Shubert V Alvin, Zwier Timothy S
J Phys Chem A. 2007 Dec 27;111(51):13283-6. doi: 10.1021/jp0775606. Epub 2007 Nov 30.
A new technique, IR-IR-UV hole-burning, is reported for obtaining conformation specific IR spectra when the electronic spectra are too closely overlapped to obtain clean spectra free from interference from other conformations via standard ion dip or fluorescence dip methods. The 4'-aminobenzo-15-crown-5 ether-(HDO) complex is used as an example, on which the method was applied to prove the presence of two conformations having overlapped electronic spectra and to assign IR transitions belonging to the same conformation.
据报道，当电子光谱重叠过于紧密，无法通过标准离子偶极或荧光偶极方法获得不受其他构象干扰的纯净光谱时，一种名为红外-红外-紫外空穴烧蚀的新技术可用于获得构象特异性红外光谱。以4'-氨基苯并-15-冠-5醚-（重水）配合物为例，应用该方法证明了存在两种电子光谱重叠的构象，并归属了属于同一构象的红外跃迁。
