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Ladder-type PPPs with Methine Bridges

Ladder-type PPPs with Methine Bridges [Pg.20]

The planarisation of the PPP backbone in LPPP (3) has been found to lead to better vibrational resolution in both absorption and emission spec- [Pg.22]

The emission from 66 is slightly red shifted compared with 3, with an emission maximiun at A.max = 461 run and a secondary peak at kmax = 491 nm, so that the emission colour is blue-green. Unlike 3, Me-LPPP shows almost identical emission from films and solutions, with PL quantum efficiencies of over 90% in solution and up to 60% in the soUd state. There is a broad emission band centred at 560 nm, which has been attributed to emission from aggre- [Pg.23]

Ladder-type PPPs with Methine Bridges... [Pg.20]

See other pages where Ladder-type PPPs with Methine Bridges is mentioned: [Pg.34]    [Pg.234]    [Pg.3]    [Pg.19]   


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Ladder

Laddering

Ladders 2,3]-ladder

Methine

Methine bridge

Methine bridging

Methines

PPPs ladder-type

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