Ketocyanine dyes: impact of conjugation length on optical absorption and third-order polarizabilities

2015 ◽  
Vol 17 (19) ◽  
pp. 12988-12999 ◽  
Author(s):  
Kada Yesudas ◽  
Eluvathingal D. Jemmis ◽  
Kotamarthi Bhanuprakash
Keyword(s):  
Optical Absorption ◽  
Structure Property ◽  
Conjugation Length ◽  
Third Order ◽  
Structure Property Relationships ◽  
Ketocyanine Dyes

Structure–property relationships are proposed for tuning the optical absorption of ketocyanine dyes and to obtain large negative third-order polarizabilities.

Effect of conjugation length on the properties of fused perylene diimides with variable isoindigos

2019 ◽  
Vol 7 (39) ◽  
pp. 12263-12269 ◽  
Author(s):  
Yaping Yu ◽  
Ning Xue ◽  
Chengyi Xiao ◽  
Mahesh Kumar Ravva ◽  
Yanjun Guo ◽  
...  
Keyword(s):  
Structure Property ◽  
Conjugation Length ◽  
Perylene Diimides ◽  
Structure Property Relationships

We have synthesized a series of fused hybrid perylene diimides and isoindigos, and investigated their structure–property relationships.

Structure−Property Relationships in Third-Order Nonlinear Optical Chromophores

1998 ◽  
Vol 102 (23) ◽  
pp. 4451-4465 ◽  
Author(s):  
Rik R. Tykwinski ◽  
Ulrich Gubler ◽  
Rainer E. Martin ◽  
François Diederich ◽  
Christian Bosshard ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Structure Property ◽  
Third Order ◽  
Structure Property Relationships ◽  
Nonlinear Optical Chromophores ◽  
Optical Chromophores

RESONANT THIRD-ORDER OPTICAL NONLINEARITIES OF HIGHLY-SUBSTITUTED PHTHALOCYANINE DERIVATIVES

2006 ◽  
Vol 15 (01) ◽  
pp. 167-178 ◽  
Author(s):  
GANG FU ◽  
KAZUO KASATANI ◽  
HIROAKI OKAMOTO
Keyword(s):  
Metal Atom ◽  
Central Metal Atom ◽  
Central Metal ◽  
Optical Nonlinearities ◽  
Structure Property ◽  
Third Order ◽  
Solid Films ◽  
Structure Property Relationships ◽  
Molecular Hyperpolarizability ◽  
Molecular Stacking

Third-order optical nonlinearities of three highly-substituted phthalocyanines (Pcs) containing central metal atom VO , Al , and Cu were investigated under resonant conditions by femtosecond degenerate four-wave mixing. The dynamics of the nonlinear response was found to be strongly dependent on the nature of the central metal atom and molecular stacking form. The electronic molecular hyperpolarizability of the Pcs was evaluated and compared with their structure-related analogues. The electronic third-order susceptibilities of the solid films containing the Pcs were determined to be in the range of 10-10 to 10-9 esu. We attempt to give structure-property relationships in these macrocyclic compounds.

A Three-Level Model Useful for Exploring Structure/Property Relationships for Molecular Third Order Optical Polarizabilit1Es

1992 ◽  
Vol 247 ◽  
Author(s):  
C. W. Dirk ◽  
L-T. Cheng ◽  
M. G. Kuzyk
Keyword(s):  
Free Electron ◽  
Electronic Structures ◽  
Structure Property ◽  
Molecular Electronic ◽  
Third Order ◽  
First Order ◽  
Two Photon ◽  
Structure Property Relationships ◽  
Squarylium Dye ◽  
Level Model

ABSTRACTApproximations are applied to the three-level perturbation theory expressions for the third order optical polarizability. We conclude there will be three competing dominant terms, γ ≈ γc + γn + γtp each of which can be optimized at different molecular electronic structures. The two-photon term, γtp, has been commonly ascribed as the most dominant one for γ. However, the other two terms, which optimize at different structures, potentially offer equivalent or larger overall γ. The term, γn, will be optimized at structures with large second order polarizability β, while the term, γC, optimizes at certain centrosymmetric free electron structures with large first order polarization, α Optimization by γc is the preferred route, since this leads to elimination of the canceling terms which limit optimization by γtp or γn. Recent EFISH results have confirmed our earlier speculations that the free electron squarylium dye structures are particularly good for optimization by way of γc. Strategies are presented to selectively optimize to either of the three structure types and to obtain molecules with even larger γ.

Acceptor-SubstitutedS,N-Heteropentacenes of Different Conjugation Length: Structure-Property Relationships and Solar Cell Performance

2015 ◽  
Vol 25 (22) ◽  
pp. 3414-3424 ◽  
Author(s):  
Hannelore Kast ◽  
Amaresh Mishra ◽  
Gisela L. Schulz ◽  
Marta Urdanpilleta ◽  
Elena Mena-Osteritz ◽  
...  
Keyword(s):  
Solar Cell ◽  
Cell Performance ◽  
Structure Property ◽  
Conjugation Length ◽  
Solar Cell Performance ◽  
Structure Property Relationships

scholarly journals Structure–property relationships and third-order nonlinearities in diketopyrrolopyrrole based D–π–A–π–D molecules

2017 ◽  
Vol 13 ◽  
pp. 2374-2384 ◽  
Author(s):  
Jan Podlesný ◽  
Lenka Dokládalová ◽  
Oldřich Pytela ◽  
Adam Urbanec ◽  
Milan Klikar ◽  
...  
Keyword(s):  
Emission Spectra ◽  
Coupling Reactions ◽  
Structure Property ◽  
Scanning Calorimetry ◽  
Third Order ◽  
Third Harmonic ◽  
Fundamental Properties ◽  
Cross Coupling Reactions ◽  
Structure Property Relationships ◽  
Target Molecules

Nine new quadrupolar chromophores based on diketopyrrolopyrrole were designed and prepared by cross-coupling reactions. The property tuning has been achieved by structural variation of the peripheral substituents (donor) and enlargement of the π-system. Fundamental properties of target molecules were studied by differential scanning calorimetry, electrochemistry, and absorption and emission spectra. Nonlinear optical properties were studied by measuring the third harmonic generation. The experimental data were completed by quantum-chemical calculations and structure–property relationships were elucidated.

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