Conformational transition-induced simultaneous fluorescence enhancement of oxytetracycline and rhodamine B under a single excitation wavelength

Abstract

Since the abuse of antibiotic oxytetracycline (OTC) poses a serious threaten to environment and human health, it is of great importance to develop sensitive fluorescent probes for its rapid and...

Photomechanical properties in metal–organic crystals

“…This study suggests that changing the solvent during synthesis can lead to photomechanical effects in crystals. 48 Photomechanical behaviors like cracking and popping have been investigated in block-like crystals. In addition, the inclusion of photoresponsive crystals within a polyvinylidene fluoride (PVDF) polymer could turn this motion into the controlled macroscale motion of shaped films.…”

“…With the advantages of the reversibility of [4+4] cycloaddition processes and preferred pÁ Á Áp stacking method, the anthracene derivative has become one of the most appealing photoreactive groups for topochemical polymerization. Yu and coworkers developed a 1D CP [Zn(9-AC) 2 (4,4 0bipy)(CH 3 OH) 2 ] (H9-AC = 9-anthracenecarboxylic acid and 4,4 0bipy = 4,4 0 -bipyridine), which undergoes [4+4] photodimerization reactions, resulting in geometric changes to individual crystals 48. Photomechanical behaviors like cracking and popping have been investigated in block-like crystals.…”

A dual-functional 2D coordination polymer exhibiting photomechanical and electrically conductive behaviours

“…[19][20][21][22][23][24][25][26][27] Herein, single crystals exhibit different photomechanical behaviours, such as jumping, splitting or bursting, swelling, rolling and flipping, once irradiated with UV light, which is termed as the photosalient (PS) effect. [28][29][30][31][32][33][34][35] Reasons for the photosalient effect include low photoconversion in densely packed molecular crystals, poor light absorption across a crystal, competing (isotropic) directionality of structure change in many molecules in each crystal, and crystal size effects. The key factor in inducing such a mechanical motion in single crystals is to provide a welldefined anisotropy within the crystals.…”

Rapid and Visual Detection of Oxytetracycline Using Mesoporous Silica Nanochannels Modified Interdigital Electrode

“…2 However, the abuse of antibiotics has posed negative effects on the quality of animal foods, further resulting in side effects on human health, including allergic reactions, liver damage, nephrotoxicity, gastrointestinal problems and the resistance toward antibiotics. 3 Up to now, various analytical techniques have been established for the detection of OTC in biological samples, namely high performance liquid chromatography (HPLC), 4,5 liquid chromatography-mass spectrometry (LC-MS), [6][7][8] fluorescence methods, [9][10][11] and enzyme-linked immunosorbent assay (ELISA). 12,13 Though sensitive and accurate detection has been achieved by these conventional procedures, they encountered a number of limitations, such as high cost, time-consuming, elaborate processing steps, and requirement of well-equipped laboratory and professional expertise, which are not suitable for rapid on-site detection.…”