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Volumn 5, Issue 4, 1999, Pages 1338-1347

Dendritic polyglutamic porphyrins: Probing porphyrin protection by oxygen-dependent quenching of phosphorescence

Author keywords

Dendrimers; Luminescence; Oxygen; Porphyrinoids; Quenching

Indexed keywords

POLYGLUTAMIC ACID; PORPHYRIN;

EID: 0032943199     PISSN: 09476539     EISSN: None     Source Type: Journal    
DOI: 10.1002/(SICI)1521-3765(19990401)5:4<1338::AID-CHEM1338>3.0.CO;2-N     Document Type: Article
Times cited : (135)

References (80)
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    • note
    • [13].
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    • note
    • 13C NMR spectra of the generation 1 and 2 acid-terminated dendrimers, produced by hydrolysis, were found to be identical with the spectra of the same compounds which had been synthesized by a hydrogenation route. The latter does not cause the racemization.
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    • note
    • The resonances corresponding to the outer layer of glutamates were identified as the peaks of highest intensity. The internal glutamic carbons, however, give rise to multiple satellite signals. The additional branches attached to their termini increased the σC-C rotational barriers of the internal glutamic skeleton and thus produced a number of stabilized conformations.
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    • note
    • 2O): δ = 24.21, 30.97, 52.32, 171.87, 178.38.
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    • note
    • Peak of the highest intensity.
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    • note
    • SNR (signal-to-noise ratio) is defined here as the maximum signal count at the beginning of the phosphorescence decay curve, divided by the amplitude of noise at the baseline level.
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    • note
    • NOBz, were found to be much less soluble in chloroorganic solvents than the allyl-terminated dendrimers.
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    • note
    • 2O during the washing procedures.
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    • note
    • The main peak is due to the glutamates in the outer layer. These are accompanied by signals of lower intensity; these are produced by the internal glutamates.
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    • note
    • We failed to obtain satisfactory MALDI-TOF or analytical data for the compound 2b; however, after hydrolysis (and/or hydrogenolysis) it was quantitatively converted into material with properties identical to those of 2c which had been independently obtained by the hydrolysis of the allyl derivative 2a.
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    • note
    • See description of the spectrum in the text.
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    • note
    • r for 4a is 11194.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.