thermal energy storage systems are based on molecular switches that reversibly convert solar energy into chemical energy. Here we report on the synthesis, characterization and
ancing energy storage time with solar spectrum match.[11g,h] Here, we present the synthesis of a new series of NBD-based molecules with a good solar spectrum match (estimated up to 3.8% solar energy storage efficiency), using the strong acceptor moiety trifluoroacetyl unit in conjunction with carefully selected
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
Molecular solar-thermal energy storage systems are based on molecular switches that reversibly convert solar energy into chemical energy. Herein, we report the synthesis, characterization, and computational evaluation of a series of low molecular weight (193-260 g/mol) norbornadiene-quadricyclane systems. The molecules feature cyano acceptor
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 absorption of photons in photoresponsive molecules, followed by on-demand release of thermal energy. These materials are called solar thermal
Devices that can capture and convert sunlight into stored chemical energy are attractive candidates for future energy technologies. A general challenge is to combine efficient solar energy capture with high energy densities and energy storage time into a processable composite for device application. Here, norbornadiene (NBD)–quadricyclane (QC) molecular photoswitches
Molecular photoswitches capable of storing solar energy are interesting candidates for future renewable energy applications. Here, using quantum mechanical calculations, we carry out a systematic screening of
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 absorption of photons in photoresponsive molecules, followed by on‐demand release of thermal energy. These materials are called solar thermal
Molecular photoswitches of norbornadiene (NBD) derivatives have been effectively applied in molecular solar-thermal energy storage (MOST) by photoisomerization of NBD to a quadricyclane (QC) state.
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 the molecular weight and the energy storage density. 15, 16 In agreement with this relationship, the comparison of 2-aryl-norbornadiens with 2,3-disubstituted norbornadienes
The ever-increasing global demands for energy supply and storage have led to numerous research efforts into finding and developing renewable energy technologies. Molecular solar thermal energy
Moreover, we have demonstrated their function in laboratory-scale test devices for solar energy harnessing, storage, and release.This Account describes the most impactful recent findings on how to
Since the pioneering work of Hoogeveen et al. in 1973, the catalytic conversion of quadricyclane to norbornadiene for energy release has been firmly established. 26, 27 The design of norbornadiene photoswitches
1. Introduction. One of the main challenges in the world today is a sustainable energy production. In 2017, 85% of world energy production was fossil fuel derived, 1 and environmental impacts necessitates the global community to seek cleaner alternatives. 2 Renewable green energies derived from solar power, wind, or hydroelectric sources are the
the metastable state acts as storage unit. On demand, the stored energy can be released by triggering the back reaction, which occurs in a thermal, catalytic, or electrochemical manner. Thereby, the temporal and spatial solar power production and storage is decoupled from its energy consumption. Several criteria of the respective energy storage
A major challenge in the field of molecular solar thermal energy storage is designing visible light-absorbing photoswitches with long energy storage half-lives. Five novel visible light-absorbing norbornadiene dimers
Molecular solar-thermal energy storage systems are based on molecular switches that reversibly convert solar energy into chemical energy. Herein, we report the synthesis, characterization, and computational evaluation of a series of low molecular weight (193–260 g mol −1) norbornadiene–quadricyclane systems.The molecules feature cyano acceptor and ethynyl
In this review, we illustrated the evolution from the first discovery of the photoswitchable nature of norbornadiene as route for energy storage to the sophisticated molecular design of numerous derivatives with
Liquid Norbornadiene Photoswitches for Solar Energy Storage. Adv. Energy Mater. Pub Date : 2018-03-25 DOI : 10.1002/aenm.201703401. Closed cycle systems for storage of solar energy have been suggested, based on absorption of photons in photoresponsive molecules, followed by on‐demand release of thermal energy.
Two-way photoswitching norbornadiene derivatives for solar energy storage†. Liang Fei a, Helen Hölzel b, Zhihang Wang c, Andreas Erbs Hillers-Bendtsen d, Adil S. Aslam e, Monika Shamsabadi e, Jialing Tan a, Kurt V. Mikkelsen d, Chaoxia Wang * a and Kasper Moth-Poulsen * befg a College of Textile Science and Engineering, Jiangnan University, 1800 Lihu Road,
Molecular solar thermal energy storage (MOST) systems based on photochromic molecules that undergo photoisomerization to high‐energy isomers are attractive for storage of solar energy in a
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 necessary task to develop new, efficient methods for solar energy storage to provide a reliable and sufficient energy supply based on sustainable resources. One
Molecular photoswitches of norbornadiene (NBD) derivatives have been effectively applied in molecular solar-thermal energy storage (MOST) by photoisomerization of NBD to a quadricyclane (QC) state. However, a challenge of the NBD-based MOST system is the lack of a reversible two-way photoswitching p
A general challenge is to combine efficient solar energy capture with high energy densities and energy storage time into a processable composite for device application. Here, norbornadiene (NBD)–quadricyclane (QC) molecular
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