Kuo Chi-Ching, Tung Yi-Chih, Chen Wen-Chang
Institute of Polymer Science and Engineering, National Taiwan University, Taipei 106, Taiwan.
Macromol Rapid Commun. 2010 Jan 4;31(1):65-70. doi: 10.1002/marc.200900566. Epub 2009 Nov 18.
New luminescent electrospun (ES) fibers for pH-tunable colorimetric sensors were prepared from binary blends of poly(phenylquinoline)-block-polystyrene (PPQ-b-PS)/polystyrene (PS) with a single-capillary spinneret. The PPQ-b-PS aggregated domain sizes in the ES fibers prepared from dichloromethane (CH(2) Cl(2) ), chlorobenzene (CB) and chloroform (CHCl(3) ) were 1.5 ± 0.5, 2.2 ± 0.4 and 4.1 ± 1.1 µm, respectively. Such variation on the aggregation size led to the red-shifting photoluminescence spectra changing from green, to yellow, and orange. ES fibers prepared from CH(2) Cl(2) exhibited pH-tunable photoluminescence and the emission maximum varied from 532 to 560 nm as the pH value changed from 7 to 1. The study demonstrated that the ES fibers prepared could have potential applications for sensory devices.
采用单毛细管喷丝头，由聚（苯基喹啉）-嵌段-聚苯乙烯（PPQ-b-PS）/聚苯乙烯（PS）的二元共混物制备了用于pH可调比色传感器的新型发光电纺（ES）纤维。由二氯甲烷（CH₂Cl₂）、氯苯（CB）和氯仿（CHCl₃）制备的ES纤维中PPQ-b-PS聚集域尺寸分别为1.5±0.5、2.2±0.4和4.1±1.1μm。聚集尺寸的这种变化导致光致发光光谱从绿色变为黄色再变为橙色的红移。由CH₂Cl₂制备的ES纤维表现出pH可调的光致发光，随着pH值从7变为1，发射最大值从532nm变化到560nm。该研究表明，所制备的ES纤维在传感装置方面可能具有潜在应用。
