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Topic: Rubrene

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	Growth of crystalline rubrene films with enhanced stability (DOI: 10.1039/b507620j)
		This pronounced difference in film growth is related to the conformational change of rubrene molecules involving a loss of chirality upon crystallization and the enhanced diffusion which becomes possible at high temperature and large vapor pressure.
		Accompanied DFT calculations of the molecular geometry of rubreneperoxide yielded a bending of the last aromatic ring of the tetracene-backbone by 55° due to the oxygen as shown in Fig.
		A comparison of this structure with the molecular geometry and packing of rubrene in its crystal phase suggests that the oxidation of rubrene in single crystals is sterically hindered or requires a repacking.
	www.rsc.org /delivery/_ArticleLinking/DisplayHTMLArticleforfree.cfm?JournalCode=CP&Year=2005&ManuscriptID=b507620j&Iss=15 (2437 words)

	Rubrene - Wikipedia, the free encyclopedia
		Rubrene is used as a sensitiser in chemoluminescence.
		Crystals of rubrene and other organic semiconductors are generally grown in a modified zone furnace on a temperature gradient, by a technique known as Physical Vapor Transport.
		Rubrene holds the distinction of being the highest mobility organic semiconductor, with Podzorov et al.
	en.wikipedia.org /wiki/Rubrene (174 words)

	Organic electroluminescent elements - Patent 5601903
		The organic EL element of claim 5, wherein the first organic material includes a fluorescent material, and a maximum level of a valence band of the fluorescent material is equal to or higher than a maximum level of a valence band of the organic hole transport layer.
		The dopant for the organic luminous layer may be selected from Alq3, rubrene, DCM, decacyclene, NK-757, naphthacene, and DPA to have the minimum level of the conducting band lower than that of the material forming the organic luminous layer (preferably lower than that of the material forming the organic electron transport layer).
		Similarly, the dopant doping the organic electron transport layer may be selected from Alq3, rubrene, DCM, decacyclene, NK-757, naphthacene, and DPA to have the maximum level of the valence band higher than that of the material forming the organic electron transport layer (preferably higher than that of the material forming the organic luminous layer).
	www.freepatentsonline.com /5601903.html (6082 words)

	Ultrasensitive radiation dosimeter and dosimetry system - Patent 4853548
		The sample turned red (the color of rubrene) and when dissolved in benzene exhibited an absorption spectrum indistinguishable from that of rubrene, to confirm that solid rubrene endoperoxide produces rubrene on exposure to X-radiation.
		Thus as an alternative to the solution a sample of solid rubrene endoperoxide may be employed in the badge and system.
		OD.sub.530 of the exposed solution was found to be 0.13.+-.0.1 in a 10 cm path length absorption cell corresponding to a rubrene concentration of 1.1.+-.0.1.times.10.sup.-6 M. This exposed solution was equilibrated with air (to standarize oxygen quenching of rubrene fluorescence) and its fluorescence spectrum recorded on a spectrophotofluorimeter (Aminco-Keirs) with excitation at 500 nm.
	www.freepatentsonline.com /4853548.html (2950 words)

	Thèse EPFL 3487 (2006) Marie-Christine Blüm
		The investigations of the self-assembly of rubrene adsorbed on metal surfaces (Au(111), Au(100), Ag(111), and Ag(100)), which were carried out within the framework of this thesis, show a surprising diversity of supramolecular structures.
		The geometric shape of rubrene is characterized by a structural asymmetry leading to the existence of two mirror imaged versions of the molecule which are not superimposable to each other, such as for instance our left and right hand or the helical DNA.
		The semiconducting behavior of rubrene is furthermore probed by STS measurements detecting the energetic positions of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO).
	library.epfl.ch /theses/?nr=3487 (461 words)

	Growth of crystalline Rubrene films with enhanced stability
		In the present work we demonstrate for the case of rubrene that also the molecular conformation is important because it can be different for the gas phase and the crystalline phase.
		The apparent impossibility to prepare crystalline thin films of rubrene has encouraged us to unravel the differences in film growth and to overcome this obvious limitation.
		Optical micrographs of rubrene films grown from by OMBD at a rate of 25 °A/min on a) SiO2 and b) Au(111).
	www.rsc.org /Publishing/Journals/CP/News/Witte.asp (451 words)

	Search Results for- Rubrene: Rubrene - Cole-Parmer Catalog
		We have access to suppliers full lines— for products beyond what you see here.
		Rubrene and other Rho to Rz products are now available to order from the Cole Parmer Instrument Catalog.
		Click any Rubrene category to view all models and products.
	www.coleparmer.com /catalog/product_index.asp?cls=37986 (62 words)

	APS - 2006 APS March Meeting - Event - A Systematic Study of Metal Contacts on Single Crystalline Rubrene
		In organics, despite the technological importance of such interfaces, little is known about the fundamental mechanisms that govern their performance in real devices.
		We have studied a series of metal contacts on rubrene single crystals and find systematic dependence of the transport barrier on the metal workfunction.
		In the process of the study of metal-rubrene heterojunctions, we have realized an efficient single-crystal rubrene diode employing a hole-blocking metal contact.
	meetings.aps.org /Meeting/MAR06/Event/44417 (148 words)

	L37. Non-Linear Phenomenon in Magnetic Field Sensible Recombination of Radicals in Luminol Chemiluminescent Reaction in ...
		In particular, we analyzed such oscillations for the photoluminescence of rubrene polycrystalline films, which is also known to be magnetic field sensitive [4].
		It was shown previously that the vibrations passing through the inertial chemical system became phase-delayed and amplitude-attenuated in comparison with the oscillations of the RC and, besides, this delay and attenuation depend on the relation between the lifetime of intermediate stages and the oscillation frequency
		A thin film of crystalline rubrene was placed in the same MF and served as a reference sample.
	www.cstl.nist.gov /div838/kinet_conf/agenda/l_session/l37.html (691 words)

	3740-3742 (Site not responding. Last check: 2007-10-08)
		Highly c-axis oriented rubrene thin films were fabricated by combinatorial molecular beam epitaxy on atomically flat α-Al (0001) substrates, the surface of which was partially modified with pentacene buffer film.
		Rubrene thin films grown at room temperature on a sapphire substrate without pentacene buffer layer did not exhibit any X-ray diffraction pattern, whereas films deposited on a pentacene buffer layer exhibited peaks of c-axis orientation.
		Preliminary, p-type operation was observed in bottom-gate field effect transistors using this rubrene film deposited on a pentacene buffer.
	jjap.ipap.jp /link?JJAP/44/3740 (411 words)

	Evans Research Group - Research
		We have studied the formation of the pentacene channel and its relationship to the evolution of 2D growth of a pentacene monolayer nd proved the drain current starts to flow at a sharp threshold where the pentacene islands come into contact with each other during the initial stage of the transistor formation.
		Rubrene (C42H28) is one f the prominent organic materials because of its relatively high values of the surface carrier mobility.
		In comparison to pentacene, rubrene shows 3D growth of the circular islands even in the early stages of growth.
	xray.engr.wisc.edu /research.shtml (461 words)

	Primary photoexcitation and charge transport in molecular crystals
		From the shape of these spectra and by comparing them with each other we have been able to identify several alternate photoexcitation mechanisms in rubrene that involve different kinds of vibronic and frozen lattice transitions and different kinds of excitons.
		By comparing the onset of the photoconductivity and the photoluminescence we have been able to show that the creation of free charge carriers happens through a long lived intermediate state that is reached from the free exciton state.
		Najafov, I. Biaggio, V. Podzorov, M. Calhoun, M. Gershenson Primary Photoexcitations and the Origin of the Photocurrent in Rubrene Single Crystals, Phys.
	www.lehigh.edu /~inlo/photoexcitations.html (399 words)

	C&EN: TODAY'S HEADLINES - TOWARD BETTER, COLORFUL DEVICES
		The rubrene crystal makes intimate contact with the support through van der Waals interactions.
		Remarkably, the single-crystal rubrene transistors exhibit extremely high charge-carrier mobilities--about 10 times greater than those of the best thin-film polycrystalline transistors.
		The researchers suspect that the phenomenon arises from the unique packing of the molecules in the rubrene crystal.
	pubs.acs.org /cen/topstory/8211/8211notw1.html (539 words)

	Vitaly Podzorov
		V. Sundar, J. Zaumseil, V. Podzorov, E. Menard, R. Willett, M. Gershenson and J. Rogers “Mobility Anisotropy in Rubrene Single Crystals Probed by Monolithic Elastomeric Stamps”, Science 303, 1644 (2004).
		V. Podzorov, V. Pudalov and M. Gershenson “Field Effect Transistors on Rubrene Single Crystals with Parylene Gate Insulator” Appl.
		Podzorov, V. Pudalov and M. Gershenson “Field Effect Transistors on Rubrene Single Crystals with Parylene Gate Insulator” Appl.
	www.physics.rutgers.edu /~podzorov/index.htm (2037 words)

	Improved Carrier Transfer in Red Organic Light Emitting Diodes Doped with Rubrene
		A red organic light emitting diode doped with rubrene is constructed with the configuration of ITO/NPB/Alq
		When the doping concentration of rubrene is 6% and that of DCM is 4%, red purity of the device is improved effectively.
		The experimental phenomena are explained as the result of the improved carrier transfer from rubrene to DCM.
	stacks.iop.org /0256-307X/19/572 (253 words)

	Definition of rubrene - Merriam-Webster Online Dictionary (Site not responding. Last check: 2007-10-08)
		Learn more about "rubrene " and related topics at Britannica.com
		Find more about "rubrene " instantly with Live Search
		See a map of "rubrene " in the Visual Thesaurus
	m-w.com /dictionary/rubrene (41 words)

	ETH - PNM - Oxygen-induced traps in rubrene single crystals
		In addition to measuring the in-gap density of states as described above, we have studied the influence of external conditions on the density of bulk traps.
		We were able to intentionally induce additional traps in rubrene single crystals by oxygen exposure or X-ray irradiation and determine their density and energetic position within the band gap.
		The energetic position of oxygen-induced trap states in rubrene single crystals was thus identified at 0.27 eV above the valence band edge, as can be seen in the figure.
	www.pnm.ethz.ch /research/crystals/oxygen/index (223 words)

	LIST OF PUBLICATIONS
		Calhoun, and M. Gershenson, “Primary Photoexcitations and the Origin of the Photocurrent in Rubrene Single Crystals”, Phys.
		Rogers, “Molecular Scale Scanning Tunneling Microscopy of Single Crystals of the Organic Semiconductor Rubrene”, submitted to Adv.
		Gershenson, C. Newman, and C. Frisbie, Hydrostatic pressure dependence of charge carrier transport in single crystal rubrene devices, Appl.
	www.physics.rutgers.edu /~gersh/publications.htm (1470 words)

	L560-L562 (Site not responding. Last check: 2007-10-08)
		Highly efficient and chromatically stable white organic electroluminescence (EL) devices based on blue-emitting anthracene derivatives doped with yellow-orange-emitting 5,6,11,12-tetraphenylnaphthacene (rubrene) are described.
		The relative intensities of the blue and orange-yellow emissions could be fine tuned by varying the doping concentration of the rubrene in the host to achieve pure white emission in a simple single-emissive-layer device structure.
		A double-doped device with 9,10-di-(2-naphthyl)-anthracene (D2NA): 2.5% 9,10-di-(2-naphthyl)-2-terbutyl-anthracene (D2NBA): 0.025% rubrene as the emissive layer shows a maximum brightness of 20,100 cd/m
	jjap.ipap.jp /link?JJAP/43/L560 (254 words)

	Untitled (Site not responding. Last check: 2007-10-08)
		Role of Molecular Conformations in Rubrene Thin Film Growth
		A systematic analysis of the growth of rubrene (C
		If the structure of the free molecule differs substantially from that of the corresponding molecular structure in the bulk, the crystallization is severely hampered.
	www.ruhr-uni-bochum.de /pc1/deutsch/pub/208.htm (92 words)

	Copyright Permission - Solid State Electronics - Efficient white organic light-emitting device based on a thin layer of ... (Site not responding. Last check: 2007-10-08)
		Copyright.com is the place to go for the right to use and share content from millions of print and online information sources.
		Efficient white organic light-emitting device based on a thin layer of hole-transporting host with rubrene dopant
		A white organic light-emitting device (WOLED) in which a yellow fluorescent dye, rubrene (5,6,11,12-tetraphenylnaphthacene), is doped into a thin layer of traditional hole-transporting material NPB {4,4'-bis[N-(1-naphthyl)-N-phenylamino]biphenyl} is fabricated.
	www.copyright.com /articles/sd/7b1/00381101/article_00381101_2323.html (359 words)

	'Triplet-Triplet Absorption Spectra (Site not responding. Last check: 2007-10-08)
		Liu, D.K.K.; Faulkner, L.R. P-type delayed fluorescence from rubrene.
		Herkstroeter, W.G.; Merkel, P.B. The triplet state energies of rubrene and diphenylisobenzofuran.
		Data have been obtained by computer-assisted digitization from spectrum in cited reference.
	allen.rad.nd.edu /compilations/Tta/Tta0989.htm (199 words)

	Session UC12 - Glasses: Collective Motion.
		Photobleaching techniques have been used to measure tetracene and rubrene reorientation in polystyrene near the glass transition temperature, T_g (T_g=373K).
		Under appropriate conditions, we can selectively photobleach probe molecules in more mobile environments and observe the time required for the remaining slower-than-average probes to be redistributed into an equilibrium set of environments.
		The exchange time obtained from the reorientation measurements of the larger probe, rubrene is 200 \tau _\alpha at T_g and 50 \tau _\alpha at T_g+3K.
	flux.aps.org /meetings/YR99/CENT99/abs/S7675.html (2586 words)

	JCE 2004 (81) 1010 [Jul] Synthesis of Chemiluminescent Esters: A Combinatorial Synthesis Experiment for Organic ...
		Results from the entire class are combined, and based on the results, the students identify general structural features of an active (chemiluminescent) ester.
		In addition to rubrene, which emits the most intense light, a number of inexpensive fluorophores are suitable for this experiment including chlorophyll and anthracene.
		The laboratory exercise is suitable for introductory organic chemistry students and can be modified for more advanced students.
	jchemed.chem.wisc.edu /Journal/Issues/2004/Jul/abs1010.html (322 words)

	Glowstick Ingrediants
		The following information is provided as is and has not been tested or verified I assume no responsibility for the accuracy or the use of this information.
		Start with about 50 mg dye (BPEA, DPA or rubrene) in 10 g solvent with 50 mg CPPO and 5 mg sodium salicylate.
		Put small quantity about a teaspoon full in a small vial and add equal volume of hydrogen peroxide.
	www.jugglingwithatwist.com /glowstick_ingrediants.html (826 words)

	Organic thin-film electronics from vitreous solution-processed rubrene hypereutectics : Abstract : Nature Materials
		Organic thin-film electronics from vitreous solution-processed rubrene hypereutectics : Abstract : Nature Materials
		Organic thin-film electronics from vitreous solution-processed rubrene hypereutectics
		Electronic devices based on single crystals of organic semiconductors provide powerful means for studying intrinsic charge-transport phenomena and their fundamental electronic limits
	www.nature.com /nmat/journal/v4/n8/abs/nmat1426.html (309 words)

	18. Sensory properties of chemicals
		Dyes:- 9,10-bis(phenylethynyl)anthracene (BPEA) (yellow) [10075-85-1] Fluka 15146 9,10-diphenylanthracene (DPA) (blue) [1499-10-1] Fluka 42785 5,6,11,12-tetraphenylnaphthacene (rubrene) (red) [517-51-1] Fluka 84027 Other reagents required:- bis(2-carbopentyloxy-3,5,6-trichlorophenyl)oxalate (CPPO) [75203-51-9] Aldrich 39,325-8 bis(2-ethylhexyl)phthalate (DOP) (solvent) [117-81-7] Fluka 80032 sodium salicylate (catalyst) [54-21-7] Fluka 71945 35% hydrogen peroxide [7722-84-1] Fluka 95299 Saturate solvent with dye and CPPO.
		Start with about 50 mg dye (BPEA, DPA or rubrene) in 10 g solvent with 50 mg CPPO and 5 mg sodium salicylate.
		Put small quantity (20 drops) in a small vial and add equal volume of hydrogen peroxide.
	www.faqs.org /faqs/sci/chem-faq/part4/section-3.html (970 words)

	[No title]
		The following information is supplemental data for J. Weinberg-Wolf, L. McNeil, Shubin Liu, Christian Kloc, "Evaulation of the π-electron overlap in rubrene single crystal by Raman spectroscopy," which has been submitted to Physical Review B (Feb 2006).
		Research Group: The work presented here is done by Jennifer Weinberg-Wolf, a graduate student in the McNeil group at the University of North Carolina Department of Physics and Astronomy in collaboration with Shubin Liu of the High Performance Computing Group also at UNC.
		Sorry Mac users, there is no Chime plugin for OS X. Sort by intensity
	www.physics.unc.edu /project/mcneil/MolecularAnimations/anim.php (485 words)

	Rho To Rz And Rubrene - Cole-Parmer Catalog
		Rho To Rz And Rubrene - Cole-Parmer Catalog
		Cole-Parmer Catalog > Chemicals > Chemicals R > Rho to Rz > Rubrene
		Technical Library (roll over link for article summary)
	www.coleparmer.com /catalog/product_view.asp?sku=8813569 (51 words)

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