Efficient Separation of Conjugated Polymers Using a Water Soluble Glycoprotein Matrix: From Fluorescence Materials to Light Emitting Devices

Abstract

Optically active bio-composite blends of conjugated polymers or oligomers are fabricated by complexing them with bovine submaxilliary mucin (BSM) protein. The BSM matrix is exploited to host hydrophobic extended conjugated π-systems and to prevent undesirable aggregation and render such materials water soluble. This method allows tuning the emission color of solutions and films from the basic colors to the technologically challenging white emission. Furthermore, electrically driven light emitting biological devices are prepared and operated.

Investigation of the pH‐dependence of dye‐doped protein–protein interactions

“…studies. 16,17,20 Thus, the R dye aggregates strongly in aqueous solutions which is manifested by its quenching [Fig. 2(A)], while no aggregates are observed in the complexed PGM solution [ Fig.…”

“…2,3 Since that, a conformational study on particular type may be generalized to the entire mucin family. 4 A member of this family, the Pig Gastric Mucin (PGM) is glycoprotein which belongs to the membrane and extracellular secreted proteins family with high molecular weight (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20). PGM structure is comprised of many repeating building blocks which consist of rich glycosylated oligosaccharide chains that make up approximately 80% of PGM Mw that is arranged in 5-15 oligosaccharide's of fucose, galactose, Nacetylgalactosamine, Nacetylglucosamine, and mannose.…”

“…We have previously suggested that incorporating light-emitting dyes in this compound can lead to formation of controllable light-emitting solid coatings which might be used for non-biological applications such as a backlight coating for Liquid crystal displays and organic light-emitting diodes (OLEDs). 16,17 One should note that obtaining white emission by means of appropriate phosphorous coating of blue LED is important since it will allow replacing the commonly used incandescent light bulbs and fluorescent tubes with much more efficient and cheap LEDs. Moreover, the ability to tune the exact color of the emission is needed for the LED market, since both warm (red-rich) and cold (blue-rich) white LEDs are used in different markets.…”

“…Since PGM can complex hydrophobic molecules in aqueous solution, 20 full solubilization of the two dyes is achieved. 16,17 This simple technique allows us to explore the folding mechanism by simple monitoring of the R and G fluorescence spectra and demonstrate a white light luminescence both in solution and on and in solid non-woven matrix of gelatin-PCL nanofibers placed on blue LED. .…”

Stable White Light‐Emitting Biocomposite Films

“…In previous studies, we demonstrated a new paradigm facing the current WLED fabrication challenges. We suggested exploiting natures' ability to form many types of stable and controllable host–guest systems to reduce the unwanted nonradiative energy transfer mechanisms in dyes which are in close proximity.…”