scholarly journals Controlling Localization and Excretion of Nanoparticles by Click Modification of the Surface Chemical Structures inside Living Cells

ChemPlusChem ◽  
2015 ◽  
Vol 80 (5) ◽  
pp. 796-799
Author(s):  
Takeo Ito ◽  
Takuma Nakamura ◽  
Eriko Kusaka ◽  
Ryohsuke Kurihara ◽  
Kazuhito Tanabe
Keyword(s):  
Living Cells ◽  
Surface Chemical ◽  
Chemical Structures ◽  
Modification Of The Surface

scholarly journals Controlling Localization and Excretion of Nanoparticles by Click Modification of the Surface Chemical Structures inside Living Cells

ChemPlusChem ◽  
2015 ◽  
Vol 80 (5) ◽  
pp. 772-772
Author(s):  
Takeo Ito ◽  
Takuma Nakamura ◽  
Eriko Kusaka ◽  
Ryohsuke Kurihara ◽  
Kazuhito Tanabe
Keyword(s):  
Living Cells ◽  
Surface Chemical ◽  
Chemical Structures ◽  
Modification Of The Surface

Light Controlled Photoluminescence Relaxation in Porous Silicon

1994 ◽  
Vol 358 ◽  
Author(s):  
R. Czaputa ◽  
R. Fritzl ◽  
A. Popitsch
Keyword(s):  
Porous Silicon ◽  
Chemical Structure ◽  
Room Temperature ◽  
Relaxation Effect ◽  
Ambient Atmosphere ◽  
Surface Chemical ◽  
Dangling Bond ◽  
Nanoporous Silicon ◽  
Pl Intensity ◽  
Modification Of The Surface

ABSTRACTWe report results of photoluminescence (PL), FTIR and ESR investigations on nanoporous silicon (PS) where a reversible PL intensity relaxation effect in the chemically oxidised material is observed. To be activated the effect needs, however, additional preparation steps including light irradiation and ageing in ambient atmosphere. After illumination with visible light, the PL intensity is remarkably diminished. However it recovers in the dark within the time scale of minutes to hours under ambient atmosphere at room temperature. This cycle can be repeated several times. We show that the variation of the PL intensity is anticorrelated to an ESR signal attributed to silicon dangling bonds. From the IR spectrum, however, no significant change of the pore surface chemical structure can be observed during a cycle. Therefore we conclude that the variation of the PL intensity is rather controlled by a metastable change in the number of dangling bond centers than by modification of the surface chemistry in the porous silicon system.

Surface chemical structures of vanadium pentoxide-phosphorus pentoxide catalysts

1988 ◽  
Vol 92 (8) ◽  
pp. 2275-2282 ◽  
Author(s):  
Atsushi Satsuma ◽  
Atsushi Hattori ◽  
Akio Furuta ◽  
Akira Miyamoto ◽  
Tadashi Hattori ◽  
...  
Keyword(s):  
Vanadium Pentoxide ◽  
Phosphorus Pentoxide ◽  
Surface Chemical ◽  
Chemical Structures

Correlation of pretilt angles and surface chemical structures of polyimide alignment films after direct fluorination

2010 ◽  
Vol 59 (12) ◽  
pp. 1622-1629 ◽  
Author(s):  
Xu Wang ◽  
Shengliang Chen ◽  
Yijun Yang ◽  
Yi Chen ◽  
Ming Li ◽  
...  
Keyword(s):  
Surface Chemical ◽  
Chemical Structures ◽  
Direct Fluorination ◽  
Pretilt Angles

Modulation of Surface Charge by Mediating Surface Chemical Structures in Nonpolar Solvents with Nonionic Surfactant Used as Charge Additives

2021 ◽  
Vol 125 (35) ◽  
pp. 19525-19536
Author(s):  
Zhixiang Chen ◽  
Yi Lu ◽  
Mahsa Nazemi Ashani ◽  
Rogerio Manica ◽  
Liyuan Feng ◽  
...  
Keyword(s):  
Surface Charge ◽  
Nonionic Surfactant ◽  
Surface Chemical ◽  
Chemical Structures ◽  
Nonpolar Solvents

ChemInform Abstract: Surface Chemical Structures of V2O5-P2O5 Catalysts

ChemInform ◽  
1988 ◽  
Vol 19 (28) ◽  
Author(s):  
A. SATSUMA ◽  
A. HATTORI ◽  
A. FURUTA ◽  
A. MIYAMOTO ◽  
T. HATTORI ◽  
...  
Keyword(s):  
Surface Chemical ◽  
Chemical Structures

Effects of Electrical Discharges in Low Pressure Gases on the Morphology of Polyethylene Crystals

1974 ◽  
Vol 32 ◽  
pp. 544-545
Author(s):  
L.H. Bolz ◽  
D.H. Reneker
Keyword(s):  
Power Distribution ◽  
Electrical Discharge ◽  
Dielectric Breakdown ◽  
Ionic Species ◽  
Low Pressure ◽  
Polymer Surfaces ◽  
Electrical Discharges ◽  
Adhesive Bonds ◽  
Power Distribution Lines ◽  
Modification Of The Surface

The attack, on the surface of a polymer, by the atomic, molecular and ionic species that are created in a low pressure electrical discharge in a gas is interesting because: 1) significant interior morphological features may be revealed, 2) dielectric breakdown of polymeric insulation on high voltage power distribution lines involves the attack on the polymer of such species created in a corona discharge, 3) adhesive bonds formed between polymer surfaces subjected to such SDecies are much stronger than bonds between untreated surfaces, 4) the chemical modification of the surface creates a reactive surface to which a thin layer of another polymer may be bonded by glow discharge polymerization.

Fluorescence ratio imaging of dynamic intracellular ionic signals

1988 ◽  
Vol 46 ◽  
pp. 42-43
Author(s):  
R. Y. Tsien ◽  
A. Minta ◽  
M. Poenie ◽  
J.P.Y. Kao ◽  
A. Harootunian
Keyword(s):  
Binding Sites ◽  
Living Cells ◽  
Molecular Engineering ◽  
Ph Indicators ◽  
Highly Sensitive ◽  
Fluorescence Ratio Imaging ◽  
Ratio Imaging ◽  
Technical Advances ◽  
Indicator Dyes ◽  
Fluorescein Dyes

Recent technical advances now enable the continuous imaging of important ionic signals inside individual living cells with micron spatial resolution and subsecond time resolution. This methodology relies on the molecular engineering of indicator dyes whose fluorescence is strong and highly sensitive to ions such as Ca2+, H+, or Na+, or Mg2+. The Ca2+ indicators, exemplified by fura-2 and indo-1, derive their high affinity (Kd near 200 nM) and selectivity for Ca2+ to a versatile tetracarboxylate binding site3 modeled on and isosteric with the well known chelator EGTA. The most commonly used pH indicators are fluorescein dyes (such as BCECF) modified to adjust their pKa's and improve their retention inside cells. Na+ indicators are crown ethers with cavity sizes chosen to select Na+ over K+: Mg2+ indicators use tricarboxylate binding sites truncated from those of the Ca2+ chelators, resulting in a more compact arrangement of carboxylates to suit the smaller ion.

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