Three Asymmetrical Conjugated D-π-D' Sulfur-Containing Chromophores with a Focus on Two-Photon Absorption

2011 ◽  
Vol 64 (2) ◽  
pp. 174 ◽  
Author(s):  
Zhang-Jun Hu ◽  
Rui-Long Zhang ◽  
Ping-Ping Sun ◽  
Lin Li ◽  
Jie-Ying Wu ◽  
...  

Three novel asymmetrical D-π-D′ type sulfur-containing chromophores, (E)-4-(4-(benzylthio)styryl)-N,N-diethylbenzenamine (S1), (E)-4-(4-(tert-butylthio)styryl)-N,N-diethylbenzenamine (S2) and (E)-4-(4-(thio)styryl)-N,N-diethylbenzenamine (S3), were synthesized and characterized. Two kinds of substituents and hydrogen were introduced into the three different chromophores to investigate the influence of electron distribution on the sulfur atom. Meanwhile, a simple synthetic strategy of π-conjugated 4-(thio)styrene derivatives was performanced successfully. Linear and non-linear optical properties of S1, S2 and S3 were investigated both experimentally and theoretically. The optical properties indicate that they all have obvious characteristics of asymmetrical dipole molecules. The measured maximum two-photon cross-sections of S1–3 are 79, 57 and 19 GM (Goeppert-Mayer), respectively. It shows that the different substituents on the sulfur atom in molecules S1–3 lead to different electronic structures, which affect the optical properties. In these structures, the aromatic benzyl substituent (in S1) is superior for optimizing two-photon activity in the designed molecular framework.

Nanoscale ◽  
2014 ◽  
Vol 6 (22) ◽  
pp. 13572-13578 ◽  
Author(s):  
Isabelle Russier-Antoine ◽  
Franck Bertorelle ◽  
Marin Vojkovic ◽  
Driss Rayane ◽  
Estelle Salmon ◽  
...  

We developed a new method for synthesizing atomically monodisperse Au15 nanoclusters stabilized with glutathione molecules, and investigated their nonlinear optical (NLO) properties after two-photon absorption.


RSC Advances ◽  
2017 ◽  
Vol 7 (18) ◽  
pp. 10992-10999 ◽  
Author(s):  
Hugo Gattuso ◽  
Antonio Monari ◽  
Marco Marazzi

Linear and non-linear optical properties of a known photosensitizer producing singlet oxygen, chlorin e6, have been studied, including dynamics effects.


2016 ◽  
Vol 18 (24) ◽  
pp. 16404-16413 ◽  
Author(s):  
Harald Ceymann ◽  
Arnulf Rosspeintner ◽  
Maximilian H. Schreck ◽  
Carina Mützel ◽  
Andreas Stoy ◽  
...  

Our investigation of the nonlinear optical properties of a series of oligomeric squaraine dyes showed enhanced cross sections for linear oligomers but only additivity for branched systems.


2015 ◽  
Vol 3 (15) ◽  
pp. 3730-3744 ◽  
Author(s):  
C. Lavanya Devi ◽  
K. Yesudas ◽  
Nikolay S. Makarov ◽  
V. Jayathirtha Rao ◽  
K. Bhanuprakash ◽  
...  

A series of fluorenylethynylpyrene derivatives with large two-photon absorption cross-sections (≈250–2500 GM) and good fluorescence quantum yields (Φfl = 0.55–0.98) and with high two-photon brightness were synthesized.


2016 ◽  
Vol 14 (6) ◽  
pp. 2025-2033 ◽  
Author(s):  
Marek Grzybowski ◽  
Artur Jeżewski ◽  
Irena Deperasińska ◽  
Daniel H. Friese ◽  
Marzena Banasiewicz ◽  
...  

A donor–acceptor type π-expanded diketopyrrolopyrrole behaves as non-centrosymmetric as far as linear optical properties are concerned but as ‘pseudo-symmetric’ for two-photon absorption.


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