메뉴 건너뛰기




Volumn 36, Issue 25, 2003, Pages 9631-9637

Computer simulation of morphologies and optical properties of filled diblock copolymers

Author keywords

[No Author keywords available]

Indexed keywords

DENSITY FUNCTIONAL THEORY; FILLED DIBLOCK COPOLYMERS; PHOTONIC BAND GAP MATERIALS; POLYMER-PARTICLE INTERACTIONS; SELF-CONSISTENT FIELD THEORY;

EID: 0346392885     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma034322+     Document Type: Article
Times cited : (53)

References (36)
  • 17
    • 0032097115 scopus 로고    scopus 로고
    • Palkar, S. A.; et al. Langmuir 1998, 14, 3484.
    • (1998) Langmuir , vol.14 , pp. 3484
    • Palkar, S.A.1
  • 20
    • 0347273114 scopus 로고    scopus 로고
    • note
    • g can penetrate this sphere. Schmidt and Fuchs find better agreement with experimental studies on the mixing of polymers and colloids when the polymers are taken to be penetrable rather than impenetrable spheres. On the other hand, in real systems, the nanoparticles are solids and impenetrable to each other. Thus, hard-sphere interactions are needed to describe the behavior of these solid objects.
  • 22
    • 0346012090 scopus 로고    scopus 로고
    • note
    • The addition of the steric term to describe the interactions between the particles is warranted because within the free energy, not only must we capture the diblock behavior in the limit that the particle concentration approaches zero but also we must capture the behavior of the particle system as the diblock concentration approaches zero. In the limit that the particle concentration goes to zero, we are left with the SCFT expression, which has yielded good agreement with the observed experimental behavior for microphase-separated diblocks (see ref1). In the limit that the diblock concentration goes to zero, we recover the Tarazona DFT, which again has demonstrated good agreement with experiments on the liquid/solid phase transition in particle systems (see refs 23 and 24).
  • 25
    • 0346012091 scopus 로고    scopus 로고
    • note
    • 0, this term is roughly 10% of the total free energy. Nonetheless, this term is important for capturing the behavior of diblock/nanoparticle systems. This is clearly illustrated in the behavior of a binary particle mixture in the diblocks (see refs 7 and 9).
  • 33
    • 0347903405 scopus 로고    scopus 로고
    • note
    • The surface of particles will scatter electromagnetic radiation when the diameters of the particles are of the same order of magnitude as the wavelength of the light. In our simulations, we are interested in nanoparticles whose diameters are less than or comparable to 10 nm; these sizes are smaller than the wavelength in the optical regime. At much higher frequencies, the nanoparticles considered here may cause scattering, but sufficiently near the optical range of frequencies (which are of interest when considering photonic band gaps), light scattering can be assumed to be assumed to be small. Thus, the use of a mixing rule, which ignores such scattering effects, is valid for the frequencies of interest in this study.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.