The Effect of Substituents on the Fluorescent Properties ofPara-Phenylenevinylene

2007 ◽  
Vol 54 (4) ◽  
pp. 853-860 ◽  
Author(s):  
Liang Ding ◽  
Yu-Qi Ding ◽  
Qi-Wen Teng ◽  
Ke Wang
Keyword(s):  
Fluorescent Properties ◽  
Effect Of Substituents

OH- Removal and its Effect on the Fluorescent Properties of Er3+/Yb3+ Co-doped Barium Gallogermanate Glass

2009 ◽  
Vol 24 (2) ◽  
pp. 243-246 ◽  
Author(s):  
Xiao-Ping JIANG ◽  
Zhong-Min YANG ◽  
Zhou-Ming FENG
Keyword(s):  
Fluorescent Properties ◽  
Co Doped

The effects controlling the oxygen basicity in alkoxysilanes (RO)nSi(CH3)4-n. The mutual polarizability effect of alkoxy groups attached to silicon

1979 ◽  
Vol 44 (3) ◽  
pp. 750-755 ◽  
Author(s):  
Josef Pola ◽  
Marie Jakoubková ◽  
Václav Chvalovský
Keyword(s):  
Regression Analysis ◽  
Linear Regression ◽  
Electronic Effect ◽  
Linear Regression Analysis ◽  
Effect Of Substituents ◽  
Relative Basicity ◽  
Polarizability Effect ◽  
Alkoxy Groups ◽  
Individual Series

Relative basicity of the oxygen in alkoxysilanes (RO)nSi(CH3)3-n having n = 1-4 and various electrondonating and electronwithdrawing groups R measured as Δν(OH) of phenol due to its interaction with these compounds in CCl4 is shown to be chiefly controlled by the electronic effect of substituents R. Linear regression analysis of the Δν(OH) vs n relatioship for individual series (RO)nSi(CH3)4-n suggests the operation of the polarizability effect of RO groups becoming more important with increasing electronwithdrawing nature of R.

scholarly journals Layered terbium hydroxides for simultaneous drug delivery and imaging

2021 ◽  
Author(s):  
Margarita Strimaite ◽  
Clarissa Harman ◽  
Huan Duan ◽  
Yuwei Wang ◽  
Gemma-Louise Davies ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Rare Earth ◽  
Fluorescent Properties

Layered rare-earth hydroxides have begun to gather increasing attention as potential theranostic platforms owing to their extensive intercalation chemistry combined with magnetic and fluorescent properties. In this work, the potential...

scholarly journals Self-Targeting of Carbon Dots into the Cell Nucleus: Diverse Mechanisms of Toxicity in NIH/3T3 and L929 Cells

2021 ◽  
Vol 22 (11) ◽  
pp. 5608
Author(s):  
Markéta Havrdová ◽  
Iztok Urbančič ◽  
Kateřina Bartoň Tománková ◽  
Lukáš Malina ◽  
Janez Štrancar ◽  
...  
Keyword(s):  
Dna Damage ◽  
Carbon Dots ◽  
L929 Cell ◽  
Fluorescent Properties ◽  
Cell Cycle Profile ◽  
Mechanisms Of Toxicity ◽  
3T3 Fibroblasts ◽  
Nih 3T3 ◽  
Positively Charged ◽  
Endocytic Pathways

It is important to understand the nanomaterials intracellular trafficking and distribution and investigate their targeting into the nuclear area in the living cells. In our previous study, we firstly observed penetration of nonmodified positively charged carbon dots decorated with quaternary ammonium groups (QCDs) into the nucleus of mouse NIH/3T3 fibroblasts. Thus, in this work, we focused on deeper study of QCDs distribution inside two healthy mouse NIH/3T3 and L929 cell lines by fluorescence microspectroscopy and performed a comprehensive cytotoxic and DNA damage measurements. Real-time penetration of QCDs across the plasma cell membrane was recorded, concentration dependent uptake was determined and endocytic pathways were characterized. We found out that the QCDs concentration of 200 µg/mL is close to saturation and subsequently, NIH/3T3 had a different cell cycle profile, however, no significant changes in viability (not even in the case with QCDs in the nuclei) and DNA damage. In the case of L929, the presence of QCDs in the nucleus evoked a cellular death. Intranuclear environment of NIH/3T3 cells affected fluorescent properties of QCDs and evoked fluorescence blue shifts. Studying the intracellular interactions with CDs is essential for development of future applications such as DNA sensing, because CDs as DNA probes have not yet been developed.

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