Semiconducting superlattices templated by molecular assemblies

Braun, Paul V.; Osenar, Paul; Stupp, Samuel I.

doi:10.1038/380325a0

Cited by 524 publications

(336 citation statements)

References 30 publications

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“…Braun's group reported the first successful template synthesis of periodic nanostructured inorganic materials which copied directly the symmetry and dimensionality of the organic precursor. As early as in 1996, Braun described the growth of stable semiconductor-organic superlattices based on CdS and CdSe templates in the LC phase from nonionic organic amphiphilic molecules, water and precursor ions for the inorganic semiconductor [86]. They attributed the superlattice morphology of nanocomposite to a templating effect of the hexagonal mesophase.…”

Section: Nanoparticlesmentioning

confidence: 99%

Lyotropic liquid crystal directed synthesis of nanostructured materials

Wang

Chen

Jiao

2009

Science and Technology of Advanced Materials

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This review introduces and summarizes lyotropic liquid crystal (LLC) directed syntheses of nanostructured materials consisting of porous nanostructures and zero-dimensional (0-D), one-dimensional (1-D) and two-dimensional (2-D) nanostructures. After a brief introduction to the liquid crystals, the LLCs used to prepare mesoporous materials are discussed; in particular, recent advances in controlling mesostructures are summarized. The LLC templates directing the syntheses of nanoparticles, nanorods, nanowires and nanoplates are also presented. Finally, future development in this field is discussed.

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Section: Nanoparticlesmentioning

confidence: 99%

Lyotropic liquid crystal directed synthesis of nanostructured materials

Wang

Chen

Jiao

2009

Science and Technology of Advanced Materials

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“…Scholars focused on studying the nanoparticles derived from metals and inorganic semiconductors, due to their significant electrical and optical properties compared to bulk materials (Murray et al 1993;Braum et al 1996;Micic et al1995;Heath et al 1994).…”

Section: Introductionmentioning

confidence: 99%

A study of the optical band gap of zinc phthalocyanine nanoparticles using UV–Vis spectroscopy and DFT function

Hamam

Alomari

2017

Appl Nanosci

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In the present work, we used the ultravioletVisible (UV-Vis) spectroscopy technique to find the optical band gap of zinc phthalocyanine nanoparticles (ZnPc-NP) experimentally. Moreover, we used a time-dependent density functional theory (TDDFT) to simulate the UV-Vis absorption spectrum of ZnPc molecule in gas and solution phases. The ZnPc-NP absorption spectrum shows a shift toward higher energies compared to the bulk ZnPc. The simulated UV-Vis and the experimental nanoparticle's spectrum were found to have a good agreement. The ZnPc energy band gap from the DFT calculations shows how it's possible to get wider range of energy band gap for the ZnPc. The ZnPc-NP's size and shape were examined using the transmission electron microscope (TEM).

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“…A charged surfactant (CTAB or SDS) is added to both TMSwater-C n EO m [15][16][17] and TMS-C n EO m [12] mesophases to improve the metal ion uptake of the LLC phase. On the other hand, two surfactants system has the advantages of both TMS-C 12 EO 10 and TMS-water-C 12 EO 10 mesophases with an improved metal ion and water uptakes.…”

Section: Preparation and Characterization Of The [Zn(h 2 O) 6 ](No 3 mentioning

confidence: 99%

“…The TMS-water-C n EO m mesophases have been extensively demonstrated to be useful for the synthesis of mesostructured metal sulfides and metal-metal oxides [15][16][17] 26 ), with a relatively higher metal salt content, to synthesize the first example of the mesostructured metal sulfide thin films [14]. Unfortunately, the metal ion content of the TMS-C n EO m (or TMS-Pluronic) mesophase is still low to fully transfer the mesostructure of the LLCM to mesostructured metal sulfides upon H 2 S reaction [14].…”

Section: Introductionmentioning

confidence: 99%

The role of charged surfactants in the thermal and structural properties of lyotropic liquid crystalline mesophases of [Zn(H2O)6](NO3)2?CnEOm?H2O

Albayrak

Soylu

Dag

2010

Journal of Colloid and Interface Science

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a b s t r a c tThe mixtures of [Zn(H 2 O) 6 ](NO 3 ) 2 salt, 10-lauryl ether (C 12 H 25 (OCH 2 CH 2 ) 10 OH, represented as C 12 EO 10 ), a charged surfactant (cetyltrimethylammonium bromide, C 16 H 33 N(CH 3 ) 3 Br, represented as CTAB or sodium dodecylsulfate, C 12 H 25 OSO 3 Na, SDS) and water form lyotropic liquid crystalline mesophases (LLCM). This assembly accommodates up to 8.0 Zn(II) ions (corresponds to about 80% w/w salt/(salt + C 12 EO 10 )) for each C 12 EO 10 in the presence of a 1.0 CTAB (or 0.5 SDS) and 3.5 H 2 O in its LC phase. The salt concentration can be increased by increasing charged surfactant concentration of the media. Addition of charged surfactant to the [Zn(H 2 O) 6 ](NO 3 ) 2 -C 12 EO 10 mesophase not only increases the salt content, it can also increase the water content of the media. The charged surfactant-C 12 EO 10 (hydrophobic tail groups) and the surfactant (head groups)-salt ion (ion-pair, hydrogen-bonding) interactions stabilize the mesophases at such salt high and water concentrations. The presence of both Br À and NO

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Semiconducting superlattices templated by molecular assemblies

Cited by 524 publications

References 30 publications

Lyotropic liquid crystal directed synthesis of nanostructured materials

Lyotropic liquid crystal directed synthesis of nanostructured materials

A study of the optical band gap of zinc phthalocyanine nanoparticles using UV–Vis spectroscopy and DFT function

The role of charged surfactants in the thermal and structural properties of lyotropic liquid crystalline mesophases of [Zn(H2O)6](NO3)2?CnEOm?H2O

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