Cross-Linked Luminescent Polymers Based on β-Diketone-Modified Polysiloxanes and Organoeuropiumsiloxanes

Abstract

Nowadays, luminescent materials attract wide attention due to their valuable characteristics and broad area of potential application. Luminescent silicone-based polymers possess unique properties, such as flexibility, hydrophobicity, thermal and chemical stabilities, etc., which allow them to be utilized in various fields, such as optoelectronics, solid-state lasers, luminescent solar concentrators, sensors, and others. In the present work, a metal-ligand interaction approach was applied to obtain new cross-linked luminescent polymers based on multiligand polysiloxanes with grafted β-diketone fragments and organoeuropiumsiloxanes containing various organic substituents. Organoeuropiumsiloxanes were utilized as a source of Eu3+ ions due to their compatibility with the silicon matrix. All synthesized polymers were fully characterized and their physicochemical, mechanical, self-healing, optical, and thermal properties were studied.

Polydimethylsiloxanes with Grafted Dibenzoylmethanatoboron Difluoride: Synthesis and Properties

“…Polydimethylsiloxanes (PDMSs) with grafted dibenzoylmethanatoboron difluoride (DBMBF 2 ) were prepared according to Scheme 1 . Initial PDMSs with distributed silylhydride groups 1 a,b were synthesized using the method described earlier by us [ 9 ] and had the following molecular characteristics: 1 a : M n = 31,800 Da, M w = 47,000 Da, PDI = 1.5. 1 b : M n = 30,800 Da, M w = 47,200 Da, PDI = 1.5.…”

“…Polysiloxanes with distributed silylhydride groups 1 a,b were prepared using the method described earlier by us [ 9 ].…”

“…Along with organic fluorophores, inorganic luminescent complexes are also used in combination with polysiloxane matrices. Thus, luminescent polysiloxanes can possess self-healing properties [ 9 , 10 , 11 , 12 ], be applied in photonics [ 13 , 14 , 15 ], and as sensing devices for detecting nitroaromatic compounds [ 16 ], oxygen [ 17 , 18 ] or ammonia [ 9 ]. There are many examples of luminescent silicone materials based on lanthanide complexes with numerous ligands [ 19 , 20 , 21 , 22 ].…”

Self-Healing Silicone Materials: Looking Back and Moving Forward

“…In general, silicone rubbers with SH ability have broad applications in nanotechnology, optoelectronics, biomedicine, soft robotics and human activity [ 11 , 13 , 14 , 15 , 16 , 17 ]. Various protective coatings with a long service life [ 9 , 26 , 27 , 53 , 54 , 110 , 120 , 125 , 139 , 144 , 145 ], electromagnetic shielding films [ 57 , 99 ], triboelectric nanogenerators [ 126 , 130 ], sensors and skin-inspired electronics [ 49 , 101 , 118 , 124 , 127 , 129 , 131 , 134 , 136 , 141 , 143 , 144 , 146 , 147 , 148 , 149 ], actuators and artificial muscles [ 8 , 44 , 66 , 107 , 118 , 126 , 147 , 148 , 150 ], separating membranes [ 151 ], liquid crystals [ 152 ], and flexible and stretchable luminescent and electroluminescent devices […”

“…Recently, SHSMs have been used as sensors, especially strain sensors and wearable electronic sensors [ 49 , 61 , 101 , 118 , 124 , 129 , 130 , 131 , 134 , 136 , 141 , 143 , 147 , 148 , 157 ], pressure sensors [ 127 , 130 ], pH- and chemosensors [ 144 , 146 ].…”