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Volumn 309, Issue 5743, 2005, Pages 2037-2039

Chemistry: Fluorescent guest molecules report ordered inner phase of host capsule in solution

Author keywords

[No Author keywords available]

Indexed keywords

CARBOXYLIC ACIDS; ENCAPSULATION; SELF ASSEMBLY; SINGLE CRYSTALS; SOLUTIONS; SPECTROSCOPIC ANALYSIS; X RAY DIFFRACTION ANALYSIS;

EID: 25444446891     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.1116579     Document Type: Article
Times cited : (192)

References (32)
  • 2
    • 0035824388 scopus 로고    scopus 로고
    • Schumacher et al., Science 294, 2158 (2001).
    • (2001) Science , vol.294 , pp. 2158
    • Schumacher1
  • 18
    • 25444493008 scopus 로고    scopus 로고
    • note
    • 2) was 0.4443 (all data), where F is a structure factor. X-ray data were collected on a Bruker SMART 1000 charge-coupled device diffractometer (Bruker AXS, Madison, WI).
  • 19
    • 25444500878 scopus 로고    scopus 로고
    • note
    • Materials and methods are available as supporting material on Science Online.
  • 23
    • 25444471678 scopus 로고    scopus 로고
    • The molecular volume of PBA was calculated using the X-Seed program (www.x-seed.net).
  • 24
    • 25444482507 scopus 로고    scopus 로고
    • note
    • Three crystallographically unique interactions were evident two CH⋯π interactions, with CH-aromatic centroid distances of 2.832 and 2.930 Å; and one π-stacking interaction with an aromatic centroid-centroid distance of 3.847 Å.
  • 26
    • 25444481471 scopus 로고    scopus 로고
    • note
    • 13C NMR studies, were performed at much higher concentrations (3 mM) (76).
  • 27
    • 25444503136 scopus 로고    scopus 로고
    • note
    • In-house studies of PBA excimer emission (470 nm) are in agreement with the literature for the parent pyrene molecule (25).
  • 28
    • 25444493460 scopus 로고    scopus 로고
    • note
    • As the exciplex emission is quenched, its spectral maximum is also red shifted with the increase in microenvironmental polarity, in agreement the DMA-quenching literature (37).
  • 29
    • 25444439693 scopus 로고    scopus 로고
    • note
    • -6 M PBA were diluted to volume (2.5 ml) with solvent and were analyzed within 30 min of preparation.
  • 30
    • 25444507824 scopus 로고    scopus 로고
    • note
    • 2 Suprasil quartz cuvettes on an HP 8453 (Agilent Technologies, Palo Alto, CA) diode array spectrophotometer and a Cary Eclipse (Varian, Palo Alto, CA) spectrofluorometer, respectively. A slit width of 1 nm was used in the absorption measurements, and the emission settings were as follows: monochromator band passes of 2.5 nm, a step size of 2.5 nm, and scan rate of 120 nm/min. All spectra were absorption and/or blank corrected.
  • 32
    • 25444528126 scopus 로고    scopus 로고
    • note
    • We acknowledge NSF for financial support of this work. Crystallographic data for 1 [Cambridge Crystallographic Data Centre (CCDC) identification number 276051] can be obtained free of charge at www.ccdccam.acuk/conts/retrieving.html (or from the CCDC, 12 Union Road, Cambridge CB2 1EZ, UK; international fax: +44-1223/336-033; E-mail: deposit@ccdc.cam.acuk).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.