Poly(pyridinium salt)s with organic counterions derived from an aromatic diamine containing tetraoxyethylene units exhibiting amphotropic liquid-crystalline and photoluminescence properties

2009 ◽  
pp. n/a-n/a ◽  
Author(s):  
Pradip K. Bhowmik ◽  
Haesook Han ◽  
Alexi K. Nedeltchev ◽  
Hari D. Mandal ◽  
Jose A. Jimenez-Hernandez ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Pyridinium Salt ◽  
Aromatic Diamine ◽  
Photoluminescence Properties

Poly(pyridinium salt)s with organic counterions derived from an aromatic diamine containing oxyethylene unit exhibiting amphotropic liquid-crystalline and photoluminescence properties

Polymer ◽  
2009 ◽  
Vol 50 (14) ◽  
pp. 3128-3135 ◽  
Author(s):  
Pradip K. Bhowmik ◽  
Haesook Han ◽  
Alexi K. Nedeltchev ◽  
Hari D. Mandal ◽  
Jose A. Jimenez-Hernandez ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Pyridinium Salt ◽  
Aromatic Diamine ◽  
Photoluminescence Properties ◽  
Oxyethylene Unit

Synthesis of Three Novel Aromatic Biazomethine Liquid- Crystalline Epoxy Resins and Curing Reaction with Aromatic Diamine

2011 ◽  
Vol 216 ◽  
pp. 34-38
Author(s):  
Jun Gang Gao ◽  
Xiao Na Zhang ◽  
Yong Gang Du
Keyword(s):  
Melting Point ◽  
Epoxy Resins ◽  
Liquid Crystalline ◽  
Diphenyl Ether ◽  
Hydroxyl Group ◽  
Aromatic Diamine ◽  
Curing Reaction ◽  
Ozawa Equation ◽  
Liquid Crystalline Epoxy ◽  
Clearing Temperature

Three class of novel liquid crystalline epoxy resins containing azomething groups: N,N’-Bis[4-(2,3-epoxypropoxy)benzylidene]-4,4-diamino-diphenyl ether (p-BEPBDDE), N,N’-Bis[4-(2,3-epoxypropoxy)benzylidene]-4,4-diamino-diphenyl methane (p-BEPBDDM) and N,N’-Bis[(4-(2,3-epoxypropoxy)-benzyliden)-1,4- phenylene diamine] (p-BEPBPD) were synthesized and characterized. The results show that p-BEBDDE and p-BEBDDM belong to smectic texture and melting point is 239.5 and 178 oC, respectively. The p-BEPBD is nematic texture between its melting temperature (Tm) of 192 oC and clearing temperature (Ti) of 238 oC. The curing reaction can be described by Ozawa equation, and the alcohol-hydroxyl group can accelerate the curing reaction and decrease Ea in DSC experiment.

Synthesis and characterization of liquid-crystalline ionomers with pendant cholesteryl pyridinium salt mesogens

RSC Advances ◽  
2016 ◽  
Vol 6 (32) ◽  
pp. 26791-26799 ◽  
Author(s):  
Dongyu Zhao ◽  
Lei Zhang ◽  
Lu Bai ◽  
Jingqi Luo ◽  
Xiaozhi He ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Pyridinium Salt ◽  
Synthesis And Characterization

Novel pyridinium-based liquid-crystalline ionomers were synthesized, which showed various mesophases due to the ion aggregations of ionic mesogens.

Synthesis and Characterization of Poly(pyridinium salt)s with Organic Counterions Exhibiting Both Thermotropic Liquid-Crystalline and Light-Emitting Properties

2004 ◽  
Vol 37 (8) ◽  
pp. 2688-2694 ◽  
Author(s):  
Pradip K. Bhowmik ◽  
Haesook Han ◽  
James J. Cebe ◽  
Ivan K. Nedeltchev ◽  
Shin-Woong Kang ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Pyridinium Salt ◽  
Synthesis And Characterization ◽  
Light Emitting
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