Synthesis and characterization of oligo(2,5-bis(3-dodecylthiophen-2-yl)thieno[3,2-b]thiophene)s: effect of the chain length and end-groups on their optical and charge transport properties

2014 ◽  
Vol 2 (46) ◽  
pp. 9978-9986 ◽  
Author(s):  
Li Wang ◽  
Xiaojie Zhang ◽  
Jidong Zhang ◽  
Hongkun Tian ◽  
Yunfeng Lu ◽  
...  
Keyword(s):  
Charge Transport ◽  
Transport Properties ◽  
Chain Length ◽  
Synthesis And Characterization ◽  
End Groups

Design, synthesis, and characterization of α,ω-disubstituted indeno[1,2-b]fluorene-6,12-dione-thiophene molecular semiconductors. Enhancement of ambipolar charge transport through synthetic tailoring of alkyl substituents

RSC Advances ◽  
2016 ◽  
Vol 6 (1) ◽  
pp. 212-226 ◽  
Author(s):  
Mehmet Ozdemir ◽  
Donghee Choi ◽  
Guhyun Kwon ◽  
Yunus Zorlu ◽  
Hyekyoung Kim ◽  
...  
Keyword(s):  
Charge Transport ◽  
Transport Properties ◽  
Synthesis And Characterization ◽  
Design Synthesis ◽  
Solution Processable ◽  
Molecular Semiconductors

A series of novel solution-processable α,ω-disubstituted indeno[1,2-b]fluorene-6,12-dione-thiophene ambipolar semiconductors were developed and characterized in OTFT devices with favorable charge-transport properties.

Synthesis and characterization of a series of novel phenol- and polyphenol-based glycerolipids

2006 ◽  
Vol 84 (10) ◽  
pp. 1411-1415 ◽  
Author(s):  
Rolf Schmidt ◽  
Joseph G Carrigan ◽  
Christine E DeWolf
Keyword(s):  
Hydrogen Bonding ◽  
Chain Length ◽  
Protein Interaction ◽  
Building Block ◽  
Synthesis And Characterization ◽  
Synthetic Route ◽  
Substitution Pattern ◽  
Lipid Protein Interaction ◽  
Block Approach

A building block approach was used to design a modular synthetic route for the preparation of novel glycerolipids with phenolic and polyphenolic headgroups. Based on this scheme, it is possible to vary the substitution pattern of the headgroup, the stereochemistry of the backbone, and the length of the sidechains. Five glycerolipids with different headgroups and identical backbone stereochemistry and chain length have been prepared.Key words: glycerolipid, polyphenol, hydrogen bonding, lipid-protein interaction, self-adhering.

Synthesis and Characterization of Carboxyl-Terminated Hyperbranched Polyester

2014 ◽  
Vol 665 ◽  
pp. 327-330
Author(s):  
Shi Jie Niu ◽  
Jian Wang ◽  
Yu Qing Bai ◽  
Ming Tao Run
Keyword(s):  
Glass Transition ◽  
Sodium Acetate ◽  
Succinic Anhydride ◽  
Molar Ratio ◽  
Synthesis And Characterization ◽  
Hydroxyl Groups ◽  
Hyperbranched Polyester ◽  
End Groups ◽  
Lower Glass Transition Temperature

In order to prepare carboxyl-terminated hyperbranched polyester (HBP-COOH), succinic anhydride was used to modify hydroxyl-terminated hyperbranched polyester (HBP-OH), and the influences of the solvents, catalysts and time on the product’s structure were investigated. When THF is used as the solvent, sodium acetate as the catalyst, the molar ratio of succinic anhydride and hydroxyl groups is 3:1, and the reaction time is 6 h at 65°C, the modification extent of the hydroxyl groups is about 99% with about 95% yield. HBP-COOH has much lower glass transition temperature than that of HBP-OH due to its long and flexible end-groups.

scholarly journals Modified polysulfones 5: synthesis and characterization of tetramethyl polysulfones containing trimethylsilyl groups and their gas transport properties

Polymer ◽  
2002 ◽  
Vol 43 (20) ◽  
pp. 5369-5378 ◽  
Author(s):  
Ying Dai ◽  
Michael D Guiver ◽  
Gilles P Robertson ◽  
François Bilodeau ◽  
Yong Soo Kang ◽  
...  
Keyword(s):  
Transport Properties ◽  
Gas Transport ◽  
Synthesis And Characterization ◽  
Gas Transport Properties ◽  
Trimethylsilyl Groups

Approaching the size limit of organometallic layers: synthesis and characterization of highly ordered silver–thiolate lamellae with ultra-short chain lengths

2016 ◽  
Vol 45 (47) ◽  
pp. 18954-18966 ◽  
Author(s):  
Zichao Ye ◽  
Lito P. de la Rama ◽  
Mikhail Y. Efremov ◽  
Jian-Min Zuo ◽  
Leslie H. Allen
Keyword(s):  
Single Crystal ◽  
Chain Length ◽  
Short Chain ◽  
Synthesis And Characterization ◽  
Size Limit ◽  
Chain Conformations ◽  
Chain Lengths

Synthesis of single crystal silver alkanethiolate (any chain length) lamellae with highly ordered chain conformations, interlayer interfaces and intralayer lattices.

Synthesis and Characterization of A2+B4 Hyperbranched Polyesters with Hydroxyl End Groups

2014 ◽  
Vol 937 ◽  
pp. 80-85 ◽  
Author(s):  
Haroon A.M. Saeed ◽  
Yassir A. Eltahir ◽  
Yu Min Xia ◽  
Yi Min Wang
Keyword(s):  
Weight Loss ◽  
Isophthalic Acid ◽  
Synthesis And Characterization ◽  
Degree Of Branching ◽  
H Nmr ◽  
Hyperbranched Polyesters ◽  
Melt Polycondensation ◽  
End Groups ◽  
C Nmr

Hydroxyl-terminated hyperbranched polyesters (HBPET) with aromatic-aliphatic structure were synthesized by melt polycondensation of isophthalic acid and pentaerythritol via A2+ B4 approach, at three different monomer mole ratios (A2/B4 =1:1, 1.5:1, 2:1, respectively). Fourier transform infrared (FTIR) spectroscopy indicated that the expected HBPET. The degree of branching of the HBPET was estimated to be between 0.39–0.45 by 1H-NMR and 13C-NMR measurement. The thermogravimetric analysis ( TGA ) measurement revealed that HBPET had a 10 % weight-loss at 350°C in N2.

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