solution and solid states. In contrast, pyrenes bearing other alkyl groups exhibited an excimer emission in the solidstate, similar to that of the parent pyrene. On studying the photophysicalproperties in the solidstate with respect to the obtained crystal structures, the observed solid-state photophysicalproperties were found to depend on the relative position of the pyrene chromophores. The solid-state
A new molecule, 1,3,6,8-tetramethylpyrene (TMPY), with a similar shape to the luminescent material perylene has been successfully synthesized. The co-crystals with perylene doping have been grown and their crystal structure has been clarified by X-ray analysis. Optical spectra indicate that effective energy transfer has been achieved in the doping systems and the luminescence efficiency has reached as high as 78%. The pure TMPY shows p-type characteristics during the FET operation. The hole mobility is up to 0.26 cm2 V−1s−1.
我们成功合成了一种新分子--1,3,6,8-四甲基苯乙烯(TMPY),其形状与发光材料苝相似。掺杂了苝的共晶体已经生长出来,并通过 X 射线分析明确了其晶体结构。光学光谱显示,掺杂体系实现了有效的能量转移,发光效率高达 78%。纯 TMPY 在场效应晶体管工作期间显示出 p 型特性。空穴迁移率高达 0.26 cm2 V-1s-1。
Rearrangements of Radical Cations of [2.2]Paracyclophanes and of a bridged [14]annulene to those of pyrenes: An ESR and ENDOR study
作者:Fabian Gerson、Walter Huber、Thomas Wellauer
DOI:10.1002/hlca.19890720631
日期:1989.9.20
ESR and ENDOR studies have been carried out on the radical cations obtained consecutively by reaction of trans-10b, 10c-dimethyl-10b, 10c-dihydropyrene (4) with AlCl3 in CH2C12. The primarily formed rearranges at 253K to the radical cation(s) of 1,6- (5a) and/or 1,8-dimethylpyrene (5b). At 323K, the spectra of / are replaced by that of the highly persistent radical cation of 1,3,6,8-tetramethylpyrene