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Volumn 37, Issue 1, 2004, Pages 226-237

Core/shell structures of proteinlike copolymers: Are finite aggregates thermodynamically stable?

Author keywords

[No Author keywords available]

Indexed keywords

AGGLOMERATION; HYDROGEN; MONOMERS; PHASE DIAGRAMS; SOLUTIONS; STRUCTURE (COMPOSITION); THERMODYNAMIC STABILITY;

EID: 1642455781     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma030357y     Document Type: Article
Times cited : (18)

References (47)
  • 10
  • 15
    • 1642452207 scopus 로고    scopus 로고
    • note
    • To be definite we assume an aqueous solution; in the general case H units are just poorly soluble or insoluble while P units are soluble.
  • 19
    • 1642533913 scopus 로고    scopus 로고
    • notee
    • BT is considered as the energy unit.
  • 21
    • 1642452210 scopus 로고    scopus 로고
    • note
    • 0 stems from the surface repulsion of P units which can be partially released by convex bending of the surface.
  • 25
    • 1642574653 scopus 로고    scopus 로고
    • note
    • c, and the overall "swollen star" structure are then defined by invoking the elastic energy of long H blocks; see below.
  • 26
    • 1642493225 scopus 로고
    • Geometry and Interfaces
    • Dubois-Violette, E., Pansu, B., Eds.
    • Dubois-Violette, E., Pansu, B., Eds. Geometry and Interfaces; Proc. Aussois, 1990 (J. Phys. (Paris) 1990, 51 (23)).
    • (1990) Proc. Aussois, 1990 (J. Phys. (Paris) , vol.51 , pp. 23
  • 28
    • 1642493226 scopus 로고    scopus 로고
    • note
    • Precipitation at C̃ = 0 is a result of the spherical (cylindrical) approximation for the Wigner-Seitz cell of an inverse structure.
  • 29
    • 1642533914 scopus 로고    scopus 로고
    • note
    • We assume that the number fraction of short blocks is small. Therefore א, the total number of all H blocks, nearly coincides with the number of long blocks. With this condition the expression for the conformational free energy obtained below, eq 14, is asymptotically exact.
  • 30
    • 1642533915 scopus 로고    scopus 로고
    • note
    • A spherical aggregate is assumed; the result for D, apart from a numerical prefactor, is also applicable to other morphologies.
  • 31
    • 1642574654 scopus 로고    scopus 로고
    • note
    • 3 for high a's. Thus the region of high apparent a's just not accessible for small B's because of the effect of surface crumpling.
  • 38
    • 1642574652 scopus 로고    scopus 로고
    • note
    • The phase diagram is discontinuous at θ = 0: note a singularity in the equation defining ã at θ = 0. That is why there is no matching similarity between the diagrams shown in Figures 9 and 10.
  • 39
    • 1642452208 scopus 로고    scopus 로고
    • note
    • The term "proteinlike copolymer" is also widely used in a more specific sense assuming a certain sequence design procedure and/or a certain Levy-flight sequence statistics. The same term ("proteinlike") was also used in a different sense (not applicable in this paper) marking the ability of the copolymer to fold in a specific conformation (see, for example, ref. 27).
  • 41
    • 1642452209 scopus 로고    scopus 로고
    • note
    • Note that in all the cases the complete distribution is bimodal involving a lot of long blocks and some short blocks. So, the mean block length ñ always nearly coincides with the length of long blocks.
  • 43
    • 1642533917 scopus 로고    scopus 로고
    • note
    • A similar analysis for H-PH copolymers shows that the spontaneous surface curvature decreases as solvent quality worsens (i.e., as τ is increased) . Hence the following possible sequence of morphological transitions: homogeneous solution → "swollen star" aggregates → spheres → cylinders → layers → precipitate (see section 3).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.