Additional file 1: of Pneumonia caused by extensive drug-resistant Acinetobacter baumannii among hospitalized patients: genetic relationships, risk factors and mortality

52 Isolates were tested against antibiotics by disc diffusion. All 52 of the isolates were tested against a panel of antibiotics with the disc diffusion method, as recommended by the Clinical and Laboratory Standards Institute (CLSI;M100-S22, 2012) [17], to determine the resistance phenotype. Multidrug resistance (MDR) was defined as acquired non-susceptibility to at least one agent in three or more antimicrobial categories, and extensive drug resistance (XDR) was defined as resistance to all available antibiotics except colistin and tigecycline [5]. GFPH, Guangzhou First People’s Hospital; FAH, the First Affiliated Hospital of Sun Yat-sen University; TAH, the Third Affiliated Hospital of Sun Yat-sen University; R, resistance; S, sensitivity; I, intermediate; PB, polymyxin B (300 units); TGC, tigecycline (15 μg); IPM, imipenem (10 μg); AK, amikacin (30 μg); TOB, tobramycin (10 μg); MEM, meropenem (10 μg); TZP, piperacillin/tazobactam (100∕10 μg); SCF, cefoperazone/sulbactam (70∕35 μg); CAZ, ceftazidime (30 μg); CRO, ceftriaxone (30 μg); FEP, cefepime (30 μg); ATM, aztreonam (30 μg); LEV, levofloxacin (5 μg); CIP, ciprofloxacin (5 μg); DO, doxycycline (30 μg). (DOCX 24 kb

Regulating Phosphorescence Lifetime of Organic Cocrystals by Alkyl Engineering

Phosphorescent cocrystal is one of the emerging room-temperature phosphorescence (RTP) materials. However, it remains a great challenge to understand the relationship between the phosphorescent properties and molecular aggregation. Herein, we prepared a series of organic cocrystals with RTP features composed of different alkyl chain lengths. It is worth noting that the phosphorescent lifetime varied by the different lengths of alkyl chains. For melamine–succinic acid cocrystal, the phosphorescence lifetime can reach up to 512 ms. From the single-crystal analysis, the longer lifetime was mainly attributed to the shorter distance of molecular stacking between phosphorescent chromophores resulting in smaller free volume. This study not only provides a simple method to prepare RTP materials but also explores the relationship between phosphorescent properties and molecular stacking in organic phosphorescent cocrystals