14222-98-1Relevant academic research and scientific papers
Tris(5-aryl-1,3,4-oxadiazolyl)benzotrithiophenes – Discotic Liquid Crystals with Enormous Mesophase Ranges
Tober, Natalie,Winter, Johannes,Jochem, Matthias,Lehmann, Matthias,Detert, Heiner
, p. 798 - 809 (2021/02/01)
C3-symmetrical, alkoxyphenyl substituted 2,5,8-(tris-1,3,4-oxadiazol-2-yl)benzo [1,2-b; 3,4-b′; 5,6-b′′]trithiophenes (OXD-BTT) are synthesized via threefold Huisgen-reaction. A broad variation of alkoxy substitution pattern and chain lengths is reported. The thermal behavior was investigated via differential scanning calorimetry (DSC), polarized optical microscopy (POM) and thermogravimetry (TGA). Optical properties were studied via UV-Vis and fluorescence spectroscopy. Structural information of the LC phases was gained from X-ray diffraction on oriented fibers. OXD-BTT provide enormous phase widths (ΔT≥289 K) with clearing points close to thermal decomposition. Most of the derivatives exhibit two different mesophases, the lower phase with a rectangular 3D-structure and a hexagonal 2D-lattice at higher temperature. The variation of the chain length allows a tuning of melting and clearing points. OXD-BTT emit blue light with fluorescence quantum yields up to 30 % in good solvents. The emission is very sensitive to aggregation, thus, in poor solvents the emission intensity decreases, and red shift of maxima occurs.
Benzotrithiophene-Based Covalent Organic Frameworks: Construction and Structure Transformation under Ionothermal Condition
Wei, Hongtao,Ning, Jing,Cao, Xingdi,Li, Xuehui,Hao, Long
, p. 11618 - 11622 (2018/09/29)
A C3-symmetric benzotrithiophene tricarbaldehyde (BTT) is synthesized for the first time with a facile method, which is used to construct BTT-based covalent organic frameworks (COFs) with different pore sizes. Meanwhile, the structure transform
π-Conjugated Microporous Polymer Films: Designed Synthesis, Conducting Properties, and Photoenergy Conversions
Gu, Cheng,Huang, Ning,Chen, Youchun,Qin, Leiqiang,Xu, Hong,Zhang, Shitong,Li, Fenghong,Ma, Yuguang,Jiang, Donglin
, p. 13594 - 13598 (2015/11/16)
Conjugated microporous polymers are a unique class of polymers that combine extended π-conjugation with inherent porosity. However, these polymers are synthesized through solution-phase reactions to yield insoluble and unprocessable solids, which preclude
Stepwise adsorption in a mesoporous metal-organic framework: Experimental and computational analysis
Yuan, Daqiang,Getman, Rachel B.,Wei, Zhangwen,Snurr, Randall Q.,Zhou, Hong-Cai
supporting information; scheme or table, p. 3297 - 3299 (2012/05/04)
Stepwise adsorption in a metal-organic framework with both micro- and meso-pores is caused by adsorbates first filling the micropores, then adsorbing along the mesopore walls, and finally filling the mesopores. The Royal Society of Chemistry 2012.
Synthesis, polymerization, and unusual properties of new star-shaped thiophene oligomers
Taerum, Tyler,Lukoyanova, Olena,Wylie, Ryan G.,Perepichka, Dmitrii F.
supporting information; experimental part, p. 3230 - 3233 (2009/11/30)
Terthienobenzene (TTB, 6) was prepared through a new, high yield route along with π-extended derivatives 10 and 11. Electropolymerization of trs-EDOT derivative 11 results in a highly stable cross-linked conjugated polymer that shows polaron confinement b
