Fluorescent Organic Glass with Unique Optical and Mechanical Properties

Abstract

Conventional organic glasses such as molecular and polymeric glasses either lack processability or have ill-defined properties. Here, a novel organic glass is reported having well-defined fluorescent properties and high compatibility with various fabrication processes. The fluorescent organic glass (FOG) is synthesized by simply heating benzyl alcohol with a small amount of aqueous sulfuric acid. Owing to its outstanding optical properties, FOG is placed beyond the domain of conventional organic glasses in the Abbe diagram. Moreover, excellent rheological properties render it amenable to molding, blowing, and nanopatterning processes. Finally, based on extensive characterization, it is proposed that a FOG is composed of a 1,2,3,4-tetraphenyl-1,3-butadiene core and poly(phenylene methylene) branches, which are responsible for molecular fluorescence and polymeric processability, respectively. The demonstration may contribute significantly to the development of organic glasses with unprecedented properties for various applications.

Zero‐Dimensional Luminescent Metal Halide Hybrids Enabling Bulk Transparent Medium as Large‐Area X‐Ray Scintillators

“…Based on the Rayleigh scattering principle, it is known that smaller grain size (in nano level) can favorably reduce the scattering of the incident light (Figure 2g). Due to the crystallization behavior of (ETP) 2 MnBr 4 nanocrystals during the molten-quenching process, the resultant solidified medium from molten ETPBr and MnBr 2 mixture exhibited high transmittance in the wavelength range from 500 to 800 nm (>80%) (Figure 2h), [29] implying its great applicable perspectives in high-resolution X-ray imaging applications, as will be discussed below.…”

Bulk transparent supramolecular glass enabled by host–guest molecular recognition

“…It was found that MH is amorphous (Supplementary Figs. 13,14), because only broad peaks at around 10 and 20 degrees were observed from its powder X-ray diffraction spectra 50 . Meanwhile, no peaks were found in the small angle X-ray scattering spectra (Supplementary Fig.…”

“…The development of artificial glass has been regarded as a significant milestone in the long history of transparent materials. With advancements in polymer science, organic glass, which originates from covalently linked polymers, has become indispensable for various applications [13][14][15] . Currently, inorganic and organic materials are two classes of the most extensively used transparent materials 16 .…”

Correlation of Structure with Crystalline to Amorphous Phase Transitions of 1,3,6-Substituted Fulvene-Derived Molecular Glasses

“…For example, amorphous solid dispersions, drug formulations composed of active pharmaceutical ingredients dispersed in an amorphous glassy matrix, have been shown to improve important variables of biological drug efficacy such as transport and dissolution. − The value of the glassy state has also been exploited for incorporating liquid crystal mesogens into low molecular weight matrices for information storage materials . Randomly organized, glassy materials have also been used as host matrices to lock in chromophore guests in the design of optoelectronic materials. − More recently, small molecules have been designed for well-defined fluorescent glasses, nonlinear optics, charge transporting devices, and radioluminescence . Related to fulvenes of interest to this work, it has been reported that 1,2,3,4-tetraphenyl substituted fulvenes exhibited T g ’s of over 100 °C, and correlate with the nature of the 6-substituent (Figure ).…”

“…15 Randomly organized, glassy materials have also been used as host matrices to lock in chromophore guests in the design of optoelectronic materials. 16−18 More recently, small molecules have been designed for well-defined fluorescent glasses, 19 nonlinear optics, 20 charge transporting devices, 21 and radioluminescence. 22 Related to fulvenes of interest to this work, it has been reported that 1,2,3,4-tetraphenyl substituted fulvenes exhibited T g 's of over 100 °C, and correlate with the nature of the 6-substituent (Figure 1).…”