Determination of phosphate anions with a near-infrared heptamethine cyanine dye in a neutral aqueous solution

2019 ◽  
Vol 11 (20) ◽  
pp. 2677-2682 ◽  
Author(s):  
Xia Gao ◽  
Jie Xu ◽  
Baoxian Ye ◽  
Weidong Wu ◽  
Hong Zheng
Keyword(s):  
Aqueous Solution ◽  
Near Infrared ◽  
Cyanine Dye ◽  
Neutral Aqueous Solution ◽  
Phosphate Anions ◽  
Novel Strategy

A novel strategy was developed for the detection of phosphate anions with anionic heptamethine cyanine and Tb3+ in the NIR region.

A colorimetric and near -infrared ratiometric fluorescent probe for the determination of endogenous tyrosinase activity based on cyanine aggregation

The Analyst ◽  
2019 ◽  
Vol 144 (18) ◽  
pp. 5472-5478 ◽  
Author(s):  
Peng Zhang ◽  
Shasha Li ◽  
Caixia Fu ◽  
Qian Zhang ◽  
Yuzhe Xiao ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Near Infrared ◽  
High Sensitivity ◽  
Tyrosinase Activity ◽  
Cyanine Dye ◽  
Ratiometric Fluorescent Probe

A ratiometric fluorescent probe for TYR activity with high sensitivity was developed based on the H-aggregation of a cyanine dye.

Performance and Selected Applications of an Acousto-Optic Tunable Filter Near-Infrared Spectrometer

1995 ◽  
Vol 49 (2) ◽  
pp. 177-180 ◽  
Author(s):  
Martin Hühne ◽  
Ursula Eschenauer ◽  
Heinz W. Siesler
Keyword(s):  
Aqueous Solution ◽  
Fiber Optics ◽  
Near Infrared ◽  
Tunable Filter ◽  
Near Ir ◽  
Infrared Spectrometer ◽  
And Performance ◽  
Contact Free ◽  
Near Infrared Spectrometer

The design and applications of a near-infrared (near-IR) spectrometer with an acousto-optic tunable filter (AOTF) as monochromator and light fiber optics are described. The aim of this spectrometer is rapid product and reaction control via remote sensing and chemometric data evaluation. Its application and performance are illustrated by the determination of the water content of acetone and by the contact-free temperature measurement of an aqueous solution.

scholarly journals Binding Affinity and Driving Forces for the Interaction of Calixarene-Based Micellar Aggregates With Model Antibiotics in Neutral Aqueous Solution

2021 ◽  
Vol 8 ◽  
Author(s):  
Rossella Migliore ◽  
Giuseppe Granata ◽  
Andrea Rivoli ◽  
Grazia Maria Letizia Consoli ◽  
Carmelo Sgarlata
Keyword(s):  
Aqueous Solution ◽  
Nmr Spectra ◽  
Drug Delivery Systems ◽  
Driving Forces ◽  
Titration Calorimetry ◽  
Self Assembling ◽  
Micellar Aggregates ◽  
Nanostructured Systems ◽  
Neutral Aqueous Solution

The search for novel surfactants or drug delivery systems able to improve the performance of old-generation antibiotics is a topic of great interest. Self-assembling amphiphilic calix[4]arene derivatives provide well-defined nanostructured systems that exhibit promising features for antibiotics delivery. In this work, we investigated the capability of two micellar polycationic calix[4]arene derivatives to recognize and host ofloxacin, chloramphenicol, or tetracycline in neutral aqueous solution. The formation of the nanoaggregates and the host–guest equilibria were examined by nano-isothermal titration calorimetry, dynamic light scattering, and mono- and bi-dimensional NMR. The thermodynamic characterization revealed that the calix[4]arene-based micellar aggregates are able to effectively entrap the model antibiotics and enabled the determination of both the species and the driving forces for the molecular recognition process. Indeed, the formation of the chloramphenicol–micelle adduct was found to be enthalpy driven, whereas entropy drives the formation of the adducts with both ofloxacin and tetracycline. NMR spectra corroborated ITC data about the positioning of the antibiotics in the calixarene nanoaggregates.

Direct spectrometric determination of proteins in body fluids using a near-infrared cyanine dye

2003 ◽  
Vol 377 (2) ◽  
pp. 350-355 ◽  
Author(s):  
Wei-Rong Li ◽  
Hong Wang ◽  
Ting-Xian Yang ◽  
Hua-Shan Zhang
Keyword(s):  
Near Infrared ◽  
Body Fluids ◽  
Cyanine Dye

A facile fluorescent probe based on anthraldehyde for trace Fe(iii) ion determination in neutral aqueous solution

2015 ◽  
Vol 7 (1) ◽  
pp. 353-358 ◽  
Author(s):  
Dawei Huang ◽  
Zhuping Gao ◽  
Hao Yi ◽  
Yongxin Bing ◽  
Chenggang Niu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Fluorescent Probe ◽  
Neutral Aqueous Solution

A flexible fluorescent probe was synthesized for the determination of Fe(iii) in aqueous solution by conjugating 4-aminoacetophenone into 9-anthraldehyde.

IR-808 Loaded Nanoethosomes for Aggregation-Enhanced Synergistic Transdermal Photodynamic/Photothermal Treatment of Hypertrophic Scars

2021 ◽  
Author(s):  
Zhixi Yu ◽  
Xinxian Meng ◽  
Shunuo Zhang ◽  
Xiaodian Wang ◽  
Yunsheng Chen ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Hypertrophic Scar ◽  
Photothermal Therapy ◽  
Near Infrared ◽  
Therapeutic Outcome ◽  
Cyanine Dye ◽  
Hypertrophic Scars ◽  
Photothermal Treatment ◽  
Novel Strategy

Synergistic transdermal photodynamic therapy (PDT)/photothermal therapy (PTT) has emerged as a novel strategy for improving hypertrophic scar (HS) therapeutic outcome. Herein, a near-infrared heptamethine cyanine dye, named IR-808, has been...

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