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DTSTAMP:20260411T191015
DTSTART:20180205T113000
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URL:https://murmitoyen.com/events/vanille/udem/detail/805491-connecting-mol
 ecular-design-with-mesoscale-properties-in-polymer
LOCATION:Pavillon Roger-Gaudry \, 2900\, boul. Édouard-Montpetit\, Local M
 -415\, Montréal\, QC\, Canada
SUMMARY:Connecting Molecular Design with Mesoscale Properties in Polymer
DESCRIPTION:Séminaire avec Colin Bridges\, University of California\, Sant
 a Barbara
\nRésumé :Electroactive carbon based polymers are central to m
 any nascent green technologies including energy efficient lighting\, photo
 voltaics\, energy storage\, and semiconductors. The unit cell\, size\, fra
 ction\, and orientation of crystallites in polymer electronics can vastly 
 influence the electronic properties. As such\, gaining control over both s
 hort and long-range molecular ordering is vital for understanding and opti
 mizing how these devices function. Liquid crystalline conjugated polymers 
 are attractive systems for this since they exhibit high fidelity ordering\
 , their structure is in equilibrium\, and the molecular alignment is readi
 ly propagated from molecular to macroscopic length scales. I will discuss 
 how amphiphilicity between the polymer backbone and side-chain can influen
 ce the formation and structure of liquid crystalline mesophases in semicon
 ducting polymers. I will also explore how sidechain design can be leverage
 d to control unit cell and intermolecular interactions. These molecular fe
 atures are correlated with macroscopic features such as alignment propagat
 ion\, and the electronic properties of polymer transistors. These findings
  are used to establish molecular design rules governing mesoscale properti
 es\, and represent a general approach to allow the expression and alignmen
 t of lyotropic liquid crystalline mesophases in conjugated polymers
\nAffi
 che de la conférence
\n   
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