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  • 1
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    Polymer replicas of photonic porous silicon for sensing and drug delivery applications (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-03-29
    Description: Elaborate one-dimensional photonic crystals are constructed from a variety of organic and biopolymers, which can be dissolved or melted, by templating the solution-cast or injection-molded materials in porous silicon or porous silicon dioxide multilayer (rugate dielectric mirror) structures. After the removal of the template by chemical dissolution, the polymer castings replicate the photonic features and the nanostructure of the master. We demonstrate that these castings can be used as vapor sensors, as deformable and tunable optical filters, and as self-reporting, bioresorbable materials.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Yang Yang -- Cunin, Frederique -- Link, Jamie R -- Gao, Ting -- Betts, Ronald E -- Reiver, Sarah H -- Chin, Vicki -- Bhatia, Sangeeta N -- Sailor, Michael J -- New York, N.Y. -- Science. 2003 Mar 28;299(5615):2045-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Department 0358, La Jolla, CA 92093-0358, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12663921" target="_blank"〉PubMed〈/a〉
    Keywords: *Biocompatible Materials ; Caffeine ; *Drug Delivery Systems ; Ethanol ; Humans ; Hydrogen-Ion Concentration ; Hydrolysis ; Light ; *Nanotechnology ; Optics and Photonics ; Oxidation-Reduction ; Polyesters/chemistry ; Polyethylene/chemistry ; *Polymers ; Polystyrenes/chemistry ; Porosity ; *Silicon/chemistry ; Silicon Dioxide/chemistry ; Spectrum Analysis ; Volatilization
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
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    Luminescent color image generation on porous silicon (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-06-26
    Description: Black and white images were projected onto n-type silicon (100) wafers during a photoelectrochemical etch to produce a color image that photoluminesces. The photoluminescence originates from a thin layer of luminescent porous silicon that is produced in the photoetch, and the colors that appear in the etched image arise from thin-film optical interference. A diffraction grating was also photoetched into the substrate, demonstrating simultaneous encoding of a gray-scale image into thin-film interference, luminescence, and diffraction phenomena.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Doan, V V -- Sailor, M J -- New York, N.Y. -- Science. 1992 Jun 26;256(5065):1791-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17743033" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    Thin Films of n-Si/Poly-(CH3)3Si-Cyclooctatetraene: Conducting-Polymer Solar Cells and Layered Structures (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-09-07
    Description: The optical and electronic properties of thin films of the solution-processible polymer poly-(CH(3))(3)Si-cyclooctatetraene are presented. This conjugated polymer is based on a polyacetylene backbone with (CH(3))(3)Si side groups. Thin transparent films have been cast onto n-doped silicon (n-Si) substrates and doped with iodine to form surfacebarrier solar cells. The devices produce photovoltages that are at the theoretical limit and that are much greater than can be obtained from n-Si contacts with conventional metals. Two methods for forming layered polymeric materials, one involving the spincoating of preformed polymers and the other comprising the sequential polymerization of different monomers, are also described. An organic polymer analog of a metal/insulator/metal capacitor has been constructed with the latter method.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sailor, M J -- Ginsburg, E J -- Gorman, C B -- Kumar, A -- Grubbs, R H -- Lewis, N S -- New York, N.Y. -- Science. 1990 Sep 7;249(4973):1146-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17831984" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Luminescent colloidal silicon suspensions from porous silicon (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-01-03
    Description: A procedure for generating colloidal suspensions of Si that exhibit luminescence, attributed to quantum confinement effects, is described. Samples of n- or p-type Si that have been electrochemically etched to form porous Si can be ultrasonically dispersed into methylene chloride, acetonitrile, methanol, toluene, or water solvents, forming a suspension of fine Si particles that luminesce. Transmission electron microscopy analyses show that the Si particles have irregular shapes, with diameters ranging from many micrometers to nanometers. Luminescent, composite polystyrene/Si films can be made by the addition of polystyrene to a toluene suspension of the Si nanoparticles and casting of the resulting solution onto a glass slide.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Heinrich, J L -- Curtis, C L -- Credo, G M -- Sailor, M J -- Kavanagh, K L -- New York, N.Y. -- Science. 1992 Jan 3;255(5040):66-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17739915" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Analysis of the published calorimetric evidence for electrochemical fusion of deuterium in palladium (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-11-10
    Description: Estimates are given of the raw data that are the basis for the claims of excess power production by the electrochemical charging of palladium in deuterium oxide (D(2)O). Calorimetric results are also presented that show no anomalous power production in either 0.1M LiOD/D(2)O or 0.1M LiOH/H(2)O (LiOH is lithium hydroxide). Several possible sources of error in open-system calorimetry are discussed that can confound interpretation of temperature changes in terms of anomalous power production.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miskelly, G M -- Heben, M J -- Kumar, A -- Penner, R M -- Sailor, M J -- Lewis, N S -- New York, N.Y. -- Science. 1989 Nov 10;246(4931):793-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17748706" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    A porous silicon-based optical interferometric biosensor (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-11-05
    Description: A biosensor has been developed based on induced wavelength shifts in the Fabry-Perot fringes in the visible-light reflection spectrum of appropriately derivatized thin films of porous silicon semiconductors. Binding of molecules induced changes in the refractive index of the porous silicon. The validity and sensitivity of the system are demonstrated for small organic molecules (biotin and digoxigenin), 16-nucleotide DNA oligomers, and proteins (streptavidin and antibodies) at pico- and femtomolar analyte concentrations. The sensor is also highly effective for detecting single and multilayered molecular assemblies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lin, V S -- Motesharei, K -- Dancil, K P -- Sailor, M J -- Ghadiri, M R -- 2SO6 GM47165-06/GM/NIGMS NIH HHS/ -- GM18309/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1997 Oct 31;278(5339):840-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9346478" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biosensing Techniques ; Biotinylation ; DNA, Complementary/analysis ; Digoxigenin ; *Interferometry ; Mice ; Sensitivity and Specificity ; *Silicon ; Streptavidin
    Print ISSN: 0036-8075
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  • 7
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    Chemical modification of the photoluminescence quenching of porous silicon (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-09-17
    Description: The photoluminescence of porous silicon can be quenched by adsorbates, and the degree of quenching can be tuned by chemical derivatization of the porous silicon surface. Thus, as-prepared porous silicon has a hydrophobic, hydrogen-terminated surface, and the photoluminescence is strongly quenched by ethanol and weakly quenched by water. Mild chemical oxidation (iodine followed by hydrolysis) produces a hydrophilic porous silicon surface. Photoluminescence from this hydrophilic material is quenched to a lesser extent by ethanol and to a greater extent by water, relative to the original surface. This demonstrates that the visible luminescence from porous silicon is highly surface-sensitive, and the surface interactions can be tuned by specific chemical transformations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lauerhaas, J M -- Sailor, M J -- New York, N.Y. -- Science. 1993 Sep 17;261(5128):1567-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17798116" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    Fabrication of conducting polymer interconnects (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-12-24
    Description: A nonmechanical approach to the construction of complex three-dimensional interconnect arrays has been developed with the use of conducting polymer dendrites. Electrically independent connections between pairs of wires in an array were successfully grown through alternating-current electrochemical polymerization of poly(3-methylthiophene), without mechanical or optical masking steps. The electrically active links were insulated by subsequent electropolymerization of 4-vinylpyridine or 2-methylthiophene or by the dip-coating of the connections in a polystyrene solution.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Curtis, C L -- Ritchie, J E -- Sailor, M J -- New York, N.Y. -- Science. 1993 Dec 24;262(5142):2014-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17794966" target="_blank"〉PubMed〈/a〉
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
    Electronic Resource
    Electronic Resource
    Vibrational frequencies associated with the carbide ligand in iron butterfly clusters (1987)
    s.l. : American Chemical Society
    Inorganic chemistry 26 (1987), S. 2950-2954 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00265a007
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  • 10
    Electronic Resource
    Electronic Resource
    Alkylation reactions of the CCO ligand in triruthenium carbonyl clusters. Synthesis and x-ray crystal structure of Ru3(CO)9(.mu.3-CO)[.mu.3-C:C(OCH3)CH3] (1987)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 109 (1987), S. 6015-6022 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00254a021
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