Optical Waveguides in Organic Crystals of Polycyclic Arenes

Abstract

Figure 1. Typical polycyclic arenes for optical waveguides.

New insights into structure/optical waveguide behavior relationships in linear bisethynylbenzenes

“…Over the last decade, several organic structures have been widely studied and reported in the literature. [26][27][28][29][30][31] In recent years, research in this field has focused on new challenges, aiming at improving the transmission information and achieving the implementation in real devices. For this reason, new structures with improved properties have been described, among which it is worth mentioning homo/heterostructures, 32,33 core/ shell structures, 34 architectures combining the active/passive waveguide behavior, 35 branched nanowire heterostructures (BNwHs), 36 an integrated optoelectronic device called organic field-effect waveguide (OFEW), 37 and structures with promising properties such as flexibility, 38 anisotropy 39,40 and chirality.…”

Crystal Engineering of a Tetraphenol with Bispyridines toward Hydrogen-Bonded Emissive Cocrystals

“…This is because the excited photons are impounded and transmitted along the length of the crystal to its end to emit, characteristic of optical waveguiding; this is a unique feature limited to a few emissive crystals, as described in the outset. The preliminary findings of the optical waveguiding 40 properties of the two cocrystals warrant detailed investigations for further quantification.…”

Assembling photoactive materials from polycyclic aromatic hydrocarbons (PAHs): room temperature phosphorescence and excimer-emission in co-crystals with 1,4-diiodotetrafluorobenzene

“…4,[23][24][25] Since the discovery of this family of compounds, scientists have proposed new applications for these pollutants, taking advantage of peculiar features such as their remarkable and unique electrical and optical properties. [26][27][28][29][30][31] By use of crystal engineering principles, [32][33][34][35] valuable applications for PAHs have been developed in recent years, ranging from optical waveguides, 36 OFET-devices, 37 and additives for improving photovoltaic cell performances, 38 to bright solids, including fluorescent, [39][40][41][42][43] room temperature phosphorescent [44][45][46][47][48][49][50][51] and ultralong phosphorescent materials. [52][53][54][55] In this context, co-crystallization of luminescent molecules proved to be a powerful tool for developing new materials and achieving emission type and color fine-tuning.…”