2001年9月14日 · The 2,5-dihydroxybenzoic acid (DHB), well known as one of the most efficient matrix-assisted laser desorption ionization (MALDI) matrices, was photoionized at different irradiances of a UV laser.

1997年12月1日 · MALDI spectra of 2,5-DHB protein-doped single crystals using both ultraviolet (UV) and infrared (IR) laser irradiation and of SA protein-doped single crystals using IR laser irradiation are shown. For 2,5-DHB, the MALDI mass spectra were obtained from different crystal faces; for SA, the degree of protein incorporation into the matrix crystals ...

2023年8月1日 · We probed neutral 2,5-dihydroxy benzoic acid (DHB) crystals in the matrix-assisted laser desorption/ionization (MALDI) plume using ultraviolet (UV) laser post-ionization at 266 nm to investigate the initial MALDI process involving fast phase transitions.

尽管 2,5-二羟基苯甲酸 (dhb) 是一种成熟的 maldi 基质，但这种异构体是否适合脂质分析的问题尚未得到解决。 测定了所有六种 DHB 异构体的紫外吸收并记录了它们的激光解吸光谱。

2023年11月28日 · 我们的结果表明，DHT 表现出强紫外可见光 (UV-vis) 吸收、均匀的基质沉积和高真空稳定性。 此外，与常用的 2,5-二羟基苯甲酸 (DHB) 和 α-氰基-4-羟基肉桂酸基质相比，DHT 产生的基质相关离子信号在m / z < 500 时分别减少了 50% 和 71.8%（ CHCA)，分别在各自的有机 …

2022年9月22日 · In this study, we evaluated and optimized a new solid ionic matrix—O-benzylhydroxylamine (BOA)/2,5-dihydroxybenzoic acid (DHB)/Na—containing BOA and a small amount of sodium as the counter salt of DHB. The concentration of a mixture of BOA/DHB/Na and glycans on a MALDI target plate led to O-benzyloxy tagging of the reducing ends of the glycans.

In this study, we evaluated and optimized a new solid ionic matrix— O -benzylhydroxylamine (BOA)/2,5-dihydroxybenzoic acid (DHB)/Na—containing BOA and a small amount of sodium as the counter salt of DHB. The concentration of a mixture of BOA/DHB/Na and glycans on a MALDI target plate led to O -benzyloxy tagging of the reducing ends of the glycans.

2022年10月19日 · In this study, we evaluated and optimized a new solid ionic matrix-O-benzylhydroxylamine (BOA)/2,5-dihydroxybenzoic acid (DHB)/Na-containing BOA and a small amount of sodium as the counter salt of DHB.

2024年1月3日 · A supramolecular assembly was successfully constructed by 2-amino-5-bromo-3-methylpyridine (ABMP) and 2,4-dihydroxybenzoic acid (DHB) through N+–H⋯O−, N–H⋯O and O–H⋯O hydrogen bonding interactions.

2006年9月20日 · Although 2,5-dihydroxybenzoic acid (DHB) is an established MALDI matrix, the question whether just this isomer is ideal for lipid analysis was not yet addressed. UV absorptions of all six DHB isomers were determined and their laser desorption spectra recorded.