Solvent dependent linear and nonlinear optical properties of triphenylamine unit incorporated difluoroboron β-diketonate complexes

Abstract

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Nonlinear Optical Properties and Applications of Fluorenone Molecular Materials

“…[16] Organic NLO materials, on the other hand, have been demonstrated to feature various advantages, including very high molecular hyperpolarizabilities, a large diversity of structures and ease of processing. [17][18][19][20][21][22] The fact that molecular structures of organic NLO dyes can be designed and synthesized with a large flexibility, together with the exploitation of multiple synergetic supramolecular interactions allows the construction of hierarchical self-assembled architectures on the micro-and nanoscale. [4,[23][24][25][26][27] This results in subwavelength scale materials with well-defined structures and highly anisotropic optical properties, that could serve as building blocks for integrated photonic circuits.…”

Aggregation Induced Emission and Nonlinear Optical Properties of an Intramolecular Charge-Transfer Compound

“…As can be seen from Figure 3 , the electron cloud on the HOMO orbital is more evenly distributed on the conjugated surface of N , N -dimethyl-benzene ring, while the electron cloud on the LUMO orbital is mainly located on the benzothiadiazole ring and the nitro group, with the electron cloud density on the benzene ring significantly reduced. The HOMO to LUMO charge transfer is mainly attributed to the n-π transition from donor to acceptor [ 28 ].…”

Aggregation‐induced emission materials for nonlinear optics

“…For the THG active AIEgens, the prototypical nonplanar DPA or triphenylamine (TPA) are adopted as strong donor along with α-cyanostilbene acting as strong acceptor, forming the patterns like D-π-A, D-A-D. Tian et al synthetized the AIEgen 1,1-dicyano-2-phenyl-2-(4diphenylamino)phenylethylene, referred to as DCPE-TPA based on a D-π-A skeleton with a deep-red emission. [157] This luminogen could generate three various aggregations relying on the packing model, showing polymorphismdependent luminescence. The DCPE-TPA NPs fabricated by encapsulating the DCPE-TPA molecules within polymer produced marked THG signal at 517 nm under 1550 nm laser excitation.…”

“…As mentioned, incorporating donor and acceptor components into the AIE backbone structure is an effective pathway to realize NLO effects [ 155,156 ] since this construction is vulnerable to the polarity of the surroundings. For the THG active AIEgens, the prototypical nonplanar DPA or triphenylamine (TPA) are adopted as strong donor along with α ‐cyanostilbene acting as strong acceptor, forming the patterns like D‐π‐A, D‐A‐D.…”