Triplet states of copper and metal-free phthalocyanines
Triplet states of copper and metal-free phthalocyanines
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铜和不含金属的酞菁的三重态
DOI：
10.1039/f29787401870
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发表时间：
1978
期刊：
影响因子：
--
通讯作者：
T. Truscott
中科院分区：
文献类型：
--
作者：
J. Mcvie;R. S. Sinclair;T. Truscott
用激光闪光光解法研究了无金属酞菁（H_2Pc）和酞菁铜（CuPc）在氯代萘稀溶液（10~（-6）mol dm~（-3））中的三重态。对CuPc三重态的首次观察表明，它的寿命非常短（约35 ns），但三重态形成的量子效率（0.70）大于H2Pc（约0.14）。两种化合物的三重态吸收最大值均出现在λ 480 nm处，但CuPc的三重态能级（150 kJ）高于H2Pc的三重态能级（120 kJ）。（10~（-4）~10~（-5）mol dm~（-3））的两种酞菁分别产生短寿命（100 ns）和长寿命（100 ns）的荧光（2.5 µ s）瞬变，这归因于分散在氯萘中的微晶颗粒中激子的形成。
Laser flash photolysis has been used to characterise the triplet state of metal-free (H2Pc) and copper phthalocyanine (CuPc) in dilute (10–6 mol dm–3) solution in chloronaphthalene. This first observation of the triplet state of CuPc indicates that its lifetime is very short (∼35 ns), but the quantum efficiency of triplet formation ( 0.70) is greater than that for H2Pc (∼0.14). The triplet absorption maximum for both compounds occur at ≈480 nm, but the triplet energy level of CuPc (150 kJ) is higher than that for H2Pc (120 kJ).More concentrated solutions (10–4-10–5 mol dm–3) of both phthalocyanines give short-lived (100 ns) and long-lived (2.5 µs) transients, which have been attributed to the formation of excitons in microcrystalline particles dispersed in the chloronaphthalene.