메뉴 건너뛰기




Volumn 24, Issue 24, 2008, Pages 14176-14182

Thermodynamic description of bis-urea self-assembly: Competition between two supramolecular polymers

Author keywords

[No Author keywords available]

Indexed keywords

DIFFERENTIAL SCANNING CALORIMETRY; HYDROGEN; METABOLISM; PHASE DIAGRAMS; POLYMER SOLUTIONS; POLYMERS; SELF ASSEMBLY; TOLUENE; UREA; VISCOSITY MEASUREMENT;

EID: 61849171784     PISSN: 07437463     EISSN: None     Source Type: Journal    
DOI: 10.1021/la802367r     Document Type: Article
Times cited : (81)

References (54)
  • 3
    • 21744435758 scopus 로고    scopus 로고
    • Ciferri, A, Ed, Marcel Dekker: New York
    • Supramolecular Polymers; Ciferri, A., Ed.; Marcel Dekker: New York, 2005.
    • (2005) Supramolecular Polymers
  • 20
    • 0000273919 scopus 로고    scopus 로고
    • Martin, R. B. Chem. Rev. 1996, 96, 3043-3064.
    • (1996) Chem. Rev , vol.96 , pp. 3043-3064
    • Martin, R.B.1
  • 44
    • 61849143298 scopus 로고    scopus 로고
    • 7,8 means that the hexamer is expected to be much more stable than all shorter oligomers. Consequently, a nucleus of size 6 would make more sense than a nucleus of size 2. However, including this point in the model would significantly complicate the equations. Our present aim is to find the simplest possible model accounting for the experimental results.
    • 7,8 means that the hexamer is expected to be much more stable than all shorter oligomers. Consequently, a nucleus of size 6 would make more sense than a nucleus of size 2. However, including this point in the model would significantly complicate the equations. Our present aim is to find the simplest possible model accounting for the experimental results.
  • 45
    • 61849180358 scopus 로고    scopus 로고
    • 3 excluded interactions may be responsible for a coupling between supramolecular growth and tube orientation. In the present system, no birefringence was detected in the absence of flow; therefore, the effect of excluded interactions was neglected in the model.
    • 3 excluded volume interactions may be responsible for a coupling between supramolecular growth and tube orientation. In the present system, no birefringence was detected in the absence of flow; therefore, the effect of excluded volume interactions was neglected in the model.
  • 51
    • 61849095292 scopus 로고    scopus 로고
    • ITC experiments cannot be performed at higher concentrations because of the high viscosity of the solutions, and FTIR experiments cannot be performed at lower concentrations because of insufficient sensitivity
    • ITC experiments cannot be performed at higher concentrations because of the high viscosity of the solutions, and FTIR experiments cannot be performed at lower concentrations because of insufficient sensitivity.
  • 52
    • 61849167475 scopus 로고    scopus 로고
    • Self-association of ureas in general and bis-urea EHUT in particular have been shown to be highly cooperative: K2 <
    • 2 < -ΔH.
  • 53
    • 61849094781 scopus 로고    scopus 로고
    • In a previous publication, the experimental transition between filaments and free monomers was somewhat arbitrarily chosen as the midpoint of the ITC heat-flow jump.6 However, if we define the critical concentration (c*) as the point where the free monomer concentration is equal to the total filament concentration, then calculations show that c * is closer to twice the midpoint of the heat-flow jump Figures S4 and S5 in the Supporting Information
    • * is closer to twice the midpoint of the heat-flow jump (Figures S4 and S5 in the Supporting Information).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.