Photon energy storage in organic materials— The case of linked anthracenes

Jones, Guilford; Reinhardt, T. E.; Bergmark, William R.

doi:10.1016/0038-092x(78)90103-2

Cited by 76 publications

(49 citation statements)

References 52 publications

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“…The properties of these compounds meet the necessary requirements of the photochemical systems needed to convert the Sun's energy into low-temperature thermal energy [48,[51][52][53][54], namely (1) The initial substance (XVlIa) possesses intensive absorption band with the wavelength Amax = 425 nm, which ensures fairly effective utilization of the solar radiation. 6.3 and 6.4a provide for a possible transformation and storage of light, including solar energy in the form of strain energy of the metastable isomer XVlIb.…”

Section: Photoacylotropic Compounds As Abiotic Photochemical Solar Enmentioning

confidence: 99%

Dissociative and Photochemical Mechanisms of Intramolecular Tautomerism

Olekhnovich¹,

Zhdanov²

1988

Molecular Design of Tautomeric Compounds

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Section: Photoacylotropic Compounds As Abiotic Photochemical Solar Enmentioning

confidence: 99%

Dissociative and Photochemical Mechanisms of Intramolecular Tautomerism

Olekhnovich¹,

Zhdanov²

1988

Molecular Design of Tautomeric Compounds

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“…Some chemical systems have involved solid/gas components as well (Prengle et al, 1976(Prengle et al, ,1980Wentworth and Chen, 1976;Wyman, Castle and Kreith, 1980). Those liquid phase systems which have been proposed have typically been based on photochemistry as opposed to thermochemistry , with attendant low quantum yields and side reaction difficulties (Bolton, 1978;Hautala, King and Kutal, 1979;Jones, Reinhardt and Bergmark, 1978).…”

Section: (4)mentioning

confidence: 99%

Liquid phase thermochemical energy conversion systems—An application of Diels-Alder chemistry

Lenz

Hegedus

Vaughan

1982

Int. J. Energy Res.

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Thermochemical energy conversion at moderate or low temperature (> about 400°C) employing liquid phase components throughout a cycle is suggested as a promising concept for high‐efficiency conversion of various energy sources (e.g. solar or industrial waste heat) to a convenient chemical form. In particular, we propose liquid phase Diels‐Alder cycloaddition chemistry as an important class of reversible reactions for such low or moderate temperature thermochemical energy conversion systems. One of the important attributes of thermally driven Diels‐Alder reactions is their concerted mechanism, with consequent high yields and efficiencies relative to liquid photochemical systems. Since the systems we propose involve organic species, with thermal stability concerns above about 400°C, it is important to demonstrate equilibrium shift capability for the highly energetic reactions sought. We have therefore carried out experimental studies with model liquid Diels‐Alder systems that clearly demonstrate the degree of control over equilibrium available through substituent entropy effects. For example, Keq is unity at about 420°C (T*) for the anthracene/maleic anhydride system (in solvent) while a phenyl substituent on the anthracene or isopropyl substituent on the anhydride reduce T* to about 200°C at constant ΔH0. These results are of importance as regards subsequent systematic identification of Diels‐Alder reactions having ideal thermochemical and physical properties. We also have developed a rapid NMR technique for qualitative screening of candidate reactions, and have applied this technique to the study of various bicyclic diene/fumaric acid ester systems. Our paper further points to the need for better understanding of the catalysis likely required for these liquid phase Diels‐Alder reactions.

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“…tend to require high-energy photons (300-450 nm). Thus, TR-358 55illl-l-----------------=-=--~ these systems exhibit low solar efficiencies and are not competitive with existing solar technologies for low-temperature ( 200° C) heat (Jones et al 1978). Further research is important in order to discover new molecular systems and to determine the precise mechanisms of photoisomerization, especially in sensitized processes for which it may be possible to extend the effective range of the solar spectrum.…”

Section: Unimolecular Storagementioning

confidence: 99%

Basic Research Needs and Priorities in Solar Energy: Volume II, Technology Crosscuts for DOE

Jayadev¹,

Roessner²

1980

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Photon energy storage in organic materials— The case of linked anthracenes

Cited by 76 publications

References 52 publications

Dissociative and Photochemical Mechanisms of Intramolecular Tautomerism

Dissociative and Photochemical Mechanisms of Intramolecular Tautomerism

Liquid phase thermochemical energy conversion systems—An application of Diels-Alder chemistry

Basic Research Needs and Priorities in Solar Energy: Volume II, Technology Crosscuts for DOE

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