Efficient Visible‐Light Emission from Dye‐Doped Mesostructured Organosilica

Mizoshita, Norihiro; Goto, Yasutomo; Tani, Takao; Inagaki, Shinji

doi:10.1002/adma.200901168

Cited by 67 publications

(53 citation statements)

References 61 publications

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“…This can be ascribed to ''in situ'' silane pre-functionalization, chemical dispersion on the molecular level, completely preventable movement [ 41 ] and agglomeration of high PL SiCD 1 , [ 25 ] and the excellent protective environment of the Ormosil host. Evidently, our SiCD-Gel glass monoliths are comparably bright and processable with the previously reported best QD-silica (QY = 35%), [ 13 ] QD-clay (67%), [ 42 ] and dye-Ormosil (76%) [ 11 ] composites, all of which were only thin fi lms.…”

Section: Communicationsupporting

confidence: 54%

“…[ 3 , 4 ] Among OIHMs, sol-gel derived organically modifi ed silicate (Ormosil) glasses embedded with functional dopants have attracted particularly attention, and can be applied in various optical materials and devices. [5][6][7][8][9][10][11] Ormosil glasses are expected a better choice as host materials for mechanical stability, facile preparation technique, and molecular level uniformity of dopants. They are also better than polymer matrices, especially for application in the fi elds of photonics and optoelectronics, because of their long-term, thermal stability [ 9 ] and designable microstructures.…”

Section: Organic-inorganic Hybrid Functional Carbon Dot Gel Glassesmentioning

confidence: 99%

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Organic–Inorganic Hybrid Functional Carbon Dot Gel Glasses

2012

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Silane pre-functionalized carbon dots, arbitrarily doped (0-100% scale) carbon dot nanohybrid gel glasses and macrostructures with high luminescence (quantum yields = 47% and 88%, respectively) and broadband optical limiting properties (532 and 1064 nm) are reported. These glasses are optically, thermally, and mechanically stable, as well as highly transmissive (ca. 90%) in the 400-1350 nm region.

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Section: Communicationsupporting

confidence: 54%

Section: Organic-inorganic Hybrid Functional Carbon Dot Gel Glassesmentioning

confidence: 99%

Organic–Inorganic Hybrid Functional Carbon Dot Gel Glasses

2012

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“…11 Recently, several PMO materials with optical properties have been reported, and among them, PMO thin films show interesting potential for use as fluorescent materials. [12][13][14][15] For example, Goto et al investigated the fluorescence properties of aromatic-bridged PMO films and found that biphenyl-bridged PMO exhibited exceptionally high fluorescence quantum yield (0.45) compared with benzene-, naphthalene-, and anthracene-bridged PMO films (0.03-0.09). 12 A number of studies on biphenyl-bridged PMOs in powder form have been published.…”

Section: Introductionmentioning

confidence: 99%

Hierarchically structured biphenylene-bridged periodic mesoporous organosilica

Keilbach

Kienle

et al. 2011

J. Mater. Chem.

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Novel composites of highly ordered and stable biphenyl-bridged periodic mesoporous organosilica (PMO) materials confined within the pores of anodic alumina membranes (AAM) were successfully synthesized by evaporation-induced self-assembly (EISA). 4,4 0 -Bis(triethoxysilyl)biphenyl (BTEBP) was used as a precursor in combination with the ionic surfactant cetyltrimethylammonium bromide (CTAB) or triblock-copolymer F127 as structure-directing agents. The resulting mesophases were characterized by small angle X-ray scattering (SAXS) and transmission electron microscopy (TEM).With ionic CTAB as a structure directing agent, samples with a mixture of the 2D-hexagonal columnar and a lamellar mesophase were obtained within the AAM channels. When using the nonionic surfactant F127, mesophases with a 2D-hexagonal circular structure were formed in the AAM channels. Additionally, a cubic Im 3m phase could also be obtained with the same nonionic surfactant after the addition of lithium chloride to the precursor solution. The stability of both the circular and cubic biphenylene-bridged PMO against calcination temperatures of up to 250 C was confirmed by NMR spectroscopy. Nitrogen sorption in the porous composite membrane shows typical type IV isotherms and narrow pore size distributions. All the biphenyl PMO/AAM composites show fluorescence due to the existence of biphenyl chromophores in the stable organosilica framework.

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“…Inagaki and co-workers conducted pioneering work in which effi cient fl uorescence resonance energy transfer (FRET) was realized based on a coumarin-doped mesoporous organosilica fi lm with hybridized biphenyl groups within the framework. [ 283 ] The visible-light emission could be facilely tuned by optimizing the dye-loading amount. In addition, aggregation-induced emission (AIE) and aggregation-caused quenching (ACQ) chromophores were concurrently integrated into PMOs for effi cient multicolor emission based on the FRET ( Figure 26 ) mechanism.…”

Section: Mons For Bioimagingmentioning

confidence: 99%

Chemistry of Mesoporous Organosilica in Nanotechnology: Molecularly Organic–Inorganic Hybridization into Frameworks

2016

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Organic-inorganic hybrid materials aiming to combine the individual advantages of organic and inorganic components while overcoming their intrinsic drawbacks have shown great potential for future applications in broad fields. In particular, the integration of functional organic fragments into the framework of mesoporous silica to fabricate mesoporous organosilica materials has attracted great attention in the scientific community for decades. The development of such mesoporous organosilica materials has shifted from bulk materials to nanosized mesoporous organosilica nanoparticles (designated as MONs, in comparison with traditional mesoporous silica nanoparticles (MSNs)) and corresponding applications in nanoscience and nanotechnology. In this comprehensive review, the state-of-art progress of this important hybrid nanomaterial family is summarized, focusing on the structure/composition-performance relationship of MONs of well-defined morphology, nanostructure, and nanoparticulate dimension. The synthetic strategies and the corresponding mechanisms for the design and construction of MONs with varied morphologies, compositions, nanostructures, and functionalities are overviewed initially. Then, the following part specifically concentrates on their broad spectrum of applications in nanotechnology, mainly in nanomedicine, nanocatalysis, and nanofabrication. Finally, some critical issues, presenting challenges and the future development of MONs regarding the rational synthesis and applications in nanotechnology are summarized and discussed. It is highly expected that such a unique molecularly organic-inorganic nanohybrid family will find practical applications in nanotechnology, and promote the advances of this discipline regarding hybrid chemistry and materials.

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Efficient Visible‐Light Emission from Dye‐Doped Mesostructured Organosilica

Cited by 67 publications

References 61 publications

Organic–Inorganic Hybrid Functional Carbon Dot Gel Glasses

Organic–Inorganic Hybrid Functional Carbon Dot Gel Glasses

Hierarchically structured biphenylene-bridged periodic mesoporous organosilica

Chemistry of Mesoporous Organosilica in Nanotechnology: Molecularly Organic–Inorganic Hybridization into Frameworks

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