Unsymmetrically functionalized pentacenes with electron-rich and/or -poor substituents at the 6- and 13-positions were synthesized. The electronic influence was evaluated by solution-state UV-vis absorption and emission spectroscopies. These materials exhibit good solubility in common organic solvents and are stable in the presence of air and water.
Pentacene-Based Polycyclic Aromatic Hydrocarbon Dyads with Cofacial Solid-State Ï-Stacking
作者:Dan Lehnherr、Adrianâ H. Murray、Robert McDonald、Michaelâ J. Ferguson、Rikâ R. Tykwinski
DOI:10.1002/chem.200902179
日期:2009.11.23
Give me five! Pentacene‐based polycyclic aromatic hydrocarbon (PAH) dyads are synthesized via an unsymmetrical pentacene building block. These molecules exhibit cofacial solid‐stateπ‐stacking as a result of the large aromatic chromophores. The choice of the PAH attached to the pentacene (see picture) influences the electronic properties as determined by UV/Vis absorption/emission spectroscopy and
Synthesis and Electronic Properties of Conjugated Pentacene Dimers
作者:Dan Lehnherr、Jianbo Gao、Frank A. Hegmann、Rik R. Tykwinski
DOI:10.1021/ol801886h
日期:2008.11.6
Conjugated pentacene dimers 1-3 were synthesized in two steps from readily available precursors. Noteworthy is the initial step, which assembles five independent fragments to form the carbon-rich molecular framework. Solution-cast films of these materials are air stable. Photocurrent measurements for solution-deposited thin films show that dimer 3 exhibits photoconductive gain >10.
Exploring Electronically Polarized Pentacenes
作者:Dan Lehnherr、Robert McDonald、Rik R. Tykwinski
DOI:10.1021/ol801464k
日期:2008.10.2
Unsymmetrically functionalized pentacenes with electron-rich and/or -poor substituents at the 6- and 13-positions were synthesized. The electronic influence was evaluated by solution-state UV-vis absorption and emission spectroscopies. These materials exhibit good solubility in common organic solvents and are stable in the presence of air and water.