Violan

S. violaceus Viola method Violanthrone dyes Violan thrones Violet acid [578-85-8]... 

Inosilicate Pyroxene group Diopside Cr-diopside (violan) CaMg(SiOs)2 c,gr,br,y,bk 3.25-3.35 1.66-1.75 5-6 Two directional poor cleavage... 

The lower plate separated from the upper plate by an air gap is covered by a polymethyl methacrylate polymer into which organic dye (e.g. 16-17-diheptanyloxy-violan-throne) has been dissolved. The organic dye can be interchanged by a fluorescent complex. 

The systems that were used by this writer and colleagues contained one of some four or five different donor molecules—phthalocyanine, violan-threne, perylene, etc.—we found that almost any highly aromatic system could serve as a conducting matrix and phthalocyanine was only one of these. The electron acceptor systems that we used were o-chloranil (the most commonly used), iodine and tetracyanoethylene. These donor and acceptor systems were used in various combinations. A pattern of results based on a conductivity cell is shown in Figs. 3a, b, and c. It is made of aquadag electrodes on which is coated the matrix (phthalocyanine or violanthrene, as the case may be) usually the samples are sublimed onto the electrode system. On top of the matrix is placed one of the doping agents, one of the donors or acceptors. 

Cardenosa Cendrero JA, Sole-Violan J, Bordes Benitez A, et al. Role of different routes of tracheal colonization in the development of pneumonia in patients receiving mechanical ventilation. Chest 1999 116 462-470. 

M. Gerland, P. Violan, Secondary cyclic hardening and dislocation structures in type 316 stainless steel at 600°C, Mater. Sci. Eng. 84 (1986) 23—33. 

Trevino L, Sole-Violan L, Daumur P, Devallez B, Postel M, Riess JG. 1993. Molecular diffusion in concentrated fluorocarbon emulsions and its effect on emulsion stabUity. New J Chem 17 275. 

---