Erratum to “Stable polymeric materials for nonlinear optics: A review based on azobenzene systems” [Prog. Polym. Sci. 29 (2004) 45–74]

Sandhya, K; Pillai, C. K. S.; Tsutsumi, Naoto

doi:10.1016/j.progpolymsci.2010.06.001

Cited by 88 publications

(103 citation statements)

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“…Azopolymers, in particular, have been exploited owing to the properties arising from photoisomerization of the azo groups, especially the photoinduced anisotropy with polarized light [2,3]. The photoisomerization mechanism consists in the reorientation of the azobenzene groups through trans-cis-trans isomerization cycles, which produce an excess of chromophores oriented perpendicularly to the laser polarization direction [4,5].…”

Section: Introductionmentioning

confidence: 99%

Molecular-level interactions of an azopolymer and poly(dodecylmethacrylate) in mixed Langmuir and Langmuir–Blodgett films for optical storage

Ceridório¹,

Balogh²,

Caseli

et al. 2010

Journal of Colloid and Interface Science

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a b s t r a c tThe applicability of azopolymers in optical storage can be extended through the use of nanostructured films produced with the Langmuir-Blodgett (LB) technique, but the film properties need to be optimized since these polymers generally do not form stable Langmuir films to be transferred onto solid substrates. Here, photoinduced birefringence was investigated for mixed Langmuir-Blodgett films from the homo-0 -nitroazobenzene (HPDR1-MA) and poly(dodecylmethacrylate) (HPDod-MA). The interactions between these polymers were studied in Langmuir and LB films. Surface pressure-area isotherms pointed to molecular-level interactions for proportions of 51 mf%, 41 mf% and 31 mf% of HPDR1-MA. Phase segregation was not apparent in the BAM images, in which the morphology of the blend film was clearly different from that of the Langmuir films of neat homopolymers. Through PM-IRRAS, we noted that the interaction between the azopolymer and HPDod-MA affected the orientation of carbonyl groups. Strong interactions for the mixture with 41 mf% of poly(dodecylmethacrylate) led to stable Langmuir films that were transferred onto solid supports as LB films. The photoinduced birefringence of 101-layer mixed LB films show features that make these films useful for optical storage, with the advantage of short writing times in comparison to other azopolymer films.

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Section: Introductionmentioning

confidence: 99%

Molecular-level interactions of an azopolymer and poly(dodecylmethacrylate) in mixed Langmuir and Langmuir–Blodgett films for optical storage

Ceridório¹,

Balogh²,

Caseli

et al. 2010

Journal of Colloid and Interface Science

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“…[1][2][3][4][5][6][7][8] Because the success of many of these applications depends on the strength of the second-order NLO material, there has been a significant effort to improve the performance of second-order NLO organic and organometallic materials by designing molecules with large first hyperpolarizibilities (β). [9][10][11][12][13][14][15][16][17][18][19][20] Many of the most promising secondorder NLO materials are dipolar aromatic molecules possessing an electron donor and acceptor group, because larger second-order optical nonlinearities can arise from the intramolecular charge transfer between the opposite groups through their π-conjugated systems.…”

Section: Introductionmentioning

confidence: 99%

Syntheses, Crystal Structures and Photophysical Measurements of Phosphite‐Substituted Schiff Base and Azobenzene Ligands

et al. 2010

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Organic chromophores with charge asymmetry may exhibit significant second‐order nonlinear optical (NLO) properties. Metal complexes have been used as the donor, the acceptor, or as the bridge in some of these chromophores. Metal complexes may also be useful in dipolar chromophore orientation and in the building of large molecular structures, but this approach remains largely unexplored. We herein report the syntheses and characterization of a novel class of phosphite‐containing chromophores, O2N‐1‐C6H4‐4‐CH=N‐1‐C6H4‐4‐OP(OC6H4)2 (2) and O2N‐1‐C6H4‐4‐X=N‐1‐C6H4‐4‐OP(OC10H6)2 [X = CH (3), N (4)], and their transition‐metal complexes, cis‐Mo(CO)4(2)2 (5), PdCl2(2)2 (6), and cis‐Mo(CO)4(3)2 (7). The X‐ray crystal structures of 2 and 5 show that coordination of the phosphite ligand to the metal atom does not alter the conformation of the chromophore. Hyper‐Rayleigh scattering (HRS) measurements of the compounds in 1,4‐dioxane at 1064 nm indicate that phosphite functionalization causes a small decrease in the β values of the Schiff‐base chromophores {β [esu]: 47 × 10–30 (1), 25 × 10–30 (2), 30 × 10–30 (3} and no change in the β value of the azo chromophore {β [esu]: 62 × 10–30 (4)}. The larger β values of the cis‐Mo(CO)4L2 complexes {β [esu]: 38 × 10–30 (5), 41 × 10–30 (7)} as compared to those of the ligands (2 and 3) are consistent with the 90° orientation of two chromophores in the complexes.

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“…(7) indicates that the azobenzenes containing atoms with larger atomic volumes would possess higher λ max , because this descriptor increases with increased atomic volumes. (8) R4u is a GETAWAY descriptor and correlates with the experimental λ max values of 0.4527. The GETAWAY descriptors 45,46 have been proposed as chemical structure descriptors derived from a new representation of molecular structure, the molecular influence matrix.…”

Section: Resultsmentioning

confidence: 91%

“…Azobenzenes have been widely used as synthetic dyes with colors ranging from red to blue. 2,3 In addition to dyeing feature, azobenzenes possess some interesting properties such as the reversible cis-trans photoisomerization about the azo bond when irradiated, [4][5][6] and nonlinear optical (NLO) effect 7,8 related to the donoracceptor azobenzenes. Thus, azobenzenes have attracted much attention as materials in the development of nonlinear optical and storage data devices.…”

Section: Introductionmentioning

confidence: 99%

QSPR Study of the Absorption Maxima of Azobenzene Dyes

Wang²,

Liu³

et al. 2011

Bulletin of the Korean Chemical Society

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A quantitative structure-property relationship (QSPR) study was performed for the prediction of the absorption maxima of azobenzene dyes. The entire set of 191 azobenzenes was divided into a training set of 150 azobenzenes and a test set of 41 azobenzenes according to Kennard and Stones algorithm. A seven-descriptor model, with squared correlation coefficient (R 2 ) of 0.8755 and standard error of estimation (s) of 14.476, was developed by applying stepwise multiple linear regression (MLR) analysis on the training set. The reliability of the proposed model was further illustrated using various evaluation techniques: leave-many-out crossvalidation procedure, randomization tests, and validation through the test set.

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Erratum to “Stable polymeric materials for nonlinear optics: A review based on azobenzene systems” [Prog. Polym. Sci. 29 (2004) 45–74]

Cited by 88 publications

References 0 publications

Molecular-level interactions of an azopolymer and poly(dodecylmethacrylate) in mixed Langmuir and Langmuir–Blodgett films for optical storage

Molecular-level interactions of an azopolymer and poly(dodecylmethacrylate) in mixed Langmuir and Langmuir–Blodgett films for optical storage

Syntheses, Crystal Structures and Photophysical Measurements of Phosphite‐Substituted Schiff Base and Azobenzene Ligands

QSPR Study of the Absorption Maxima of Azobenzene Dyes

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Erratum to “Stable polymeric materials for nonlinear optics: A review based on azobenzene systems” [Prog. Polym. Sci. 29 (2004) 45–74]

Cited by 88 publications

References 0 publications

Molecular-level interactions of an azopolymer and poly(dodecylmethacrylate) in mixed Langmuir and Langmuir–Blodgett films for optical storage

Molecular-level interactions of an azopolymer and poly(dodecylmethacrylate) in mixed Langmuir and Langmuir–Blodgett films for optical storage

Syntheses, Crystal Structures and Photophysical Measurements of Phosphite‐Substituted Schiff Base and Azobenzene Li­gands

QSPR Study of the Absorption Maxima of Azobenzene Dyes

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Syntheses, Crystal Structures and Photophysical Measurements of Phosphite‐Substituted Schiff Base and Azobenzene Ligands