A Facile Synthesis of 1‐Hydroxy‐5‐chloro‐benzo[f][2,7]naphthyridines.

Sampathkumar, Natarajan; Ramalingam, S.; Rajendran, S. P.

doi:10.1002/chin.200615141

Cited by 1 publication

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“…The absorption peaks corresponding to CO and CN stretching occur at 1751 cm −1 and 1646 cm −1 , respectively, in the doped sample. The variation in the energy of these functional groups is indicative of good interaction between the molecules of the dopant and the matrix 13, 16, 17…”

Section: Resultsmentioning

confidence: 99%

“…The variation in the energy of these functional groups is indicative of good interaction between the molecules of the dopant and the matrix. 13,16,17 Nonlinear optical studies Figure 3 exhibits the OA and Figure 4 represents the division of the CA by OA data obtained from Z-scan measurements for the doped PMMA. The OA curve indicates the occurrence of nonlinear absorption.…”

Section: Ftir Studiesmentioning

confidence: 99%

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Third‐order nonlinear optical properties and two‐photon absorption in polymers doped with p‐phenyl sydnone

Shettigar¹,

Umesh

Chandrasekharan

et al. 2008

J of Applied Polymer Sci

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ABSTRACT:We report the measurements of the thirdorder susceptibilities and two-photon absorption in three different polymers doped with p-phenyl sydnone moiety viz., 2-benzylhydrazono-5-(3-p-tolylsydnone-4-yl)1,3,4,-thiadiazine, which is recently synthesized and characterized, with the prospective of reaching a good compromise between processability and high nonlinear optical properties. The measurements were done using nano second Z-scan at 532 nm. The Z-scan spectra reveal a large negative nonlinear refraction coefficient n 2 of the order 10 214 cm 2 /W and a two-photon absorption b, which is determined to be the order of cm/GW. The absorption cross section is 10 246 cm 4 s/photon. The molecular second-order hyperpolarizability in PMMA matrix was calculated to be 1.47 3 10 231 esu, comparable with stilbazolieum derivatives, a well-known class of optical materials for photonics and biophotonics applications. The chromophore shows its optical power limiting behavior in all the three polymer matrices. All these results suggest that this moiety has potential for the application of all-optical limiting and switching devices.

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Section: Resultsmentioning

confidence: 99%

Section: Ftir Studiesmentioning

confidence: 99%