A novel pyrene-containing fluorescent organogel derived from a quinoline-based fluorescent porbe: synthesis, sensing properties, and its aggregation behavior
A novel pyrene-containing fluorescent organogel derived from a quinoline-based fluorescent porbe: synthesis, sensing properties, and its aggregation behavior
作者:Chang-Bo Huang、Li-Jun Chen、Junhai Huang、Lin Xu
DOI:10.1039/c4ra02373k
日期:——
A new family of pyrene-containing compounds 2–4 derived from aminoquinoline-containing fluorescent probe 1 were successfully synthesized and well characterized. The investigation of the absorption and emission spectra of these compounds revealed that the photophysical properties were significantly affected by the substitution of pyrene. Moreover, these compounds exhibited selective fluorescence behaviour towards Zn2+ in aqueous solution. The gelation properties of these compounds were investigated by the “stable to inversion of a test tube” method. Interestingly, 1,8-bis-substituted compound 4 displayed stable gel-formation properties in acetone, dioxane, tetrahydrofuran, ethyl acetate, chloroform, and dichloromethane. The morphologies of the xerogels were investigated by scanning electron microscopy (SEM) and laser scanning confocal microscopy (LSCM). The concentration- and temperature-dependent emission properties, and concentration- and temperature-variable 1H NMR spectroscopy of compound 4 were investigated, which suggested that both π–π stacking interaction and hydrogen bonding were the driving forces for the process of self-aggregation and the gel formation. In addition, studies on the luminescence properties indicated that 4 had the ability to form a fluorescent organogel with interesting fluorescence behaviour. More importantly, it was found that compound 4 could form a stimuli-responsive gel that had a sensitive gel-to-sol transition response to heating or adding Zn2+.
Preparation of a hyperbranched porous polymer and its sensing performance for nitroaromatics
作者:Hongtao Wu、He Xu、Furong Tao、Xi Su、William W. Yu、Tianduo Li、Yuezhi Cui
DOI:10.1039/c8nj01881b
日期:——
A hyperbranched porous polymer P based on adamantane and pyrene was synthesized through the Sonogashira coupling reaction. The quenching efficiency (ηEP) of film P in saturated DNT vapour reached 82% due to its 3D structure.
Synthesis of Novel Optically Active Poly(phenyleneethynylene–aryleneethynylene)s Bearing Hydroxy Groups. Examination of the Chiroptical Properties and Conjugation Length
作者:Hiromitsu Sogawa、Yu Miyagi、Masashi Shiotsuki、Fumio Sanda
DOI:10.1021/ma401730e
日期:2013.11.26
Novel optically active poly(phenyleneethynylene-aryleneethynylene)sbearing hydroxy groups with various arylene units [poly(1–2), poly(1–3a), poly(1–3b), poly(1–4)] were synthesized by the Sonogashira–Hagihara coupling polymerization of (S)-3,5-diiodo-4-hydroxy-C6H4CONHCH(CH3)COOC12H25 (1) with HC≡C–Ar–C≡CH [2 (Ar = 1,4-phenylene), 3a (Ar = 2,7-naphthylene), 3b (Ar = 1,4-naphthylene) and 4 (Ar = 1
Cyclopent[fg]acepyrylene, cyclopent[jk]acepyryiene and cyclopent[mn]acepyrylene: novel C20H10 cyclopenta-fused polycyclic aromatic hydrocarbons
作者:Martin Sarobe、Simon Flink、Leonardus W. Jenneskens、Bart L. A. van Poecke、Jan W. Zwikker
DOI:10.1039/c39950002415
日期:——
Flash vacuum thermolysis of 1, 8-(2a), 1,6-(2b) and 1,3-bis(1-chloroethenyl)pyrene (2c) gives the novel C20H10 cyclopenta-fused Polycyclic Aromatic Hydrocarbons (CP-PAHs) cyclopent[fg]-(1a), cyclopent[jk]-(1b) and cyclopent[mn]acepyrylene (1c), respectively; bis(cyclopenta-fusion) topology has a profound influence on their properties.
Design and Preparation of Platinum-Acetylide Organogelators Containing Ethynyl-Pyrene Moieties as the Main Skeleton
作者:Xing-Dong Xu、Jing Zhang、Xudong Yu、Li-Jun Chen、De-Xian Wang、Tao Yi、Fuyou Li、Hai-Bo Yang
DOI:10.1002/chem.201202902
日期:2012.12.7
A series of new platinum‐acetylide complexes containing ethynyl‐pyrene moieties as the mainskeleton were synthesized and characterized. The investigation of the absorption and emission spectra of these complexes revealed that the extension of the molecular size with the introduction of different numbered platinum‐acetylide fragments can efficiently tune the absorption and emission bands from the UV