Enhanced fluorescence of phthalimide compounds induced by the incorporation of electron-donating alicyclic amino groups

2018 ◽  
Vol 20 (23) ◽  
pp. 16033-16044 ◽  
Author(s):  
Ryoji Orita ◽  
Marius Franckevičius ◽  
Aurimas Vyšniauskas ◽  
Vidmantas Gulbinas ◽  
Haruki Sugiyama ◽  
...  
Keyword(s):  
Fluorescence Properties ◽  
Amino Groups ◽  
Enhanced Fluorescence ◽  
Significant Difference ◽  
Phthalimide Compounds

A significant difference in fluorescence properties between 3- and 4-substituted phthalimides demonstrates the formation of excited TICT and planar ICT states, respectively.

Thermally Induced Structural Transition of Peptide Nanofibers into Nanoparticles with Enhanced Fluorescence Properties

ChemPlusChem ◽  
2020 ◽  
Vol 85 (7) ◽  
pp. 1523-1528
Author(s):  
Qing Li ◽  
Xin Yang ◽  
Liwei Zhang ◽  
Yuefei Wang ◽  
Jia Kong ◽  
...  
Keyword(s):  
Structural Transition ◽  
Fluorescence Properties ◽  
Enhanced Fluorescence ◽  
Thermally Induced ◽  
Peptide Nanofibers

The enhanced fluorescence properties & colloid stability of aqueous CdSe/ZnS QDs modified with N-alkylated poly(ethyleneimine)

2015 ◽  
Vol 39 (6) ◽  
pp. 4334-4342 ◽  
Author(s):  
Huanjie Tang ◽  
Changhua Zhou ◽  
Ruili Wu ◽  
Mao Mao ◽  
Huaibin Shen ◽  
...  
Keyword(s):  
Colloidal Stability ◽  
Fluorescence Properties ◽  
Colloid Stability ◽  
Enhanced Fluorescence ◽  
Pl Intensity

Amino-functionalized hydrophilic QDs insulated with PEI(n)Cs had enhanced PL intensity and colloidal stability compared to those of PEI-QDs.

Correction formula for carbamylated haemoglobin in diabetic uraemic patients

2001 ◽  
Vol 38 (2) ◽  
pp. 115-119 ◽  
Author(s):  
A M A Hammouda ◽  
G E Mady
Keyword(s):  
Renal Failure ◽  
Chronic Renal Failure ◽  
Free Amino ◽  
Urea Concentration ◽  
Diabetic Patients ◽  
Amino Groups ◽  
Correction Formula ◽  
Significant Difference ◽  
And Control

The measurement of carbamylated haemoglobin is a useful indicator of uraemic state during the preceding few weeks in patients with renal failure. In diabetic uraemic patients with hyperglycaemia, glycation of haemoglobin may interfere with its carbamylation, as both reactions involve the free amino groups of the protein. The aim of this study was to investigate the carbamylation of haemoglobin in the presence of hyperglycaemia. The study included 29 patients with chronic renal failure on regular haemodialysis, 14 diabetic and 15 non-diabetic patients, and 10 healthy controls. We found a significant correlation between the degree of haemoglobin carbamylation and mean blood urea concentration in both uraemic and control subjects. Carbamylation of haemoglobin was higher in both diabetic and non-diabetic chronic renal failure patients, but there were no significant differences between the groups regarding mean blood urea concentration or level of haemoglobin carbamylation. Carbamylated haemoglobin per unit of blood urea concentration was lower in the diabetic patients. Using a correction formula to account for the degree of haemoglobin glycation, there was no longer a significant difference in carbamylation per unit of blood urea concentration. In vitro incubation of red blood cells from six healthy and six diabetic non-uraemic patients in 70mmol/L urea showed a significantly lower carbamylation in the diabetic patients, but there was no significant difference when using corrected carbamylated haemoglobin values. We conclude that glycation of haemoglobin affects its carbamylation and that monitoring of uraemia in a diabetic patient necessitates the use of carbamylated haemoglobin value corrected for the degree of glycation.

Enhanced Fluorescence Properties of Poly(phenylene ethynylene)-Conjugated Polyelectrolytes Designed to Avoid Aggregation

2014 ◽  
Vol 3 (5) ◽  
pp. 405-409 ◽  
Author(s):  
Jan-Moritz Koenen ◽  
Xuzhi Zhu ◽  
Zhenxing Pan ◽  
Fude Feng ◽  
Jie Yang ◽  
...  
Keyword(s):  
Fluorescence Properties ◽  
Phenylene Ethynylene ◽  
Conjugated Polyelectrolytes ◽  
Enhanced Fluorescence

Highly selective and sensitive biosensing of dopamine based on glutathione coated silver nanoclusters enhanced fluorescence

2017 ◽  
Vol 41 (24) ◽  
pp. 15244-15250 ◽  
Author(s):  
Ramar Rajamanikandan ◽  
Malaichamy Ilanchelian
Keyword(s):  
Hydrogen Bonding ◽  
Emission Intensity ◽  
Silver Nanoclusters ◽  
Carboxyl Groups ◽  
Hydrogen Bonding Interaction ◽  
Amino Groups ◽  
Enhanced Fluorescence ◽  
Bonding Interaction

The emission intensity of red emissive GSH-AgNCs is notably enhanced after the addition of dopamine. The increasing emission intensity is attributed to the hydrogen bonding interaction between the carboxyl groups of GSH-AgNCs and amino groups of dopamine.

scholarly journals Synthesis and Fluorescent Properties of Novel Mono- and Di-Substituted 1,8-Naphthalimide Derivatives at the C-4 Position

2017 ◽  
Author(s):  
Ying Fu ◽  
Xiao-Xiao Pang ◽  
Kui Wang ◽  
Zhi-Qiang Wang ◽  
Guan-Yu Li ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Chain Structure ◽  
Fluorescence Properties ◽  
Stacking Interactions ◽  
Fluorescent Properties ◽  
Enhanced Fluorescence ◽  
Pi Stacking ◽  
Molecular Core ◽  
Long Chain

A series of novel N-n-butyl-1,8-naphthalimide derivatives were synthesized via a three-step reaction involving nucleophilic substitution and acylation. All of the compounds were characterized by IR, 1H NMR, 13C NMR, MS, and elemental analysis, and the crystal structure of N-n-butyl-4-[N’,N’-bis(2`,4`-dichlorobenzoyl)ethylamino]-1,8-naphthalimide was determined. The π-π stacking interactions and hydrogen bonds between the two molecular core planes (naphthalimide ring) and the van der Waals forces between the flexible n-butyl groups resulted in a 3D long-chain structure. The UV-vis and fluorescence properties of the title compounds were investigated. The results indicated that the monosubstituted 1,8-naphthalimide derivatives bearing an electron-donating group on the benzene ring or a structure with a larger conjugative effect exhibited enhanced fluorescence properties.

Substituent enhanced fluorescence properties of star α-cyanostilbenes and their application in bioimaging

2019 ◽  
Vol 7 (39) ◽  
pp. 6010-6023 ◽  
Author(s):  
A. Gopinath ◽  
N. Manivannan ◽  
Sudip Mandal ◽  
N. Mathivanan ◽  
A. Sultan Nasar
Keyword(s):  
Cell Imaging ◽  
Fluorescence Properties ◽  
Imaging Studies ◽  
Nuclear Movement ◽  
Enhanced Fluorescence

In this paper, we report the fluorescence properties of new star α-cyanostilbene molecules. Fungus cell imaging studies using one of the molecules allowed observing nuclear movement in the live mycelium.

scholarly journals Enhanced fluorescence properties of terbium complex/poly-l-lactic acid superfine fibers sensitized by the LSPR effect of silver nanoparticles

RSC Advances ◽  
2017 ◽  
Vol 7 (32) ◽  
pp. 19808-19814 ◽  
Author(s):  
Shipeng Wen ◽  
Guiming Zhang ◽  
Rong Zhang ◽  
Liqun Zhang ◽  
Li Liu
Keyword(s):  
Silver Nanoparticles ◽  
Lactic Acid ◽  
Quantum Efficiency ◽  
Fluorescence Intensity ◽  
Fluorescence Properties ◽  
Composite Fibers ◽  
Enhanced Fluorescence ◽  
Terbium Complex ◽  
Ag Nps ◽  
Lspr Effect

Due to the LSPR effect of Ag-NPs, the fluorescence intensity, quantum efficiency of Tb-complex in the composite fibers were improved.

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