BPLPs

BPLP HD 8 CUBPLP fluorescent, enhanced mechanical properties vascular graft, bioimaging [48]... 

For all the hydrophobic polymers, like POC, BPLP, POCM, POC-DA, POMaC, POCclick, 1,8-octanediol, and citric acid, that composed the main chain backbone of the polymers, functional diols or polyols were used as additional monomers. 

Pendent modification refers to the modification of the pendent functional groups on citrate-based prepolymers. The modification can be conducted concurrently with (BPLP, WBPLP, and iCMBA) or after... 

Here, polymers are the final cross-linked polymers, except for BPLP, WBPLP, and BPLP-LA. The full names of polymer abbreviations are listed as follows POC, polyf 1, 8-octanediol citrate) PEGMC, poIy(poIy(ethyIene glycol) maleate citrate) BPLP, biodegradable photoluminescentpolymer WBPLP, water-soluble BPLP iCMBA, injectable citrate-based mussel-inspired bioadhesive CUPE, cross-linked... 

Second, the modification of the pendent functionality of CABEs through reactions with amines or amino acids was developed, which can proceed concurrently or after the polycondensation of various CABE polymers, such as BPLP [2,20,21], iCMBA [22,23], and cross-linked meth-... 

Third the chain extension through reacting with chain extenders such as 1,6-hexamethylene diisocyanate (HDl) was also developed. Such strategy has resulted in cross-linked urethane-doped polyester elastomers (CUPEs) based on POC [19], cross-linked urethane-doped BPLP (CUBPLP)... 

This can also happen through initiating lactones ROP based on BPLP polymers to form fluorescent polylactone, BPLP-polylactone (BPLPL) (unpublished) (Table 16.2). 

Among BPLPs, BPLP-cysteine (BPLP-Cys, using L-cysteine) and BPLP-serine (BPLP-Ser, using L-serine) display the best fluorescent properties in terms of fluorescence intensity and quantum yield. The quantum yield of BPLP-Cys can be as high as 62.3% (Figure 16.5) [20]. 

FIGURE 16.5 Emission spectra of BPLP-Cys (left) and BPLP-Ser (right) solution (in 1,4-dioxane) at diffaent excitation wavelengths [21] photograph of 1, 4-dioxane, BPLP-Cys, and POC in the presence of an ultraviolet light source (middle). 

Chain extension often refers to the postmodification of one polymer by using a chain extender (such as diisocyanate) or initiating a second polymerization by the polymer itself. In CABEs, the syntheses of CUPE and BPLPL copolymers such as BPLP-PLA are classified as chain extension reactions and will be discussed in the following sections. 

CABEs citrate-based biodegradable elastomers CABEs can be POC, BPLP, POMaC or POMC... 

FIGURE 16.9 (a) Ruorescent image of BPLP-Ser najioparticles injected subcutaneously in a nude mouse (b) fluorescent image of BPLP-Ser porous... 

To meet this unmet need in regenerative tissue engineering, a breakthrough was recently made in developing soft and elastic biodegradable photoluminescent polymers (BPLPs) with mnable and in vivo detectable fluorescence with emission from... 

Figure 4.10 Synthesis and properties of BPLP and biodegradable BPLP-based biodegradable waterborne polyurethane (BPLP-WPU). (a) Synthesis of BPLP. (b) Structure and application of BPLP-WPU. (c) Emission spectra of BPLP-WPU excited at wavelengths of 335, 365, 380, 425,455, and 485 nm. (d) Particle size distribution of BPLP-WPU dispersed in water.

---