scholarly journals Photophysics of chlorin e6: from one- and two-photon absorption to fluorescence and phosphorescence

RSC Advances ◽  
2017 ◽  
Vol 7 (18) ◽  
pp. 10992-10999 ◽  
Author(s):  
Hugo Gattuso ◽  
Antonio Monari ◽  
Marco Marazzi
Keyword(s):  
Optical Properties ◽  
Singlet Oxygen ◽  
Photon Absorption ◽  
Chlorin E6 ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Non Linear ◽  
Linear Optical Properties ◽  
Linear Optical ◽  
Fluorescence And Phosphorescence

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

Non-linear optical properties of gold quantum clusters. The smaller the better

Nanoscale ◽  
2014 ◽  
Vol 6 (22) ◽  
pp. 13572-13578 ◽  
Author(s):  
Isabelle Russier-Antoine ◽  
Franck Bertorelle ◽  
Marin Vojkovic ◽  
Driss Rayane ◽  
Estelle Salmon ◽  
...  
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
New Method ◽  
Photon Absorption ◽  
Nlo Properties ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Non Linear ◽  
Quantum Clusters ◽  
Linear Optical Properties

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.

scholarly journals Solvatofluorochromic, non-centrosymmetric π-expanded diketopyrrolopyrrole

2016 ◽  
Vol 14 (6) ◽  
pp. 2025-2033 ◽  
Author(s):  
Marek Grzybowski ◽  
Artur Jeżewski ◽  
Irena Deperasińska ◽  
Daniel H. Friese ◽  
Marzena Banasiewicz ◽  
...  
Keyword(s):  
Optical Properties ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Donor Acceptor ◽  
Linear Optical Properties ◽  
Linear Optical

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.

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 ◽  
...  
Keyword(s):  
Optical Properties ◽  
Cross Sections ◽  
Sulfur Atom ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Synthetic Strategy ◽  
Linear Optical Properties ◽  
Styrene Derivatives ◽  
Sulfur Containing

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.

Organometallic Complexes for Non-Linear Optics. 51. Second- and Third-Order Non-Linear Optical Properties of Alkynylgold Complexes

2012 ◽  
Vol 65 (7) ◽  
pp. 834 ◽  
Author(s):  
Adam Barlow ◽  
Bandar Babgi ◽  
Marek Samoc ◽  
T. Christopher Corkery ◽  
Stijn van Cleuvenbergen ◽  
...  
Keyword(s):  
Optical Properties ◽  
Rayleigh Scattering ◽  
Organometallic Complexes ◽  
Photon Absorption ◽  
Imaginary Component ◽  
Linear Optics ◽  
Non Linear Optics ◽  
Non Linear ◽  
Linear Optical Properties ◽  
Linear Optical

The alkynes HC≡CC6H2-2,6-Et2-4-C≡CC6H4-4-NO2 (4) and HC≡CC6H4-4-C≡CC6H2-2,6-Et2-4-C≡CC6H4-4-NO2 (6) and gold alkynyl complexes Au{C≡CC6H2-2,5-(OEt)2-4-C≡CC6H4-4-NO2}(PPh3) (7), Au(C≡CC6H2-2,6-Et2-4-C≡CC6H4-4-NO2)(PPh3) (8), and Au(C≡CC6H4-4-C≡CC6H2-2,6-Et2-4-C≡CC6H4-4-NO2)(PPh3) (9) have been synthesized. The linear optical properties and quadratic optical non-linearities of 7–9 have been measured, the latter by hyper-Rayleigh scattering at 1064 nm, and compared with data for the previously reported complexes Au(C≡CC6H4-4-NO2)(PPh3) (10) and Au(C≡CC6H4-4-C≡CC6H4-4-NO2)(PPh3) (11). The optical absorption maximum red-shifts and the first hyperpolarizabilities increase on π-system lengthening and on introduction of electron-releasing substituents on the π-bridge ring adjacent to the metal centre. The cubic non-linear optical properties of 1,4-{(PCy3)Au(C≡C)}2C6H4 (12) and {(PCy3)Au(C≡C-4-C6H4C≡C)}6C6 (13) have been assessed by wide spectroscopic range femtosecond Z-scan studies; the maximal values of the imaginary component and the effective two-photon absorption cross-section increase markedly on proceeding from linear complex 12 to 6-fold-symmetric complex 13, an increase that is maintained when data are scaled by relative molecular weight.

scholarly journals Controlling the non-linear optical properties of MgO by tailoring the electronic structure

2020 ◽  
Vol 126 (3) ◽  
Author(s):  
Mukhtar Hussain ◽  
Hugo Pires ◽  
Willem Boutu ◽  
Dominik Franz ◽  
Rana Nicolas ◽  
...  
Keyword(s):  
Optical Properties ◽  
Electronic Structure ◽  
Non Linear ◽  
Linear Optical Properties ◽  
Linear Optical
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