Efficient persistent room temperature phosphorescence achieved through Zn 2+ doped sodium carboxymethyl cellulose composites

2018 ◽  
Vol 8 ◽  
pp. 106-110 ◽  
Author(s):  
Linlin Du ◽  
Gang He ◽  
Yongyang Gong ◽  
Wang Zhang Yuan ◽  
Song Wang ◽  
...  
Keyword(s):  
Carboxymethyl Cellulose ◽  
Room Temperature ◽  
Sodium Carboxymethyl Cellulose ◽  
Room Temperature Phosphorescence ◽  
Cellulose Composites

scholarly journals Formulation Optimization and Evaluation of Probiotic Lactobacillus sporogenes-Loaded Sodium Alginate with Carboxymethyl Cellulose Mucoadhesive Beads Using Design Expert Software

2016 ◽  
Vol 2016 ◽  
pp. 1-14 ◽  
Author(s):  
Himanshu K. Solanki ◽  
Dushyant A. Shah
Keyword(s):  
Carboxymethyl Cellulose ◽  
Room Temperature ◽  
Entrapment Efficiency ◽  
Gastric Fluid ◽  
Pharmaceutical Products ◽  
Sodium Carboxymethyl Cellulose ◽  
Simulated Gastric Fluid ◽  
Formulation Optimization ◽  
Design Expert ◽  
Alginate Concentration

The present study deals with the formulation optimization of sodium carboxymethyl cellulose-alginate mucoadhesive beads containing probiotic Lactobacillus sporogenes through ionotropic gelation using 32 factorial design. The effect of sodium carboxymethyl cellulose-alginate concentration on the probiotic entrapment efficiency (PEE, %), viability in simulated gastric fluid (log CFU/g), and mucoadhesion over 8 hr (%) was optimized. The optimized beads containing probiotic Lactobacillus sporogenes showed entrapment efficiency of 93.7±1.97%, viability of probiotic in simulated gastric fluid (log CFU/g) of 9.34, mucoadhesion of 71.75±1.38%, and mean diameter of 1.21±0.11 mm. The beads were also characterized by SEM, FTIR, and XRD. The swelling and degradation of these beads were influenced by pH of the test medium. Finally, stability tests performed at room temperature (25~28°C) highlighted a bacterial viability of about 91% and 86% after 1 and 2 months, respectively. The advantageous properties of probiotic Lactobacillus sporogenes-loaded mucoadhesive beads make them suitable for incorporation in functional food and/or pharmaceutical products.

Effects of Trehalose and Sodium Carboxymethyl Cellulose on Prevention of Organ Adhesion after Laparotomy: A Preliminary Study

2009 ◽  
Vol 40 (2) ◽  
pp. 19-26 ◽  
Author(s):  
Soojung LEE ◽  
Yasutsugu MIWA ◽  
Ryohei NISHIMURA ◽  
Ung-il CHUNG ◽  
Shigeki SUZUKI ◽  
...  
Keyword(s):  
Carboxymethyl Cellulose ◽  
Sodium Carboxymethyl Cellulose ◽  
Preliminary Study

DNA Inspirited Rational Construction of Nonconventional Luminophores with Efficient and Color-Tunable Afterglow

2020 ◽  
Author(s):  
Yunzhong Wang ◽  
Saixing Tang ◽  
Yating Wen ◽  
Shuyuan Zheng ◽  
Bing Yang ◽  
...  
Keyword(s):  
Rational Design ◽  
Room Temperature ◽  
Double Helix ◽  
Mechanical Grinding ◽  
Room Temperature Phosphorescence ◽  
Color Tunable ◽  
Potential Applications ◽  
Rational Construction ◽  
Double Helix Structure ◽  
Made In

<div>Persistent room-temperature phosphorescence (p-RTP) from pure organics is attractive </div><div>due to its fundamental importance and potential applications in molecular imaging, </div><div>sensing, encryption, anticounterfeiting, etc.1-4 Recently, efforts have been also made in </div><div>obtaining color-tunable p-RTP in aromatic phosphors5 and nonconjugated polymers6,7. </div><div>The origin of color-tunable p-RTP and the rational design of such luminogens, </div><div>particularly those with explicit structure and molecular packing, remain challenging. </div><div>Noteworthily, nonconventional luminophores without significant conjugations generally </div><div>possess excitation-dependent photoluminescence (PL) because of the coexistence of </div><div>diverse clustered chromophores6,8, which strongly implicates the possibility to achieve </div><div>color-tunable p-RTP from their molecular crystals assisted by effective intermolecular </div><div>interactions. Here, inspirited by the highly stable double-helix structure and multiple </div><div>hydrogen bonds in DNA, we reported a series of nonconventional luminophores based on </div><div>hydantoin (HA), which demonstrate excitation-dependent PL and color-tunable p-RTP </div><div>from sky-blue to yellowish-green, accompanying unprecedentedly high PL and p-RTP </div><div>efficiencies of up to 87.5% and 21.8%, respectively. Meanwhile, the p-RTP emissions are </div><div>resistant to vigorous mechanical grinding, with lifetimes of up to 1.74 s. Such robust, </div><div>color-tunable and highly efficient p-RTP render the luminophores promising for varying </div><div>applications. These findings provide mechanism insights into the origin of color-tunable </div><div>p-RTP, and surely advance the exploitation of efficient nonconventional luminophores.</div>

Clustering-Triggered Efficient Room Temperature Phosphorescence from Nonconventional Luminophores

2019 ◽  
Author(s):  
Shuyuan Zheng ◽  
Taiping Hu ◽  
Xin Bin ◽  
Yunzhong Wang ◽  
Yuanping Yi ◽  
...  
Keyword(s):  
Room Temperature ◽  
High Efficiency ◽  
Spin Orbit Coupling ◽  
Design Rationale ◽  
Emission Mechanism ◽  
Room Temperature Phosphorescence ◽  
Electronic Interactions ◽  
Energy Gaps ◽  
Theoretical Results

Pure organic room temperature phosphorescence (RTP) and luminescence from nonconventional luminophores have gained increasing attention. However, it remains challenging to achieve efficient RTP from unorthodox luminophores, on account of the unsophisticated understanding of the emission mechanism. Here we propose a strategy to realize efficient RTP in nonconventional luminophores through incorporation of lone pairs together with clustering and effective electronic interactions. The former promotes spin-orbit coupling and boost the consequent intersystem crossing, whereas the latter narrows energy gaps and stabilizes the triplets, thus synergistically affording remarkable RTP. Experimental and theoretical results of urea and its derivatives verify the design rationale. Remarkably, RTP from thiourea solids with unprecedentedly high efficiency of up to 24.5% is obtained. Further control experiments testify the crucial role of through-space delocalization on the emission. These results would spur the future fabrication of nonconventional phosphors, and moreover should advance understanding of the underlying emission mechanism.<br>

Optimization of hydroxypropyl methylcellulose and sodium carboxymethyl cellulose in buccal film salbutamol sulphate

2020 ◽  
Vol 23 (03) ◽  
pp. 33-49
Author(s):  
Ni’matul Mauludiyah ◽  
Devi Ayu Aprillia ◽  
Viddy Agustian Rosyidi ◽  
Lusia Oktora Ruma Kumala Sari
Keyword(s):  
Carboxymethyl Cellulose ◽  
Hydroxypropyl Methylcellulose ◽  
Sodium Carboxymethyl Cellulose ◽  
Salbutamol Sulphate
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