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Structure of physically cross-linked nanogels investigated by means of contrast variation small-angle neutron scattering

Sekine, Yurina   ; Endo, Hitoshi*; Iwase, Hiroki*; Fukazawa, Hiroshi; Mukai, Sadaatsu*; Akiyoshi, Kazunari*

Cholesterol-bearing pullulan (CHP) spontaneously forms stable nanogel of ca. 30 nm in size in water. Because the CHP nanogels can trap various proteins spontaneously and release them in their native form to environment, they are valuable for use in protein delivery systems, particularly for cancer vaccines, and so on. The distribution and position of cross-linking domain are important factor determining the properties of nanogels. The aim of this study is to investigate the distribution and position of cross-linking domain of nanogels by means of contrast variation small-angle neutron scattering (CV-SANS). We had the CV-SANS measurement of the CHP nanogel dispersed in complex solvent of D$$_{2}$$O/H$$_{2}$$O to clarify the microscopic structure of cross-linking domain of CHP nanogels. In this presentation, we will discuss the detailed structure of the CHP nanogel analyzed from the result of CV-SANS.

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