分核化学上经由包含三伸乙基四氨(TETA ) 的分隔符以一种单层方式在玻璃板表面上被装配子单元。这部电影的荧光排放对 nitroaromatic 化合物(NAC ) 的踪迹数量的存在敏感,这被表明了蒸汽。是在现在的工作发现了, pyrene-functionalized 电影的反应选择取决于分隔符,给定的 NAC 的蒸汽压力,和 quencher 尺寸的长度。这部电影显示出更快的反应到那些熄灭有更高的蒸汽压力和更小的尺寸的 ers。与更短的分隔符作比较到这部电影,有更长灵活的分隔符的现在的电影显示出更慢的回答到 NAC,而是更高的选择到 quencher 尺寸。另外,察觉在蒸汽阶段, 2,4,6 强烈炸药(TNT ) 和 2,4-dinitrotoluene (DNT ) 限制到普通炸药,是 7.14 × 1 0 −12 和 5.49 × 1 0 −11 g · m L −1, 分别地。进一步的考试显示察觉到的进程是充分可逆的,并且象苯,甲苯,乙醇,和香水那样的那些普通干扰的蒸汽在这部电影的察觉到的表演之上有小效果。
Pyrene was chemically assembled on a glass plate surface in a monolayer manner via spacers containing triethylenetetramine (TETA) subunits. It has been demonstrated that the fluorescence emission of the film is sensitive to the presence of trace amount of nitroaromatic compound (NAC) vapors. As discovered in the present work, the response selectivity of the pyrene-functionalized film depends on the length of the spacer, the vapor pressure of a given NAC, and the quencher size. The film shows faster response to those quenchers which have higher vapor pressure and smaller size. Compared to the film with shorter spacers, the present film with longer flexible spacers shows a slower response to the NACs, but higher selectivity to the quencher size. Additionally, the detection limits to common ex- plosives in vapor phase, 2,4,6-trinitrotoluene (TNT) and 2,4-dinitrotoluene (DNT), are 7.14×10^-12 and 5.49×10^-11 g·mL^-1, respectively. Further examinations indicated that the sensing process is fully reversible, and the vapors of those common interference such as benzene, toluene, ethanol, and perfume have little effect upon the sensing performances of the film.