کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
603298 880204 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evidence for water structuring forces between surfaces
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Evidence for water structuring forces between surfaces
چکیده انگلیسی

Structured water on apposing surfaces can generate significant energies due to reorganization and displacement of water as the surfaces encounter each other. Force measurements on a multitude of biological structures using the osmotic stress technique have elucidated commonalities that point toward an underlying hydration force. In this review, the forces of two contrasting systems are considered in detail: highly charged DNA and nonpolar, uncharged hydroxypropyl cellulose. Conditions for both net repulsion and attraction, along with the measured exclusion of chemically different solutes from these macromolecular surfaces, are explored and demonstrate common features consistent with a hydration force origin. Specifically, the observed interaction forces can be reduced to the effects of perturbing structured surface water.

Figure optionsDownload high-quality image (130 K)Download as PowerPoint slideHighlights
► The structural perturbations of water in tight spaces are briefly discussed.
► The osmotic stress technique for force measurement is described.
► Diverse biological systems show similar forces features at close spacings.
► The interaction of small molecules with macromolecules shows the same hydration force.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Opinion in Colloid & Interface Science - Volume 16, Issue 6, December 2011, Pages 551–556
نویسندگان
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