PurposeTo examine benzoporphyrin derivative angiography as a modality for studying photosensitizer biodistribution in experimental choroidal melanomas.

Photodynamic therapy (PDT) is an effective non-ionizing treatment modality that is currently being used for various malignant and non-malignant diseases. In type II PDT with photosensitizers such as benzoporphyrin monoacid ring A (BPD), cell death is based on the creation of singlet oxygen (1O2)...

The B-ring benzoporphyrin derivative B3B has been studied for its applications in Photodynamic Therapy. Its protolytic species were fully optimized in water and ethanol by Density Functional Theory based on B3LYP hybrid functional and 6-311G(d,p) basis set. All of its species were found to be th...

Several phosphorescent platinum(II) and palladium(II) complexes of tetrapyrrole dyes are prepared in an attempt to improve the compatibility with red laser diodes. The nature of meso-substituents in benzoporphyrin macrocycle is found to affect mainly the position of the Soret band and has little...

4,5,6,7-Tetrafluoroisoindole and their related compounds were prepared directly from the corresponding phthalonitriles by reduction of a hydride reagent such as DIBAL or catalytic hydrogenation in the presence of an acid. 4,5,6,7-Tetrafluoroisoindole was converted to fluorinated benzoporphyrins.

New robust optical sensors for measurement of low oxygen concentrations are presented. The simple synthesis of a new Pt(II) and Pd(II)-benzoporphyrin indicator and the subsequent modification via Suzuki-coupling to introduce reactive styrene groups are shown. These indicators have excellent phot...

New platinum(II) and palladium(II) complexes with fluorinated benzoporphyrins are prepared and characterized. The photo-physical and electrochemical properties, as well as quenching by oxygen are investigated. The complexes possess highly efficient room-temperature NIR phosphorescence and are ex...

Benzoporphyrins 5 and 6 are the major products obtained from the cycloaddition reactions of β-fused metallo-pyrroloporphyrins 1 and 2 with dimethyl acetylenedicarboxylate. In the presence of excess dienophile a bis-adduct is also obtained which undergoes retro-Diels-Alder reaction to produce 5....

In this study we attempted to develop Pluronic micelles delivering the photodynamic therapy photosensitizers benzoporphyrin derivatives (BPD). The BPD A-ring (BPDMA or Verteporfin®, the active drug of FDA/USA approved Visudyne®), its regioisomer ring-B (BPDMB, not used in Visudyne® formulation d...

Complexes of benzoporphyrins are highly promising for application in optical oxygen sensors, as triplet sensitizers for generation of singlet oxygen and upconversion based on triplet-triplet annihilation (TTA). Particularly, they benefit from efficient absorption in red part of the spectrum and ...

PI3K/Akt/mTOR signaling pathway plays an important role in cancer cell growth and survival. In this study, a new class of molecules with skeleton of 4-phenyl-2H-benzo[b] [1,4]oxazin-3(4H)-one were designed and synthesized targeting this pathway. Bioassays showed that, among all the molecules, 8d...

This review summarizes recent developments in the preparation and characterization of grafting of poly(lactic acid) or polylactide (PLA). PLA is the most expansively researched and utilized biodegradable, biocompatible, compostable, recyclable and renewable thermoplastic polyester. The graft cop...

3D nanostructured inorganic materials appear as promising candidates for various practical applications. Here we focus on metal nanofoams, a class of 3D nanomaterials uniquely combining the properties of metals and nanoporous materials, and review the recent developments in their preparation met...

The past decade has witnessed great advancement in the design and synthesis of endogenous stimuli-responsive (ESR) block copolymers in biomedical applications, especially for the intracellular delivery of therapeutic agents. The recent research focus has been on the improvement of targetability ...

To develop potent and safer formulation of photosensitizer for cancer photodynamic therapy (PDT), we tried to formulate hydrophobic porphyrin derivative, photoprotoporphyrin IX dimethyl ester (PppIX-DME), into polymeric nanoparticles composed of polyethylene glycol and polylactic acid block copo...

A superhydrophobic porous film was fabricated by a simple phase separation process between a polyhedral oligomeric silsesquioxane (POSS) based diblock polymer (P) and polyethylene glycol (PEG) in selective solvents. The POSS-based hybrid diblock polymer was synthesized using a two-step atom tran...

This paper describes an investigation of the in vitro degradation of some polyethylene oxide/polylactic acid block copolymers. It has been found that the faster the degradation, the more basic the incubation medium and, as expected, the higher the temperature. The addition of enzyme proved to ha...

Recently, biodegradable block copolymers (BBCs) have gained enormous interest to be used for various biomedical purposes, such as drug delivery, gene delivery, tissue engineering, diagnosis, theragnosis etc. These BBCs utilize components such as poly(ethylene glycol), PEG; poly(d, l-lactic acid-...

Well-controlled polystyrene-polymethacrylate bottlebrush block copolymers (BBCPs) of ultrahigh molecular weight using ω-end-norbornyl polystyrene as the macromonomer for the first block were synthesized by combining living anionic polymerization (LAP) and ring-opening metathesis polymerization ...

Advances in polymer synthetic approaches have significantly enhanced the ability to rationally design the block copolymers with tailor-made functionality and variable molecular weight. Hence, block copolymers have been extensively applied in the formulation of nanostructure materials. Owing to t...