Ueber Sol-Gel-Systeme mit anisotropen Teilchen, II

Supramolecular gels – a panorama of low-molecular-weight gelators from ancient origins to next-generation technologies

“…During the 1920s, there were a number of further academic studies of dibenzoylcystine, including its application in brine, 94 and further studies of dye uptake. 95 In the years that followed, it is less easy to track development, although in a 1961 patent, the abilities of dibenzoylcystine as a hydrogelator are discussed in some detail.…”

Hans Zocher and Liquid Crystals

“…Цохер сделал еще несколько интересных работ. Так, были подробно исследованы растворы, содержащие анизометрические частицы: бензопурпурина [34], мочевой кислоты [35], сульфосалицилата натрия, ртути [36], меди, серебра, золота [37], меркуросульфосалицилатов [32,38], различных красителей [39], дибензилцистина [40], малоната бария [41] и бентонита [42]. Цохер считал все их золями, хотя среди них были и классические лиотропные жидкие кристаллы (см.…”

Colloidal Structures in Biology

“…Suitably concentrated aqueous gelatin solutions change their "viscosity" reversibly on mechanical agitation (14). Thixotropy is also found in non-aqueous systems, for instance, with colloidal barium malonate in a medium of methanol plus glycerol (59). The particles need not be of strictly colloidal size; suspensions of bentonite (7, 19, 20, 26) and clays (20) in water and aqueous solutions, pastes of powdered Solnhofen slate (15), etc., in water and aqueous solutions and of mercaptobenzothiazole (45) in many organic liquids are also thixotropic.…”