Fluorene-Based Conjugated Oligomers for Organic Photonics and Electronics

Ultrafast Broadband Transient Absorption and Circular Dichroism Reveal Relaxation of a Chiral Copolymer

“…This suggests that the chiral-nematic structure is further stabilized. Pronounced steady-state CD signals have been previously observed for other annealed fluorene-based homo- and copolymers, such as PF or PFBT. ,,− ,,,− …”

Modular Approach to 9-Monosubstituted Fluorene Derivatives Using MoV Reagents

“…Other studies show that N -(2-(fluoren-9-yl)­ethyl)-propanamides 2 provide the same chronobiotical activity as melatonin . Recently, the unique properties of fluorene as a building block have been used to design a wide range of optoelectronic devices such as organic field effect transistors (OFET) and organic light emitting diodes (OLED). , Furthermore, the introduction of a fluorene group significantly improves the two-photon absorption cross section of organic chromophores …”

Selenophene-bearing low-band-gap conjugated polymers: tuning optoelectronic properties via fluorene and carbazole as donor moieties

“…Carbazole is one of the most popular moieties used in organic semiconductor devices such as OLED, solar cells, and nonlinear optical (NLO) materials either as a main core or as a substituent because of its excellent hole-transport capacity, high charge carrier mobility, and the formation of stable radical cations coupled with efficient thermal, morphological, and photophysical properties [25,26]. On the other hand, fluorene has been extensively used in optoelectronic devices due to ease of synthetic versatility at aromatic 2,7 and C-9 positions along with thermal and chemical stability [27,28]. So far, high efficiency, charge transport properties, excellent solubility and film-forming ability, good chemical and thermal stability, and tunable properties through chemical modifications and copolymerization make polyfluorenes as the most attractive blue-emitting materials [29,30].…”