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Synthesis and characterization of liquid crystals containing a non-activated 1',3',3'-trimethylspiro\[2H-1-benzopyran-2,2-indoline] group

 

作者: SUSAN SWANSBURG,   YOON-KI CHOI,   SAM-ROK KEUM,   ERWIN BUNCEL,   ROBERT P. LEMIEUX,  

 

期刊: Liquid Crystals  （Taylor Available online 1998）
卷期: Volume 24, issue 3  

页码: 341-346

 

ISSN:0267-8292

 

年代: 1998

 

DOI:10.1080/026782998207145

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

Two series of mesogens derived from the non-activated spiropyran dyes 6-hydroxy-1,3,3-trimethylspiro\[2H -1-benzopyran-2,2-indoline] (series trimethylspiro\[2 H -1-benzopyran-2,2-indoline] (series 2) have been synthesized. Analysis by differential scanning calorimetry, polarizing microscopy and X-ray diffraction showed compounds in series 1 form monotropic nematic and SmA phases, while compounds in series 2 form only a monotropic nematic phase.

 

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