Evidence for the role of organic layers in photoconductivity of organic/inorganic hybrid nanosheets as prepared by Langmuir–Blodgett methods

2005 ◽  
pp. 1999-2001 ◽  
Author(s):  
Kazuko Saruwatari ◽  
Hisako Sato ◽  
Jun Kameda ◽  
Akihiko Yamagishi ◽  
Kazunari Domen
Keyword(s):  
Inorganic Hybrid ◽  
Organic Layers ◽  
Langmuir Blodgett

scholarly journals Occurrence of drug target residues within decantation tank sediments: a good clue to assess their historical excretion?

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Thomas Thiebault ◽  
Laëtitia Fougère ◽  
Anaëlle Simonneau ◽  
Emilie Destandau ◽  
Claude Le Milbeau ◽  
...  
Keyword(s):  
Drug Target ◽  
Chemical Properties ◽  
Deposition Process ◽  
Drug Consumption ◽  
Organic Layers ◽  
Sewer Systems ◽  
Physico Chemical ◽  
Deep Underground ◽  
Deposition Processes

AbstractThis study investigated the potential of sediments accumulated in sewer systems to record human activities through the occurrence of drug target residues (DTR). The installation studied is 17 m deep underground decantation tank that traps the coarse fractions of a unitary sewer system (northern part of Orléans, France), collecting both stormwater and wastewater. The sediments deposited in this tank could constitute a nonesuch opportunity to study the historical evolution of illicit and licit drug consumption in the catchment, however, the deposition processes and the record of DTRs remain largely unknown at present. Five cores were acquired from 2015 to 2017. One hundred fifty-two sediment samples were extracted using a mixture of ultra-pure water:methanol (1:1) prior to analysis of the extracts by high-pressure liquid chromatography coupled to tandem mass spectrometry. Several classical sedimentological analyses such as total organic carbon, facies description and granulometry were also performed on these samples, in order to understand the most important factors (e.g., physico-chemical properties of the DTRs, solid type, assumed load in wastewater) impacting their deposition.The key role of the speciation of DTRs was highlighted by the higher contents in neutral and anionic DTRs in organic layers, whereas only cationic DTRs were found in mineral layers. The considerable modifications in the sediments’ properties, generated by distinct origins (i.e., stormwater or wastewater), are therefore the most important drivers that must be taken into account when back-calculating the historical patterns of drug consumption from their DTR concentrations in decantation tank sediments. Further research remains necessary to fully understand the deposition process, but this study provides new clues explaining these temporal evolutions.

Electronic Control of Diffusion Through Langmuir-Blodgett Film Membranes

1994 ◽  
Vol 208 (3) ◽  
pp. 185-187 ◽  
Author(s):  
T J Mayer ◽  
D J Clark ◽  
P O Byrne ◽  
M C Petty
Keyword(s):  
Electric Field ◽  
Preliminary Investigation ◽  
Composite Membranes ◽  
Electronic Control ◽  
Blodgett Film ◽  
Organic Layers ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films ◽  
Langmuir Blodgett Film

A preliminary investigation is reported into the diffusion of a quinine derivative through composite membranes obtained by the deposition of phospholipid Langmuir-Blodgett films on to porous nylon supports. The results suggest that the thin organic layers probably collapse into the pores in the membrane rather than bridge them. It is found that the diffusion of the drug can be influenced by the application of an electric field.

scholarly journals Role of microenvironment in the mixed Langmuir–Blodgett films

2006 ◽  
Vol 299 (2) ◽  
pp. 785-790 ◽  
Author(s):  
S.A. Hussain ◽  
P.K. Paul ◽  
D. Bhattacharjee
Keyword(s):  
Langmuir Blodgett ◽  
Langmuir Blodgett Films

scholarly journals Static and dynamic electronic characterization of organic monolayers grafted on a silicon surface

2016 ◽  
Vol 18 (5) ◽  
pp. 3675-3684 ◽  
Author(s):  
O. Pluchery ◽  
Y. Zhang ◽  
R. Benbalagh ◽  
L. Caillard ◽  
J. J. Gallet ◽  
...  
Keyword(s):  
Silicon Surface ◽  
Organic Monolayers ◽  
Inorganic Hybrid ◽  
Organic Layers ◽  
Nanoelectronic Devices ◽  
The Way

Organic layers chemically grafted on silicon offer excellent interfaces that may open up the way for new organic–inorganic hybrid nanoelectronic devices.

Amphiphilic Organic-Inorganic Hybrid Zeotype Aluminosilicate like a Nanoporous Crystallized Langmuir-Blodgett Film

2015 ◽  
Vol 127 (27) ◽  
pp. 8105-8109
Author(s):  
Takuji Ikeda ◽  
Norihito Hiyoshi ◽  
Shun-ichi Matsuura ◽  
Tetsuya Kodaira ◽  
Takuma Nakaoka ◽  
...  
Keyword(s):  
Blodgett Film ◽  
Inorganic Hybrid ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Film

The reduction of organic-layer depth by wildfire in the North American boreal forest and its effect on tree recruitment by seed

2007 ◽  
Vol 37 (6) ◽  
pp. 1012-1023 ◽  
Author(s):  
David F. Greene ◽  
S. Ellen Macdonald ◽  
Sybille Haeussler ◽  
Susy Domenicano ◽  
Josée Noël ◽  
...  
Keyword(s):  
Boreal Forest ◽  
Inverse Function ◽  
Organic Layer ◽  
Layer Depth ◽  
Tree Recruitment ◽  
Organic Layers ◽  
Boreal Region ◽  
The North ◽  
Forest Species Composition

We compared prefire and postfire organic-layer depths in boreal forest types (14 fires) across Canada, and examined tree recruitment as a function of depth. There was extensive within-stand variation in depth, much of it due to clustering of thinner organic layers around boles. There were no significant differences in postfire organic-layer depth among sites with different prefire forest species composition, but sites in the eastern boreal region had thicker postfire organic layers than those in the western boreal region. Mean organic-layer depth was much greater in intact stands than after fires; overall, fire reduced organic-layer depth by 60%, largely because of increases in the area of thin (<3 cm) organic layers (1% in intact stands vs. 40% in postfire stands). There was more variation in organic-layer depth within postfire than within prefire stands; notably, some areas in postfire stands were deeply combusted, while adjacent parts were only lightly combusted. We speculate that the diminished role of energy loss to latent heat around tree boles increased organic-layer consumption around tree boles. Seedlings were clustered around burned tree bases, where organic layers were thinner, and the dependence of a species on thin organic layers was an inverse function of seed size.

Amphiphilic Organic-Inorganic Hybrid Zeotype Aluminosilicate like a Nanoporous Crystallized Langmuir-Blodgett Film

2015 ◽  
Vol 54 (27) ◽  
pp. 7994-7998 ◽  
Author(s):  
Takuji Ikeda ◽  
Norihito Hiyoshi ◽  
Shun-ichi Matsuura ◽  
Tetsuya Kodaira ◽  
Takuma Nakaoka ◽  
...  
Keyword(s):  
Blodgett Film ◽  
Inorganic Hybrid ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Film
Sign in / Sign up

Export Citation Format

Share Document