Low Molecular Weight Norbornadiene Derivatives for Molecular Solar-Thermal Energy Storage

• 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-substituted aromatic donor groups, leading to a good match with solar irradiation, quantitative photo-thermal conversion between the norbornadiene and quadricyclane, as well as high energy storage densities (396-629 kJ kg(-1)). The spectroscopic properties and energy storage capability have been further evaluated through density functional theory calculations, which indicate that the ethynyl moiety plays a critical role in obtaining the high oscillator strengths seen for these molecules.

Ämnesord

NATURVETENSKAP  -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Naturresursteknik -- Energisystem (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Environmental Engineering -- Energy Systems (hsv//eng)

NATURVETENSKAP  -- Kemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences (hsv//eng)

Nyckelord

v18

norbornadiene

donor-acceptor systems

ang pj

cis-form

synthesis-stuttgart

1979

high enthalpy

p652

quadricyclane

angewandte chemie-international edition in english

isomerization

molecular switches

substituted norbornadienes

azobenzene

1993

p5639

systems

harf hd

v72

journal of chemical physics

1980

p35

Chemistry

quadricyclane

electron-transfer

conversion

lean ad

devices

energy conversion

donor-acceptor systems

energy conversion

molecular switches

norbornadiene

quadricyclane

substituted norbornadienes

electron-transfer

high enthalpy

cis-form

isomerization

azobenzene

conversion

devices

systems

Chemistry

Publikations- och innehållstyp

art (ämneskategori)

ref (ämneskategori)