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Titolo:
Study on second harmonic generation of 9-benzylidene- substituted-10-methyl-9,10-dihydroacridines
Autore:
Song, HC; Jin, RH; Zheng, XL; Ying, BN;
Indirizzi:
Zhongshan Univ, Dept Chem, Guangzhou 510275, Peoples R China Zhongshan Univ Guangzhou Peoples R China 510275 510275, Peoples R China
Titolo Testata:
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
fascicolo: 14, volume: 57, anno: 2001,
pagine: 2729 - 2736
SICI:
1386-1425(200112)57:14<2729:SOSHGO>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
2ND-ORDER POLARIZABILITIES; SOLVATOCHROMIC METHOD;
Keywords:
9-benzylidene-10-methyl-9,10-dihydroacridines; second harmonic generation; second-order polarizability;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Song, HC Zhongshan Univ, Dept Chem, Guangzhou 510275, Peoples R China Zhongshan Univ Guangzhou Peoples R China 510275 Peoples R China
Citazione:
H.C. Song et al., "Study on second harmonic generation of 9-benzylidene- substituted-10-methyl-9,10-dihydroacridines", SPECT ACT A, 57(14), 2001, pp. 2729-2736

Abstract

Eight 9-benzylidene-substituted-10-methyl-9,10-dihydroacridine derivativeswere synthesized from acridine as starting material and were characterizedby H-1-NMR, C-13-NMR, Ms and elemental analysis. The second harmonic generation (SHG) values of these compounds were determined in powder using Nd:YAG as a laser source, as compared with urea powder, and the values of second-order polarizabilities the values of the composite magnitude (beta (CT mug)) of molecular hypersusceptibilities and their moment of these compounds were obtained by the solvatochromic method under ground state for everyone. The results showed that SHG value of 10 is higher than that of urea, the beta (CT mug) of 5 (107.8 x 10(-30) esu) is lower than that of 4-nitro-N,N-dimethylaniline (30 x 10(-30) esu); the beta (CT mug) of 7 (350.8 x 10(-30) esu) and 10 (244.6 x 10(-30) esu) are higher than that of 4-nitro-N,N-dimethylaniline; the beta (CT mug) of 8 (3553 x 10(-30) esu), 11 (1187 x 10(-30) esu) and 12 (1163 x 10(-30) esu) are much more higher than that of 4-nitro-N,N-dimethylaniline. The results demonstrated that this series of compoundspossesses good second-order nonlinear optical (NLO) property. The regular relationship could not be obtained between electronegativity of substituents (R) attached to benzylidene ring and SHG values or beta (CT mug) values although the Rs are different in electronegativity and should make an effecton the extent of intramolecular electron-transfer and would consequently influence SHG or beta (CT mug). The electron-withdrawing ability of R from benzylidene ring played an important role on lambda (max) of these compounds. (C) 2001 Elsevier Science BN. All rights reserved.

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Documento generato il 09/07/20 alle ore 00:39:25