Herein, the temperature-dependent fluorescence properties of a hexacatenar liquid crystalline (LC) molecule composed of naphthalenyl and 1,2,3-triazolyl linkers are reported. This molecule exhibited a bluish emission in its crystalline and LC phases under UV-irradiation. According to the obtained photoluminescence (PL) and lifetime data, the emission originated from excimer formation of the naphthalenyl units. Morphological analyses indicated the face-to-face stacking of the naphthalenyl units in the orthorhombic crystalline (Cry_ortho) and helical columnar LC (Col_hel) structures. This packing mode was used to rationalize the excimer emission from the PL data. As temperature increased to 100 °C, the PL intensity gradually decreased. Interestingly, it dropped abruptly at 100 °C in the LC temperature range. Dielectric relaxation spectroscopic analysis indicated that molecular reorientation allowing full rotational motion was initially activated at 100 °C. The sudden variation in the rotational rigidity was associated with triazolyl hydrogen-bonding, which affected the emission intensity.

在本文中，报道了由萘基和1,2,3-三唑基接头组成的六邻苯二酚液晶（LC）分子的温度依赖性荧光性质。在紫外线照射下，该分子在其结晶相和LC相中均显示出蓝色发光。根据获得的光致发光（PL）和寿命数据，该发射源自萘单元的受激准分子形成。形态分析表明，正交晶体（Cry _ortho）和螺旋柱状LC（Col _hel）中萘单元的面对面堆积）结构。该打包模式用于根据PL数据合理化准分子发射。随着温度升高至100°C，PL强度逐渐降低。有趣的是，它在LC温度范围内于100°C突然下降。介电弛豫光谱分析表明，允许完全旋转运动的分子重新定向最初是在100°C下激活的。旋转刚度的突然变化与三唑基氢键有关，这影响了发射强度。