Intense Room-Temperature Phosphorescence of 1-Bromonaphthalene in Organized Media of Beta-Cyclodextrin and Triton X-100

1996 ◽  
Vol 50 (10) ◽  
pp. 1273-1276 ◽  
Author(s):  
Xin-Zhen Du ◽  
Yong Zhang ◽  
Xian-Zhi Huang ◽  
Yun-Bao Jiang ◽  
Yao-Qun Li ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ternary Complex ◽  
Room Temperature ◽  
Guest Molecule ◽  
Head Group ◽  
Polar Head Group ◽  
Room Temperature Phosphorescence ◽  
Beta Cyclodextrin ◽  
Organized Media ◽  
Triton X

In aerated aqueous solution, intense room-temperature phosphorescence (RTP) of 1-bromonaphthalene (1-BrN) is observed with an host–guest inclusion complex composed of Triton X-100, 1-BrN, and beta-cyclodextrin (β-CD). Triton X-100 is incorporated into the hydrophobic cavity of β-CD as the second guest molecule, and a 1:1:1 ternary complex is formed. This complex, with a polar head group, can be well distributed in aqueous solution, and stable RTP is obtained. Ethanol further enhances the RTP of the ternary complex, whereas 1-propanol and 1-butanol greatly attenuate RTP. Spectral analyses indicate that 1-BrN in the β-CD cavity is replaced by 1-propanol and 1-butanol.

scholarly journals Self-assembly induced luminescence of Eu3+-complexes and application in bioimaging

2021 ◽  
Author(s):  
Ping-Ru Su ◽  
Tao Wang ◽  
Pan-Pan Zhou ◽  
Xiao-Xi Yang ◽  
Xiao-Xia Feng ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Rare Earth ◽  
Luminescence Intensity ◽  
Self Assembly ◽  
Room Temperature ◽  
Molecular Motion ◽  
Proof Of Concept ◽  
Room Temperature Phosphorescence ◽  
New Strategy ◽  
Size Controlled

Abstract Design and engineering of highly efficient emitting materials with assembly-induced luminescence, such as room temperature phosphorescence (RTP) and aggregation-induced emission (AIE), have stimulated extensive efforts. Here, we propose a new strategy to obtain size-controlled Eu3+-complex nanoparticles (Eu-NPs) with self-assembly induced luminescence (SAIL) characteristics without encapsulation or hybridization. Compared with previous RTP or AIE materials, the SAIL phenomena of increased luminescence intensity and lifetime in aqueous solution for the proposed Eu-NPs are due to the combined effect of self-assembly in confining the molecular motion and shielding the water quenching. As a proof of concept, we also show that this system can be further applied in bioimaging, temperature measurement and HClO sensing. The SAIL activity of the rare-earth (RE) system proposed here offers a further step forward on the roadmap for the development of RE light conversion systems and their integration in bioimaging and therapy applications.

Spectroscopic Study of the Ternary Complex of Beta-Cyclodextrin, Pyrene, and Triton X-100

1993 ◽  
Vol 47 (12) ◽  
pp. 2129-2134 ◽  
Author(s):  
Elizabeth A. Cummings ◽  
Thilivhali T. Ndou ◽  
Vonda K. Smith ◽  
Isiah M. Warner
Keyword(s):  
Critical Micelle Concentration ◽  
Spectroscopic Study ◽  
Nonionic Surfactant ◽  
Fluorescence Intensity ◽  
Ternary Complex ◽  
Beta Cyclodextrin ◽  
Mixed Solutions ◽  
Ternary Complexation ◽  
Triton X ◽  
Subsequent Incorporation

The increased fluorescence intensity of pyrene due to indirect excitation by the nonionic surfactant Triton X-100 is discussed. Sensitization is quantitatively shown to occur in mixed solutions of pyrene, Triton X-100, and β-cyclodextrin (β-CD). A ternary complex is formed below the critical micelle concentration (CMC). Above the CMC, pyrene is displaced from the β-CD cavity. This is accompanied by a subsequent incorporation of pyrene into the interior of the micelle. Evidence is given that ternary complexation occurs among pyrene, CD, and TX-100.

The inhibitory effects of polyoxyethylene detergents on human erythrocyte acetylcholinesterase and Ca2+ + Mg2+ ATPase

1989 ◽  
Vol 67 (2-3) ◽  
pp. 137-146 ◽  
Author(s):  
R. Blaine Moore ◽  
J. F. Manery ◽  
J. Still ◽  
V. N. Mankad
Keyword(s):  
Human Erythrocyte ◽  
Acetylcholinesterase Activity ◽  
Significant Inhibition ◽  
Erythrocyte Membranes ◽  
Head Group ◽  
Polar Head Group ◽  
Detergent Concentration ◽  
Human Erythrocyte Membranes ◽  
Hydrophobic Tail ◽  
Triton X

The activities of acetylcholinesterase and Ca2+ + Mg2+ ATPase were measured following treatment of human erythrocyte membranes with nonsolubilizing and solubilizing concentrations of Triton X-100. A concentration of 0.1% (v/v) Triton X-100 caused a significant inhibition of both enzymes. The inhibition appears to be caused by perturbations in the membrane induced by Triton X-100 incorporation. No acetylcholinesterase activity and little Ca2+ + Mg2+ ATPase activity were detected in the supernatant at 0.05% Triton X-100 although this same detergent concentration induced changes in the turbidity of the membrane suspension. Also, no inhibition of soluble acetylcholinesterase was observed over the entire detergent concentration range. The inhibition of these enzymes at 0.1% Triton X-100 was present over an eightfold range of membrane protein in the assay indicating an independence of the protein/detergent ratio. The losses in activities of these two enzymes could be prevented by either including phosphatidylserine in the Triton X-100 suspension or using Brij 96 which has the same polyoxyethylene polar head group but an oleyl hydrophobic tail instead of the p-tert-octylphenol group of Triton X-100. The results are discussed in regard to the differential recovery of enzyme activities over the entire detergent concentration range.Key words: Triton X-100, erythrocyte membranes, acetylcholinesterase, Ca2+ + Mg2+ ATPase, polyoxyethylene detergents.

Microwave-assisted aqueous synthesis of Mn-doped ZnS quantum dots and their room-temperature phosphorescence detection of indapamide

2014 ◽  
Vol 6 (18) ◽  
pp. 7489-7495 ◽  
Author(s):  
Dong Zhu ◽  
Wei Li ◽  
Hong-Mei Wen ◽  
Qian Chen ◽  
Li Ma ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Quantum Dots ◽  
Room Temperature ◽  
Synthetic Approach ◽  
Room Temperature Phosphorescence ◽  
High Quality ◽  
Aqueous Synthesis ◽  
Microwave Assisted ◽  
Mn Doped

High-quality Mn-doped ZnS QDs were prepared using a green and rapid microwave-assisted synthetic approach in an aqueous solution, which were used for room-temperature phosphorescence (RTP) detection of indapamide.

Self-assembly of phosphorescent quantum dots/boronic-acid-substituted viologen nanohybrids based on photoinduced electron transfer for glucose detection in aqueous solution

RSC Advances ◽  
2016 ◽  
Vol 6 (11) ◽  
pp. 8588-8593 ◽  
Author(s):  
Yanming Miao ◽  
Maoqing Yang ◽  
Guiqin Yan
Keyword(s):  
Aqueous Solution ◽  
Quantum Dots ◽  
Electron Transfer ◽  
Self Assembly ◽  
Boronic Acid ◽  
Photoinduced Electron Transfer ◽  
Room Temperature ◽  
Glucose Sensor ◽  
Glucose Detection ◽  
Room Temperature Phosphorescence

We synthesized boronic-acid-substituted viologens (BBV) and designed a glucose sensor based on room-temperature phosphorescence (RTP) quantum dots (QDs) and BBV.

Phosphate-containing metabolites switch on phosphorescence of ferric ion engineered carbon dots in aqueous solution

RSC Advances ◽  
2014 ◽  
Vol 4 (43) ◽  
pp. 22318-22323 ◽  
Author(s):  
Xiao Yan ◽  
Jin-Long Chen ◽  
Meng-Xiang Su ◽  
Fang Yan ◽  
Bo Li ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Human Blood ◽  
Carbon Dots ◽  
Room Temperature ◽  
Cost Effective ◽  
Human Blood Plasma ◽  
Ferric Ion ◽  
Ferric Ions ◽  
Room Temperature Phosphorescence ◽  
Atp Level

Room temperature phosphorescence of carbon dots readily engineered by ferric ions in aqueous solution was developed for a novel “off-to-on” approach for cost-effective estimation of ATP level in human blood plasma.

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