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Volumn 13, Issue 13, 2007, Pages 3724-3732

Extraction of radio-labelled xanthine derivatives by artificial receptors: Deep insight into the association behaviour

Author keywords

Caffeine; Extraction; Isotopic labelling; Receptors; Supramolecular chemistry

Indexed keywords

ASSOCIATION REACTIONS; BINDING ENERGY; DERIVATIVES; DICHLOROMETHANE; EXTRACTION; SUPRAMOLECULAR CHEMISTRY; TOLUENE;

EID: 34250379845     PISSN: 09476539     EISSN: 15213765     Source Type: Journal    
DOI: 10.1002/chem.200601231     Document Type: Article
Times cited : (30)

References (50)
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    • -4M in HEPES/NaOH buffer, pH 7.4) was extracted into the organic phase.
    • -4M in HEPES/NaOH buffer, pH 7.4) was extracted into the organic phase.
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    • A solubility of the individual receptor in the organic solvent of at least 0.0025 M is required.
    • A solubility of the individual receptor in the organic solvent of at least 0.0025 M is required.
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    • xanthine=0.0001 M in aqueous solution (pH 7.4).
    • xanthine=0.0001 M in aqueous solution (pH 7.4).
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    • -1. Therefore, the complex formation is definitely enthalpy driven. However, the differences between the receptors will also have entropic contributions. These are a matter of detailed ongoing investigations and will be further discussed in due course.
    • -1. Therefore, the complex formation is definitely enthalpy driven. However, the differences between the receptors will also have entropic contributions. These are a matter of detailed ongoing investigations and will be further discussed in due course.
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    • For the water-free binding of caffeine, the spiro ketals have to bend towards the triphenylene by approximately 10-15°
    • For the water-free binding of caffeine, the spiro ketals have to bend towards the triphenylene by approximately 10-15°.
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    • For comparison: 7d: 45.9% caffeine extraction; 1b-1h: > 98% caffeine extraction ([receptor] =0.001 M in toluene; 0.0001 M caffeine in HEPES/NaOH buffer, pH 7.4).
    • For comparison: 7d: 45.9% caffeine extraction; 1b-1h: > 98% caffeine extraction ([receptor] =0.001 M in toluene; 0.0001 M caffeine in HEPES/NaOH buffer, pH 7.4).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.