»ù±¾ÊÍÒå:

½ü¾§ÖнéÏà

ÍøÂçÊÍÒå

1)smectic mesophase,½ü¾§ÖнéÏà

2)smectic mesophase,½ü¾§×´ÖмäÏà(Òº¾§)

3)smectic phase,½ü¾§Ïà

4)smectic,½ü¾§Ïà

5)smectic A phase,½ü¾§AÏà

6)semetic C phase,½ü¾§CÏà

Ó÷¨ºÍÀý¾ä

The results showed that M1 and M2 present the enantiotropic nematic phase,M3 presents the nematic phase with SA,SC and SB smectic phases and M4 presents the nematic phase with SA,SC and SB monotropic phases.

´ËÍâ,¶Ë»ùÈáÐԽϺõĻ¯ºÏÎïÇãÏòÓÚÐγɽü¾§Ïà¡£

The results showed that they all had a smectic phase and some of them had a chiral smectic C phase (Scª¬*) near room temperature.

Òº¾§ÐÔÖʲâÊÔ½á¹û±íÃ÷ËüÃǶ¼Êǽü¾§ÏàÒº¾§£¬ÓÐЩ»¹ÓжàÏàÐÔ¡£

Polarized light microscopy and differential scanning calorimetry reveal DNC 18DCl3T and DNC 18DI3T exhibit smectic A phase, whereas DNC 8DCl3T and DNC 8DI3T do not form liquid crystal phase.

²îʾɨÃèÁ¿ÈÈ·¨ÒÔ¼°Æ«¹âÏÔ΢¾µ¹Û²ì½á¹ûÏÔʾ ,DNC18DCl3TºÍDNC18DI3T¾ßÓÐÒº¾§ÐÔ ,Ðγɽü¾§AÏàÒº¾§¡£