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Chlorophylls aggregated state

In the literature, LB films of chlorophyll a have been investigated by many techniques [21,27,28]. In particular, Chapados et al. [29] have studied the aggregation state of chlorophyll a in LB films with electronic and infrared spectroscopies. Their results suggest many points. First, immediately after the fabrication of the film (time zero) the ketone group C = 0 of one chlorophyll a molecule links to the magnesium of an adjacent chlorophyll a molecule to form a dimer. Each dimer interacts via water with another dimer to... [Pg.646]

Clarke and co-workers extended the triplet state double resonance spectroscopy also to chlorophyll aggregate systems in using the... [Pg.42]

Aggregation of the pyrochlorophyll a dimer molecules could also be responsible for the large variation of lifetime with solvent and temperature. The degree of aggregation of chlorophyll a is sensitive to concentration. The excited singlet-state lifetime of folded pyrochlorophyll a dimer in each chlorocarbon solvent used in this study does not depend on concentration in the range 10 to 10 M. [Pg.615]

See other pages where Chlorophylls aggregated state is mentioned: [Pg.124]    [Pg.197]    [Pg.291]    [Pg.138]    [Pg.357]    [Pg.134]    [Pg.1168]    [Pg.324]    [Pg.3236]    [Pg.336]    [Pg.138]    [Pg.61]    [Pg.32]    [Pg.975]    [Pg.461]    [Pg.229]    [Pg.58]    [Pg.382]    [Pg.8]    [Pg.758]    [Pg.60]    [Pg.282]    [Pg.286]    [Pg.291]    [Pg.35]    [Pg.362]    [Pg.1897]    [Pg.549]    [Pg.255]    [Pg.42]    [Pg.65]    [Pg.466]    [Pg.365]    [Pg.298]    [Pg.85]    [Pg.196]    [Pg.335]    [Pg.667]   
See also in sourсe #XX -- [ Pg.357 , Pg.359 , Pg.360 , Pg.361 ]



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