Positive and negative fluorescent imaging induced by naphthalimide polymers

Synthesis and Photophysical Investigations of Novel Polymerizable Blue Emitting Fluorophores – Combination of a Hindered Amine with a Benzo[de]isoquinoline‐1,3‐dione

“…Fluorescent benzo[de]isoquinoline-1,3-dione derivatives due to their good spectral properties have found application in a number of areas including laser active media, [1,2] potential photosensitive biologically units, [3] fluorescent markers in biology, [4] analgesics in medicine, [5] light emitting diodes, [6][7][8] photo-induced electron sensors, [9][10][11][12][13] fluorescence switchers, [14] electroluminescent materials, [15][16][17] liquid crystal displays [18][19][20] and ion probes. [21] The comparatively low molecular mass of the benzo[de]isoquinoline-1,3-dione dyes as well as their high photostability and intensive fluorescence makes these dyes preferable to other types of disperse and covalently bound dyes for coloration of polymers.…”

Fluorescent logic systems for sensing and molecular computation: structure–activity relationships in edge-detection

“…We can recognize this as straightforward positive photography. Indeed, 25 Tian's team previously observed this effect with 1 and a polymeric version of 6 following baking, 45 which is the common practice in industrial photolithography. 46 As the writing is continued, the orange fluorescent square image gains in intensity until 4 min and then undergoes a decline.…”

“…He was the common ancestor of you and me. 45 Just as edge detection saved the day for our hero long ago, it also looks after us on a daily basis 29,30 everytime any object approaches us at moderate speeds. 31 Edge detection is a deepseated survival routine within us all.…”

“…Some quantitative analysis was made by obtaining fluorescence intensity -length graphs along a line through the centre of the square and parallel to a quasi-horizontal side. Green (for 5 and 6) and red (for 2 and 3) channel data are 45 employed. These graphs (Figure 8) allow the estimation of the widths of the visualized edges to be 0.8 -1.8 mm.…”

Facile synthesis of 4-nitro-N-substituted-1,8-naphthalimide derivatives using ultrasound in aqueous media

“…Because of their strong fluorescence and good photostability, 1,8-naphthalimide derivatives have found applications in a number of areas such as in the coloration of polymer (1, 2) as laser-active media (3), fluorescent markers in biology (4), anticancer agents (5), lightemitting diodes (6,7), photoinduced electron-transfer sensors (8,9), fluorescence switchers (10,11), electroluminescent materials (12,13), liquid-crystal displays (14,15), and ion probes (16).…”