Luminescent Charge-Transfer Complexes: Tuning Emission in Binary Fluorophore Mixtures

作者：Gujrati Maneesh D; Kumar N S Saleesh; Brown Adrienne S; Captain Burjor; Wilson James N^*

来源：Langmuir, 2011, 27(11): 6554-6558.

DOI：10.1021/la2012809

Charge-transfer (CT) complexes composed of a pi-electron-poor naphthalene diimide (NDI) derivative combined with a series of pi-electron-rich donors were investigated. Solutions of the CT complexes are nonemissive; however, solid-state complexes and aqueous suspensions display emission that is dependent on the energy of the HOMO of the electron donor. Crystallographic analysis of a pyrene-NDI complex reveals columnar packing and a high degree of frontier molecular orbital (FMO) overlap that likely contributes to the observed optical properties. The fluorescent CT particles are utilized as imaging agents; additional luminescent CT complexes may be realized by considering FMO energies and topologies.

• 出版日期2011-6-7