1999
DOI: 10.1002/(sici)1521-4095(199904)11:6<474::aid-adma474>3.0.co;2-i
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Photoluminescent Silicon Clusters in Oriented Hexagonal Mesoporous Silica Film

Abstract: ExperimentalThe ET2 monomer was prepared as previously reported [23]. PolyET2 films (4±6 mm thick) were deposited on indium-tin-oxide (ITO) plates by cyclic voltammetry (from ±0.2 to 1.2 V vs. SCE), of a 4.0´10 ±3 M ET2 solution in acetonitrile with TBAF (0.1 M) as the supporting electrolyte. The doping level of the polymer was changed by varying the oxidation potential (V ox ) within the range ±0.2 to +0.8 V in chronoamperometric experiments. For each explored potential, the chronoamperometry was run until ve… Show more

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Cited by 90 publications
(81 citation statements)
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“…It was also shown by 29 Si MAS-NMR spectroscopy that silica polymerizations continue for more than a month. Dag et al (22) have investigated the increase of the intensity ratio of the Q 4 band to the (Q 2 + Q 3 ) bands (where Q 4 is fully polymerized SiO 4 , and Q 3 and Q 2 are originated from O 3 SiOH and O 2 Si(OH) 2 partially polymerized sides, respectively) with time over 2 months. This phenomenon was assigned to further silica polymerization over time in these types of materials (22).…”
Section: Resultsmentioning
confidence: 99%
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“…It was also shown by 29 Si MAS-NMR spectroscopy that silica polymerizations continue for more than a month. Dag et al (22) have investigated the increase of the intensity ratio of the Q 4 band to the (Q 2 + Q 3 ) bands (where Q 4 is fully polymerized SiO 4 , and Q 3 and Q 2 are originated from O 3 SiOH and O 2 Si(OH) 2 partially polymerized sides, respectively) with time over 2 months. This phenomenon was assigned to further silica polymerization over time in these types of materials (22).…”
Section: Resultsmentioning
confidence: 99%
“…• C gives nanoclusters of silicon, which emit in the visible region with nanosecond lifetimes (4). Syntheses of semiconductor nanoclusters (4)(5)(6)(7)(8), metal nanoparticles (9), and polymers (10) in the internal surfaces of inorganic mesostructures and surface modifications with different organic groups are some examples of new materials of this type in the field (11)(12)(13).…”
Section: Introductionmentioning
confidence: 99%
“…[2][3][4][5][6][7][8][9][10] Mesoporous materials have regular and tunable pores with large surface areas. Modifying the surface with optical, magnetic and catalytic materials will prove beneficial in various applications.…”
Section: Introductionmentioning
confidence: 99%
“…There are many methods described in the literature for modifying the surface of mesoporous materials with active materials. Chemical vapor deposition, 6 ion-exchange 7,8 impregnation, 9,10 true liquid crystalline templating (TLCT), 11,12 functionalizing the pore walls with organic groups to incorporate various nanocrystals into the pores, 13 doping mesopores with quantum dots, 14 etc. are some examples of the methods.…”
Section: Introductionmentioning
confidence: 99%
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