Hume’s Account of Obligation

Wand, Bernard

doi:10.1007/978-1-349-15271-1_18

Cited by 2 publications

(3 citation statements)

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“…Marks and co-workers reported the use of 4,4-diphthalimidobenzil as a starting dicarbonyl compound. 12 The condensation product bearing protected amino groups was deprotected by hydrazinolysis to afford the target chromophore. Since the use of bulky phthaloyl group for protecting amino group could result in poor solubility of the substrates and harsh reaction conditions for hydrazinolysis, the chromophores were produced in poor overall yield.…”

Section: Resultsmentioning

confidence: 99%

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Design and syntheses of efficient and thermally stable diamino chromophores for NLO application

Wu¹,

Cheng²,

Wang³

2003

Arkivoc

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A novel series of diamino imidazole-type chromophores has been synthesized, which can be chemically incorporated into polymer matrices. Furthermore, their molecular optical nonlinearity, transparency and thermal stability were determined and studied comparatively. Theoretical calculation and experimental results indicate that good nonlinearity-transparencythermal stability is well balanced in chromophore 4, which possesses a µ g β 0 of 554.8×10-48 esu, a rather blue-shifted absorption peak at 384 nm in THF, and a high decomposition temperature T d of 377°C. It is strongly suggested from these results that multiple substitution strategy should be useful for designing novel NLO chromophores.

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Section: Resultsmentioning

confidence: 99%

“…Table 1. Characterization results for 2-(4-nitrophenyl)-4,5-di(aminophenyl)imidazole (I) also are listed in Table 1 for comparison 12 . It is found that all the four chromophores show larger µ g β 0 value than that of I, which is attributed to the positive contribution of their elongated conjugation lengths.…”

Section: Resultsmentioning

confidence: 99%

Design and syntheses of efficient and thermally stable diamino chromophores for NLO application

Wu¹,

Cheng²,

Wang³

2003

Arkivoc

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“…Previously, in a preparation of a lophin-type compounds, Marks and co-workers reported the use of 4,4'-diphthalimidobenzil as a starting dicarbonyl compound. 10 The condensation product was further hydrazinolysed to afford the target diamino product. Since the use of the bulky phthaloyl group as a protecting amino group could result in poor solubility of the substrates and due to the harsh reaction conditions for hydrazinolysis, the chromophores were produced in poor overall yield.…”

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confidence: 99%

Syntheses of NLO diamino chromophores containing imidazole and thiophene rings as conjugation linkage

Zhang

2004

Journal of Chemical Research

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Organic molecules with large first hyperpolarisabilities (β) have attracted considerable attention over the last 20 years for their potential applications in optical data storage, telecommunications and optical signal processing. 1,2 It is already well known that molecules containing electron-donor and electron-acceptor groups linked by a large conjugated framework possess large values of β. 3 Molecular nonlinearities can be significantly enhanced by increasing the donor and acceptor strength or the length of the conjugation pathway. 4 For example, compounds 1 and 2 shown in Scheme 1, represent the highest value of µ g β 0 (510.8 × 10 -48 /esu, 800.4 × 10 -48 /esu). 5 Although significant progress has achieved in the design and syntheses of such one dimensional dipole chromophores, 6,7 in order to make a useful device, NLO chromophores must be incorporated into a fabric version, such as poled polymers, LB films, self-assembled or crystal environments, etc. Among these, chemical incorporation of chromophores into a polymer backbone is probably the most important choice. Thus the NLO chromophores that bear reactive groups and can be covalently banded into a suitable molecular structure are greatly demanded. Up to now, only a few such chromophores have

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Hume’s Account of Obligation

Cited by 2 publications

References 0 publications

Design and syntheses of efficient and thermally stable diamino chromophores for NLO application

Design and syntheses of efficient and thermally stable diamino chromophores for NLO application

Syntheses of NLO diamino chromophores containing imidazole and thiophene rings as conjugation linkage

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