TermUSA introduces new lower prices and announces the availibility of C60F48 and C60F36. To order call (510) 548-9979 (voice) or (510) 630-6722 (fax). TermUSA Pricelist Price list in USA$ per gram. Fullerene extract =>100g $14 => 25g 20 => 5g 30 C60 Amount >99.0 >99.5% >99.98% Sublimed < 5g $45 $50 $100 $200 5-50g 30 40 90 180 => 50g 35 80 C70 Amount >98.0% >99.0% =>0.25g $500 650 C60F48 =>100mg >98%purity $200/100mg C60F36 =>100mg >98% $300/100mg Complexes of C60 with organometallic compounds =>100mg >98% $100/100mg Orders for other complexes will be considered. Fullerene films 1. C60 films deposited in vacuum on substrates of Si, quartz, glass, Mo, or user supplied substrate; film thickness is up to 2 micrometers. Prices are $100 for the first and $50 for additional films on 10x10mm substrates. 2. C60 films doped with organometallic compounds (OMC): ferrocene-Fe(C5H5)2, cobaltocene-Co(C5H5)2 etc., produced both by co-condensation of C60 and OMC and by condensation of OMC on a substrate with fullerene films. The samples are sealed in ampules filled with Argon. Prices $150 for the first and $75 for additional films. 3. C60 films doped with Na K Cs. The samples are sealed in Ar ampules. Prices $200 for the first and $100 for the second film. 4. Other orders for fullerene films can be considered. Laboratory equipment for production of fullerenes 1. Generator of fullerene-containing soot with output up to 250g per working day (7 hours). 2. Soxhlet extraction apparatus made completely of stainless steel and fireproof. 3. Chromatographic columns for separation of fullerenes. Detailed information about the lab equipment including specification, prices, and delivery time are available. You will note that we are offering these products at very competitive prices. For further information, as well as if you have special requirements or need other fullerene materials, please feel free to contact us. For orders it is best to contact: TERM USA Michael Temerin 1409 Oxford St. #7, Berkeley, CA 94709 USA Phone: (510) 548-9979 Fax: (510) 530-6722 E-mail: temerin@ssl.berkeley.edu For scientific questions, it is best to contact: Prof. Lev Sidorov, Moscow State University Address: Lev Sidorov, Thermochemistry Lab., Department of Chemistry, Moscow State University, Moscow, Russia. Tel. (095)-939-1240 /5396/ E-mail: sidorov@thermo.chem.msu.su P.S. We are open for scientific cooperation. FREQUENTLY ASKED QUESTIONS: Dear Fullerene Researcher, During the last year we have occasionally received questions about our fullerene samples and below are answers to some typical ones. 1. COLOR. It can be black or brown due to the dimensions of the crystals. Very small crystals look brown and as a rule are formed under quick crystallization, for example from an ether. Sublimated crystals are brown and thus the most expensive samples are brown also. The above is true for purities from 99 up to 99.98%. 2. DIMENSIONS of CRYSTALS. DSC curve is very sensitive to the size of C60 fullerene crystals and a drastic change of heat of phase transition that occurs at 261K takes place if you grind good black crystals (from 8.0 J/g to 3-4 and even close to zero). There is no explanation but this phenomenon was discovered independently in France. (Europhys. Let., 24(7), pp.551-556(1993)), Sweden and our lab (see Proceedings of the last conference of American ECS in San Francisco, May 19-25, 1994. Fullerenes: Chemistry, Physics, and New Directions. ed. by K.M.Kadish and R.S.Ruoff). Again this is true for purities from 99-99.98%. 3. OTHER IMPURITIES (besides C70, C60-O, and higher fullerenes). TG measure- ments do not fix any weight loss of the samples at temperature range 400-500K. It follows that the admixture of volatile compounds is less than 0.1%. 4. SOLUBILITY. These data are available in literature and are true for our samples. In the case of the extract the undissolved part in less than 2%.