Recent Advances of Polymer‐Based Pure Organic Room Temperature Phosphorescent Materials

Abstract

Room temperature phosphorescence (RTP) has attracted broad attention due to their long lifetimes, large Stokes shift, and widespread applications. Achieving RTP emission has long been a challenging task under common conditions, for the necessary requirements of promoting intersystem crossing processes and suppressing nonradiative transitions are always tough to meet. Over the past decade, RTP has been obtained through several specific strategies, among which an important method lies in immobilizing phosphors into polymer matrices. Via the effect of steric overcrowding exerted by the polymeric structures, the phosphorescence of the initial phosphors can be promoted significantly. Hence, polymer‐based pure organic materials have proved to be one newly emerging subject in the field of RTP materials. In this review article, the progresses of polymer‐based pure organic room temperature phosphorescent materials are elaborated from four main approaches, including doped polymer systems, copolymer systems, homopolymer systems, and host–guest complexation systems, whereby the design principles, synthesis methods, possible mechanisms, and applications are summarized and discussed in detail.

Information Storage Based on Stimuli‐Responsive Fluorescent 3D Code Materials

“…For example, phosphorescent materials always have time-dependent emission decay after ceasing the excitation source. [105,106] Compared to fluorescence, the decay time of phosphorescence is relatively longer, which usually can be captured by naked eyes. [107] Additionally, some stimuli-responsive fluorescent materials can also demonstrate color transformations with the extension of stimuli time.…”

Macrocyclic Photoinitiator Based on Prism[5]arene Matching LEDs Light with Low Migration

“…Photopolymerization refers to the process in which monomers are polymerized to polymers under the irradiation of light or high-energy irradiation (mainly electron beams). [1][2][3] This technology has been widely used in many fields, such as coating, adhesive, 3D curing, photoresist, dental medical materials, and others. [4][5][6][7] Photoinitiators play an important role in photopolymerization.…”

Room Temperature Phosphorescent (RTP) Thermoplastic Elastomers with Dual and Variable RTP Emission, Photo‐Patterning Memory Effect, and Dynamic Deformation RTP Response

“…As we know, general polymers are characteristic of excellent strength, toughness, and process‐ability, thus, it is very meaningful and necessary to develop long‐lived RTP polymers, and recently, an increasing interest in such RTP polymers is emerging and has advanced relevant development and understanding. [ 18 , 19 , 20 , 21 ]…”

“…As we know, general polymers are characteristic of excellent strength, toughness, and process-ability, thus, it is very meaningful and necessary to develop long-lived RTP polymers, and recently, an increasing interest in such RTP polymers is emerging and has advanced relevant development and understanding. [18][19][20][21] However, the existing commercial polymers are basically nonphosphorescent especially at room temperature. To obtain RTP polymers, introduction of triplet chromophores and suppression of non-radiative relaxation are two key factors in enhancing RTP.…”