High Efficiency and Quadratic Nonlinear Optical Properties of a Fully Optimized 2D Octupolar Crystal Characterized by Nonlinear Microscopy
Source abstract
Abstract
An octupolar crystal is produced from octupolar molecules of 1,3,5-tricyano-2,4,6-tris(p-diethylaminostyryl)benzene and its structure is elucidated experimentally using the combined polarization analysis of two-photon fluorescence and second-harmonic generation (SHG). The optimal crystalline packing of the molecules in the crystal (which originates from intermolecular π–π stacking interactions)—see Figure—results in a large SHG efficiency.
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Research context
OpenAlex topics: Nonlinear Optical Materials Research · Nonlinear Optical Materials Studies · Porphyrin and Phthalocyanine Chemistry
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References (25)
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14. Intermolecular distances relative to π–π interactions. Offset face to face π–π interactions: 1) For the benzene ring composed of carbon atoms C1 to C6 (bz(C1–C6)) and bz(C12–C17(–y + 1 x – y z + 1/3)): centroid separation = 4.832 Å; dihedral angle = 25.7°. 2) For bz(C1–C6) and bz(C1–C6(–y + 1 x – y z + 1/3 or –x + y + 1 –x + 1 z – 1/3)): centroid separation = 5.115 Å; dihedral angle = 7.97°. 3) For bz(C12–C17) and bz(C36–C41(–x + y + 1 –x + 1 z – 1/3)): centroid separation = 5.464 Å; dihedral angle = 4.96°. Edge‐to‐face π–π interactions: 1) For bz (C12–C17) and bz(C24–C29(–y + 1 x – y z + 1/3)): centroid separation = 5.483 Å; dihedral angle = 63.1°. 2) For bz(C24–C29) and bz(C36–C41(–y + 1 x – y z + 1/3)): centroid separation = 5.303 Å; dihedral angle = 68.0°.
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