- A facile layer-by-layer assembly method for the fabrication of fluorescent polymer/quantum dot nanocomposite thin films
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We demonstrated an efficient and robust approach for the preparation of polymer/quantum dot (QD) nanocomposite thin films in nonpolar media. By employing photopolymerization based on the thiol-ene reaction, thiol-containing polymer with affinity groups for CdSe@CdS QDs was produced for the buildup of the polymer/CdSe@CdS QD nanocomposite thin films utilizing layer-by-layer assembly. The polymer/QD nanocomposite films were characterized by SEM, TEM, fluorescence spectrometry, thermogravimetric analysis, confocal laser scanning microscopy and time-resolved fluorescence spectrometry. The resulting free-standing polymer/QD nanocomposite films exhibit high fluorescent intensity, moderate transparency, good photostability and thermal stability. We further applied photolithographic patterning in conjunction with an LBL assembly method to fabricate a polymer/CdSe@CdS QD nanocomposite pattern on a flexible substrate. This versatile and facile method provides prospects for the design of novel photonic devices based on the polymer/QD nanocomposite thin films. the Partner Organisations 2014.
- Jin, Feng,Zheng, Mei-Ling,Zhang, Mei-Lin,Zhao, Zhen-Sheng,Duan, Xuan-Ming
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- Optimization of synthetic parameters of high-purity trifunctional mercaptoesters and their curing behavior for the thiol-epoxy click reaction
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The direct esterification reaction between 3-mercaptopropionic acid (3-MPA) and trimethylolpropane (TMP) was conducted in the presence of various catalyst concentrations of p-toluenesulfonic acid (p-TSA) to examine the optimized synthetic conditions neede
- Hong, Seung-Mo,Hwang, Seok-Ho,Kim, Oh Young
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p. 34263 - 34268
(2021/12/07)
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- METHOD FOR PRODUCING 3-MERCAPTOPROPIONIC ACID, AND METHODS USING SAME FOR PRODUCING CARBOXYLIC ACID ESTER COMPOUND HAVING MERCAPTO GROUP AND THIOURETHANE-BASED OPTICAL MATERIAL
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A method for producing 3-mercaptopropionic acid and methods using same for producing a carbonic acid ester compound having a mercapto group and a thiourethane-based optical material. The present invention improves a process during the production of 3-mercaptopropionic acid, significantly increases yield, and reduces the temperature and time during vacuum distillation, thereby preventing the destruction of a product and significantly increasing productivity. The present invention allows high-purity 3-mercaptopropionic acid having an excellent color to be finally yielded; accordingly, by using same, a high-purity carbonic acid ester compound having an excellent color and a mercapto group can be inexpensively obtained. A thiourethane-based polymeric composition and a thiourethane-based optical material obtained by polymerizing same can likewise be inexpensively obtained by using said carbonic acid ester compound. Such carbonic acid ester compound can be used for the production of inexpensive thiourethane optical lenses; consequently, inexpensive optical lenses having an excellent color can be obtained.
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Paragraph 0055-0056; 0059
(2018/07/15)
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- PURIFICATION METHOD OF THIOL COMPOUND, AND MANUFACTURING METHOD OF THIOL COMPOUND
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PROBLEM TO BE SOLVED: To provide a purification method of a thiol compound capable of easily conducting removal of acidic impurities containing a sulfur element from the thiol compound, and applicable to manufacturing in an industrial scale. SOLUTION: The purification method of a thiol compound is a method for purifying the thiol compound obtained by a reaction using an acidic compound containing a sulfur element as a catalyst, and includes a process for mixing the thiol compound and an inorganic compound containing at least one kind selected from a group consisting of layered double hydroxide represented by the following formula (1) and zinc oxide, and a process for separating the inorganic compound from a mixture obtained in the mixing process. (M1)1-x(M2)x(OH)2(An-)x/n mH2O (1), where M1 represents at least one kind selected from a group consisting of Zn, Mg, Fe and Ca, and at least a part is Zn, M2 represents at least one kind element selected from a group consisting of Al and Fe, An- represents n-valent interlayer anion, x and n are numbers satisfying conditions 0.2≤x≤0.4, 1≤n≤4 respectively, and m is the number of 0 or more. SELECTED DRAWING: None COPYRIGHT: (C)2019,JPOandINPIT
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Paragraph 0047
(2019/02/28)
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- Preparing method for multi-mercapto carboxylic ester
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The invention provides a preparing method for multi-mercapto carboxylic ester. The preparing method comprises the steps that mercapto carboxylic acid and polyhydric alcohol react under the conditions that the pressure intensity is smaller than or equal to -0.07 MPa and the temperature ranges from 80 DEG C to 100 DEG C, and multi-mercapto carboxylic ester is obtained. According to the preparing method, the esterification reaction of mercapto carboxylic acid and polyhydric alcohol is carried out under the conditions of the high temperature and negative pressure, and a water-carrying agent is not needed, so that a series of problems brought by the water-carrying agent are solved, the loss of the water-carrying agent is avoided, the reaction speed is increased, and meanwhile the product quality is improved.
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Paragraph 0073; 0074
(2017/02/17)
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- INK COMPOSITION, INKJET RECORDING METHOD, PRINTED MATTER, AND HIGH-MOLECULAR-WEIGHT POLYMERIZATION INITIATOR
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An ink composition contains (component A) a high-molecular-weight polymerization initiator having a weight-average molecular weight of equal to or greater than 1,000, (component B) a polymerizable compound, and (component C) a colorant, in which the component A has an acylphosphine oxide structure, and the acylphosphine oxide structure is linked to a main chain or a core of the component A on the side of an acyl group thereof.
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