photophysical properties exist despite their structural similarities. First, P2 exhibits a higher fluorescence intensity and lifetime (τF ∼ 1 ns) with respect to that for P1 (τF ∼ 11 ps), despite the fact that alkyl chains are known to deactivate excited states (“loose bolt effect”). Second, P2 exhibits concurrently a rare case of higher energy fluorescence associated with an upper Sn excited state, which is not
一种新的发光聚合物([Pt] -(AQI(OR)2))n,P2,其中AQI为
蒽醌二
亚胺,[Pt]为反式-双(
乙炔基苯)双(
三丁基膦)
铂(II),R为n-为了与相关聚合物([Pt] -(AQI(NO 2)2))n P1进行比较,已制备了丁基(大分子
化学与物理(2018),219(22),1800354)。除了取代基效应的差异(电子给体,O- n -Bu;电子受体,NO 2)时,第一个显着的区别是聚合物维其中加入可溶性链的预期地导致了较长的聚合物链为P2(P1:M Ñ = 88200,男瓦特 = 188700,DJ = 2.14,DP = 111; P2:M Ñ = 147000中,M瓦特 = 327000,DJ = 2.23,DP = 133)。然而,尽管它们的结构相似,但在光物理性质上存在意想不到的差异。首先,P2表现出更高的荧光强度和寿命(τ ˚F 〜1纳秒)相对于该为P1(τ ˚F 约11