An optical sensor for discriminating the chemical compositions and sizes of plastic particles in water based on water-soluble networks consisting of polyhedral oligomeric silsesquioxane presenting dual-color luminescence

2019 ◽  
Vol 3 (12) ◽  
pp. 2690-2695 ◽  
Author(s):  
Ryota Nakamura ◽  
Hayato Narikiyo ◽  
Masayuki Gon ◽  
Kazuo Tanaka ◽  
Yoshiki Chujo
Keyword(s):  
Optical Sensor ◽  
Color Change ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Water Soluble ◽  
Chemical Compositions ◽  
Dual Color ◽  
Water Based ◽  
Cross Linker ◽  
Oligomeric Silsesquioxane

Luminescent water-soluble networks containing coumarin were prepared using polyhedral oligomeric silsesquioxane (POSS) as a cross-linker, and plastic particles in water can be detected by luminescent color change.

scholarly journals A Selenone-Functionalized Polyhedral Oligomeric Silsesquioxane for Selective Detection and Adsorption of Hg2+ ions in Aqueous Solutions

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2084 ◽  
Author(s):  
Hailong Liu ◽  
Zixu Chen ◽  
Shengyu Feng ◽  
Dengxu Wang ◽  
Hongzhi Liu
Keyword(s):  
Aqueous Solutions ◽  
Acid Treatment ◽  
Color Change ◽  
Limit Of Detection ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Functional Materials ◽  
29Si Nmr ◽  
Highly Sensitive ◽  
Ft Ir ◽  
Oligomeric Silsesquioxane

Developing novel functional polyhedral oligomeric silsesquioxane (POSS) for various applications is highly desirable. Herein we present the first example of a novel selenone-functionalized POSS (POSS-Se) by treating an imidazolium-containing POSS with selenium powder under mild condition. The structure of POSS-Se was characterized by FT-IR, 1H NMR, 13C NMR, 29Si NMR, and elemental analysis. Acid treatment of POSS-Se results in a hydrophilic red-orange colored solid, which is highly sensitive and selective for the detection of Hg2+ ions in aqueous solutions by visually observing the color change to pale yellow, and to white. Interestingly, POSS-Se has no activity on this detection. This finding is due to the Se–Se formation by acid-treatment and subsequent coordination-induced cleavage upon the addition of Hg2+ ions. The detection behavior can be precisely monitored by a “turn-on” fluorescence phenomenon with the limit of detection (LOD) of 8.48 ppb, comparable to or higher than many reported Hg2+ sensors. Moreover, POSS-Se demonstrates a selective and efficient adsorption of Hg2+ ions with a maximum capacity of 952 mg g–1. The value is higher than most reported adsorbents for Hg2+ ions, typically thiol and/or thioether functional materials, indicating its promise as an efficient adsorbent for the selective removal of Hg2+ ions from industrial wastewater. This work may open up new horizons for the exploration of selenium-containing functional POSS.

scholarly journals Synthesis of emissive water-soluble network polymers based on polyhedral oligomeric silsesquioxane and their application as optical sensors for discriminating the particle size

2015 ◽  
Vol 3 (48) ◽  
pp. 12539-12545 ◽  
Author(s):  
Takahiro Kakuta ◽  
Kazuo Tanaka ◽  
Yoshiki Chujo
Keyword(s):  
Particle Size ◽  
Optical Sensors ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Silica Particles ◽  
Water Soluble ◽  
Hybrid Gels ◽  
Inorganic Hybrid ◽  
Emission Properties ◽  
Network Polymers ◽  
Oligomeric Silsesquioxane

We report organic–inorganic hybrid gels composed of polyhedral oligomeric silsesquioxane (POSS)-based network polymers and their variable emission properties depending on the size of coexisting silica particles (SPs).

Polyhedral Oligomeric Silsesquioxane as a Cross-linker for Preparation of Inorganic−Organic Hybrid Monolithic Columns

2010 ◽  
Vol 82 (13) ◽  
pp. 5447-5454 ◽  
Author(s):  
Minghuo Wu ◽  
Ren’an Wu ◽  
Ruibing Li ◽  
Hongqiang Qin ◽  
Jing Dong ◽  
...  
Keyword(s):  
Polyhedral Oligomeric Silsesquioxane ◽  
Monolithic Columns ◽  
Organic Hybrid ◽  
Cross Linker ◽  
Oligomeric Silsesquioxane

scholarly journals High Refractive-Index Hybrids Consisting of Water-Soluble Matrices with Bipyridine-Modified Polyhedral Oligomeric Silsesquioxane and Lanthanoid Cations

Polymers ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1560
Author(s):  
Kazunari Ueda ◽  
Takahiro Kakuta ◽  
Kazuo Tanaka ◽  
Yoshiki Chujo
Keyword(s):  
Refractive Index ◽  
Dicarboxylic Acid ◽  
Metal Ion ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
High Refractive Index ◽  
Water Soluble ◽  
Feed Ratio ◽  
Variable Cross ◽  
Aqueous Mixtures ◽  
Oligomeric Silsesquioxane

We report high refractive-index (RI) films composed of polyhedral oligomeric silsesquioxane (SSQ) matrices and various lanthanoid cations. The SSQ matrices were constructed from octaammonium SSQ by connecting with bipyridine dicarboxylic acid, which is expected to capture cations. By modulating the feed ratio between SSQ and dicarboxylic acid, the series of the SSQ matrices were obtained with variable cross-linking ratios among the SSQ units. Thin transparent films were able to be prepared through the drop-casting method with the aqueous mixtures containing SSQ matrices and various kinds of lanthanoid salts up to 40 wt %. From RI measurements, it was revealed that the increase of the amount of the metal ion can significantly lift up the RI values. In particular, critical losses of Abbe numbers, which theoretically have the trade-off relationship toward increases in RI values, were hardly detected. This effect could be obtained by cation assembly in local spots that are assisted by SSQ.

Water soluble polyhedral oligomeric silsesquioxane based amphiphilic hybrid polymers: Synthesis, self-assembly, and applications

2016 ◽  
Vol 75 ◽  
pp. 67-92 ◽  
Author(s):  
Asad Ullah ◽  
Shakir Ullah ◽  
Gul Shehzada Khan ◽  
Syed Mujtaba Shah ◽  
Zakir Hussain ◽  
...  
Keyword(s):  
Self Assembly ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Water Soluble ◽  
Hybrid Polymers ◽  
Oligomeric Silsesquioxane

Paclitaxel nano-conjugated to polyhedral oligomeric silsesquioxane (POSS) nanoparticles as a novel water-soluble prodrug

2021 ◽  
pp. 131013
Author(s):  
Jafar Rezie ◽  
Nasrollah Jabbari ◽  
Sadegh Asghari Kalashani ◽  
Esmaiel Jabbari ◽  
Ali Akbari
Keyword(s):  
Polyhedral Oligomeric Silsesquioxane ◽  
Water Soluble ◽  
Oligomeric Silsesquioxane
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