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Solvent-Dependent Light-Induced Structures in Gem-Dichlorocyclopropanated Polybutadiene Solutions.
The Journal of Physical Chemistry B ( IF 2.8 ) Pub Date : 2018-06-27 , DOI: 10.1021/acs.jpcb.8b02463 A Bogris 1, 2 , J Wang 3 , M Anyfantakis 4 , B Loppinet 1 , S L Craig 5 , H-J Butt 6 , G Fytas 1, 6
The Journal of Physical Chemistry B ( IF 2.8 ) Pub Date : 2018-06-27 , DOI: 10.1021/acs.jpcb.8b02463 A Bogris 1, 2 , J Wang 3 , M Anyfantakis 4 , B Loppinet 1 , S L Craig 5 , H-J Butt 6 , G Fytas 1, 6
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The formation of permanent structures upon mild red laser illumination in transparent polydiene solutions is examined in the case of gem-dichlorocyclopropanated polybutadiene ( gDCC-PB) polymers bearing 15% functional units of the dichlorocyclopropane groups. The response was found to be distinct from the precursor PB. Whereas fiber-like patterns were clearly observed in both precursor and gDCC-PB solutions in cyclohexane, these were absent in the case of gDCC-PB/chloroform but were present in the precursor PB/chloroform solutions. The involved mechanical stresses were not sufficient for the gDCC activation to be detected by NMR spectroscopy. Remarkably, addition of even 10 wt % gDCC-PB into the latter solution sufficed to suppress the light-induced patterning. The importance of the chemical environment on the response to light irradiation was further checked and confirmed by use of other PB copolymers. Different diameter patterns and kinetics were observed. The strong solvent and comonomer mediated effect was reflected neither in solvency nor in optical polarizability differences of the polymers solvent couples.
中文翻译：
宝石-二氯环丙烷化的聚丁二烯溶液中溶剂依赖性的光诱导结构。
在带有二氯环丙烷基团的15％官能团的宝石-二氯环丙烷化的聚丁二烯（gDCC-PB）聚合物的情况下，检查了在透明的聚二烯溶液中在柔和的红色激光照射下形成的永久结构。发现该响应不同于前体PB。尽管在前体和gDCC-PB溶液在环己烷中均清楚地观察到纤维状图案，但在gDCC-PB /氯仿的情况下不存在，但存在于前体PB /氯仿溶液中。所涉及的机械应力不足以通过NMR光谱检测到gDCC活化。显着地，即使将10重量％的gDCC-PB添加到后一种溶液中也足以抑制光诱导的图案化。通过使用其他PB共聚物进一步检查和确认了化学环境对光照射的响应的重要性。观察到不同的直径模式和动力学。强烈的溶剂和共聚单体介导的作用既没有反映在聚合物溶剂对的溶解能力方面，也没有反映在光学极化率方面。
更新日期：2018-06-28
中文翻译：
宝石-二氯环丙烷化的聚丁二烯溶液中溶剂依赖性的光诱导结构。
在带有二氯环丙烷基团的15％官能团的宝石-二氯环丙烷化的聚丁二烯（gDCC-PB）聚合物的情况下，检查了在透明的聚二烯溶液中在柔和的红色激光照射下形成的永久结构。发现该响应不同于前体PB。尽管在前体和gDCC-PB溶液在环己烷中均清楚地观察到纤维状图案，但在gDCC-PB /氯仿的情况下不存在，但存在于前体PB /氯仿溶液中。所涉及的机械应力不足以通过NMR光谱检测到gDCC活化。显着地，即使将10重量％的gDCC-PB添加到后一种溶液中也足以抑制光诱导的图案化。通过使用其他PB共聚物进一步检查和确认了化学环境对光照射的响应的重要性。观察到不同的直径模式和动力学。强烈的溶剂和共聚单体介导的作用既没有反映在聚合物溶剂对的溶解能力方面，也没有反映在光学极化率方面。
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