Exploring the impact of central core modifications among several push-pull configurations to enhance nonlinear optical response

Structural parameter-modulated nonlinear optical amplitude of acceptor–π–D–π–donor-configured pyrene derivatives: a DFT approach

“…The abovementioned factors affect the second hyper polarizability hgi amplitudes for MCPTD1-MCPTD8 too. 69 The maximum hgi amplitude (8.6024 Â 10 7 esu) was also found in MCPTD7. Overall, the decreasing trend of all of the studied compounds was observed as:…”

“…It may be deduced from the aforementioned discussion that the electronwithdrawing nature of the acceptors with the pi-conjugation and thienyl moieties played a pivotal role and yielded remarkable NLO amplitudes. 69…”

Exploration of Nonlinear Optical Properties of Triphenylamine-Dicyanovinylene Coexisting Donor-π-Acceptor Architecture by the Modification of π-Conjugated Linker

“…It has been determined by both experimental and theoretical inspection that D−π−A types of designed dyes show excellent NLO responses (Khan et al, 2018b). Furthermore, the optimal length of π-conjugation, composited in between donor and acceptor, also contributes to an increased NLO response (Saeed et al, 2020). That is why, in this study, we have tailored the π-conjugated system and designed the D-π-A type of compounds (DPTM-1 to DPTM-12).…”

Chemically Modified Quinoidal Oligothiophenes for Enhanced Linear and Third-Order Nonlinear Optical Properties

“…22−24 To increase the efficiency of NLO materials, different strategies have been adopted to address the issue of novel arising innovations. Conventionally, these strategies included the D−π−A (donor−π−acceptor) model, 25 bond length alteration (difference between the distance of average single and double bonds in the conjugated framework) theory, 26 switching perturbations, 27 molecules with auxiliary donor and acceptors model, 28 noncovalent charge transfer, 29 chromophores with twisted-π electron systems, 30 extension in π-conjugation of the molecular structure, and so on. 31 A lot of theoretical and experimental investigations have shown that extending the length of πconjugation can dramatically enhance the NLO response in organic molecules, making them leading candidates for NLO materials.…”

“…A considerable amount of research interest has been focused on developing organic NLO materials with larger values of second- and third-order NLO properties. , Possibility in tuning the absorption wavelengths and chemical structures of organic materials is a key factor to design these materials with tremendously efficient NLO characteristics to be used in integrated optics, optical switching, and organic light-emitting diodes. − To increase the efficiency of NLO materials, different strategies have been adopted to address the issue of novel arising innovations. Conventionally, these strategies included the D−π–A (donor−π–acceptor) model, bond length alteration (difference between the distance of average single and double bonds in the conjugated framework) theory, switching perturbations, molecules with auxiliary donor and acceptors model, noncovalent charge transfer, chromophores with twisted-π electron systems, extension in π-conjugation of the molecular structure, and so on . A lot of theoretical and experimental investigations have shown that extending the length of π-conjugation can dramatically enhance the NLO response in organic molecules, making them leading candidates for NLO materials .…”