不同的银表面上系列氨基苯甲酸的吸附行为的差别(英文)

分别以覆银的干燥滤纸和银胶溶液中的银纳米颗粒为基底,对苯甲酸的一系列氨基取代物[n -ABA(n =P ,M和O) ]进行了表面增强拉曼散射(SERS)的研究,发现PABA在两种基底上的SERS光谱差别较大,而MABA和OABA则不然,我们分析了可能的原因     

Induced Crystal‐G Phase through Intermolecular Hydrogen Bonding Part XIV: Influence of Alkyl Carbons of p‐Hydroxybenzoates on Phase Distribution of Induced Phase

Two novel series of intermolecular hydrogen‐bonded liquid crystal complexes resulting from equimolar combinations of p‐n‐alkoxybenzoic acids (nABA) (where n represents alkoxy carbon numbers 3 to10 and 12) and non‐mesogens viz. ethyl‐p‐hydroxybenzoate (EHB) and propyl‐p‐hydroxybenzoate (PHB) have been synthesized. The formation and stabilization of the hydrogen bonding is confirmed by infrared spectral study, which reveals the terminal functionalities, ‐COOH and ‐OH moieties are complementary to each other by acting as both proton donor and acceptor. The results of comparative thermal and phase analyses of both the series are discussed in conjunction with free‐ p‐n‐alkoxybenzoic acids. The induction of crystal‐G phase with wide thermal spans is observed in the present complexes.