Synthesis and Photophysical Properties of Dihydroheptacenes: New Blue-Emitting Materials
摘要:
7,16-Dihydroheptacenes (1-3) substituted at the 6, 8, 15, and 17 positions are synthesized as blue emitters potentially useful in organic light emitting diodes (OLEDs). The photophysical properties of 1 - 3 ( lambda(max) = 424- 428 nm, Phi(F) = 0.15- 0.21, tau(F) = 2.35 - 2.67 ns in CH2Cl2) are discussed. They are shown to be stable and efficient blue emitters in the solid state (Phi(F) = 0.37 - 0.44). The X-ray crystal structure of 1 is reported.
Probing the spatial requirements for [60]fullerene–[60]fullerene π-stacking and the syn addition of [60]fullerenes across acenes
摘要:
The reaction between 2 equiv of [60]fullerene and 6,8,15,17-tetraphenylheptacene-7,16-quinone leads to both cis and trans-bis[60]fullerene adducts. This result contrasts sharply with the highly diastereoselective syn additions of [60]fullerenes across 6,13-diphenylpentacene and 6,8,15,17-tetraphenylheptacene. The importance of spatially dependent [60]fullerene-[60]fullerene pi-stacking interactions in promoting a syn addition of [60]fullerenes is discussed. (C) 2003 Elsevier Ltd. All rights reserved.
作者:Andreas J. Athans、Jonathan B. Briggs、Wenling Jia、Glen P. Miller
DOI:10.1039/b700956a
日期:——
The first systematic study concerning the hydrogenation of acenes and acenequinones is presented. Phenyl substituted acenes and acenequinones are hydrogenated in excellent yield and with complete regioselectivity using HI–AcOH. The resulting H-protected acenes bear alternating aromatic and non-aromatic rings and are stable, soluble molecules that may be stored indefinitely and then deprotected to afford the parent acenes. In this manner, H-protected acenes have been utilized in the syntheses of several [60]fullerene-acene adducts. Buckminsterfullerene also hydrogenates in HI–AcOH yielding C3v symmetric C60H18.
这是首次对烯和烯醌的氢化进行系统研究。使用 HI-AcOH 对苯基取代的烯和烯醌进行氢化,产量极高且具有完全的区域选择性。生成的受 H 保护的烯具有交替的芳香环和非芳香环,是稳定的可溶性分子,可无限期储存,然后进行脱保护以得到母烯。通过这种方式,受 H 保护的烯已被用于合成多种 [60] 富勒烯-烯加合物。Buckminsterfullerene 也会在 HI-AcOH 中发生氢化反应,生成 C3v 对称的 C60H18。
[EN] METHOD FOR THE PREPARATION OF A PARTIALLY HYDROGENATED POLYACENE AND AN INTERMEDIATE THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UN POLYACÈNE PARTIELLEMENT HYDROGÉNÉ ET D'UN INTERMÉDIAIRE DE CELUI-CI
The present invention relates to a process for preparing a partially hydrogenated polyacene, and a novel intermediate used in such process; also the present invention relates to a process for preparing the corresponding conjugated polyacenes.
The present invention relates to a process for preparing a partially hydrogenated polyacene, and a novel intermediate used in such process; also the present invention relates to a process for preparing the corresponding conjugated polyacenes.
The present invention relates to a process for preparing a partially hydrogenated polyacene, and a novel intermediate used in such process; also the present invention relates to a process for preparing the corresponding conjugated polyacenes.
Fullerene−Acene Chemistry: Diastereoselective Synthesis of a <i>cis,cis</i>-Tris[60]fullerene Adduct of 6,8,15,17-Tetraphenylheptacene
作者:Glen P. Miller、Jonathan Briggs
DOI:10.1021/ol0356791
日期:2003.10.1
A one-pot, diastereoselective synthesis of a cis,cis-tris[60]fullerene adduct of 6,8,15,17-tetraphenylheptacene has been demonstrated starting from [60]fullerene and 5,7,9,14,16,18-hexahydro-6,8,15,17-tetraphenylheptacene.