Polymers containing ring-strain energy. 1. New monomers and polymers based on cyclopropane, norbornadiene, and quadricyclane

Norbornadiene–quadricyclane as an abiotic system for the storage of solar energy

“…110 ± 112 Furthermore, NBDcontaining polymers can be used as energy-boosting additives for rocket fuel. 94 This review was financially supported by the Russian Foundation for Basic Research (Project Nos 02-03-32527 and 00-15-97320) and the Civilian Research and Development Foundation (CRDF) ± at the Russian Federation Ministry for Education (Grant No. REC-004).…”

“…5, 94 ± 103 For example, polyisoprene 51 is isomerised in a benzene solution in the presence of (PPh 3 ) 2 CuBr as the sensitiser. 94 The reaction 52 ? 51 is thermally reversible on heating of the polymer to 180 8C.…”

Fabrication of polyurethane binders grafted with functional reactive plasticizers by a catalyst‐free click reaction

“…The ring strain energy (RSE) is defined as the redundant energy of a ring strained molecule over the strain‐free molecule with the same amount of atoms . The liberation of the inherent RSE requiring an external driving force is desirable in organic synthesis and the energetic field . The strained hydrocarbon rings involved in energetic propellant binders are expected to improve the performance of propellant formulations (e.g., heat of formation).…”

Steric effect studies on solar energy storage of norbornadiene-quadracyclane system: DFT calculations

“…The conversion of quadricyclane, 2, to norbornadiene, 1, leads to generate heat energy. The 1/2 system is used for solar energy storage [5][6][7], in molecular switching [8][9][10], in optoelectronic devices [11][12][13][14], as a data storage compound [15,16], as photodynamic chemosensor for metal cations [17,18], as a potential photoresponsive organic magnet [19][20][21] and as an energetic binder for solid rocket propellants [22]. Use of sensitizers and chromophores on 1/2 system are two developments to maximize the solar energy storage [23].…”