Modelling the photosynthetic reaction centre: photoinduced electron transfer in a pyromellitimide-bridged ‘special pair’ porphyrin dimer
作者:J. A. Cowan、Jeremy K. M. Sanders、Godfrey S. Beddard、R. J. Harrison
DOI:10.1039/c39870000055
日期:——
resulting doubly-bridged compound showing rapid electrontransfer between the ‘specialpair’ porphyrindimer and the pyromellitimide acceptor; both the excited singlet and charge-separated states have been observed in picosecond absorption and emission experiments, and a closely related side-by-side analogue lacks these ‘specialpair’ properties, electrontransfer being ca. 1000 times slower.
The acceptor-porphyrin cyclophanes 2 and 4 with pyromellitic diimide (1) as strong electron-acceptor, and the corresponding porphyrin zinc complexes 3 and 5 were prepared by a route which differs considerably from that in the syntheses of previously prepared electron-acceptor porphyrincyclophanes. The conformations of these electron-acceptor-porphyrin cyclophanes are discussed based on 1H-NMR and
[EN] METHANOGEN INHIBITORS<br/>[FR] INHIBITEURS DE MÉTHANOGÈNE
申请人:PASTORAL GREENHOUSE GAS RES LTD
公开号:WO2022103281A1
公开(公告)日:2022-05-19
The present invention relates to a new class of methanogen inhibitors for ruminants, in particular new pyromellitic diimide derivatives for ruminants. The invention also extends to the use of such derivatives in ruminants to reduce methane production in the rumen and/or to enhance productivity in the ruminant.