A kind of fluorescent/phosphorescent dual-emissive conjugated polyelectrolyte has been prepared by introducing phosphorescent platinum(ii) porphyrin (O2-sensitive) into a fluorene-based (O2-insensitive), which can form ultrasmall polymer dots (FP-Pdots) in the phosphate buffer solution (PBS) via self-assembly caused their amphiphilic structures with hydrophobic backbones and hydrophilic side chains. These FP-Pdots exhibit an excellent ratiometric luminescence response to O2 content high...

The solubilization behavior of nile red dye in aqueous surfactant and micellar solutions was studied by optical spectroscopic techniques, dynamic light scattering, atomic force microscopy. Nile exhibits considerable absorption the submicellar concentration region. When dispersed and/or solution, molecules tend to form nonemissive dimers H-type aggregates through π-π stacking interactions. This phenomenon may limit use studies. In presence ionic SDS CTAB micelles, appears take place primarily...

Molecular oxygen (O 2 ) plays a key role in many physiological processes, and becomes toxicant to kill cells when excited 1 O . Intracellular levels, or the degree of hypoxia, are always viewed as an indicator cancers. Due highly efficient cancer therapy ability low side effect, photodynamic (PDT) one most promising treatments for Herein, early‐stage diagnosis system is reported based on phosphorescent conjugated polymer dots (Pdots) containing Pt(II) porphyrin oxygen‐responsive group...

Oxygen plays a crucial role in many biological processes. Accurate monitoring of oxygen level is important for diagnosis and treatment diseases. Autofluorescence an unavoidable interference luminescent bioimaging, so that amount research work has been devoted to reducing background autofluorescence. Herein, phosphorescent iridium(III) complex‐modified nanoprobe developed, which can monitor concentration also reduce autofluorescence under both downconversion upconversion channels. The...

A novel soft salt based phosphorescent probe has been successfully developed for ratiometric and lifetime imaging of intracellular pH variations in real time.

A multifunctional phosphorescent iridium(<sc>iii</sc>) complex has been synthesized for specific nucleus staining and hypoxia monitoring through time-resolved luminescence imaging.

Abstract A new phosphorescent dinuclear cationic iridium(III) complex ( Ir1 ) with a donor–acceptor–π‐bridge–acceptor–donor (DAπAD)‐conjugated oligomer L1 as N^N ligand and triarylboron compound C^N has been synthesized. The photophysical excited‐state properties of were investigated by UV/Vis absorption spectroscopy, photoluminescence molecular‐orbital calculations, they compared those the mononuclear [Ir(Bpq) 2 (bpy)] + PF 6 − Ir0 ). Compared , shows more‐intense optical‐absorption...

A selective phosphorescent biothiols probe is synthesized based on Ir(III) complex 1, which has 2,2'-biquinoline as the N^N ligand for realizing satisfied two-photon absorption cross-section and two-functionalized 2-phenylpyridine ligands with an α,β-unsaturated ketone moiety thiol reaction site. The one- optical properties of 1 are investigated through UV-vis spectrum photoluminescence spectrum. This can act excellent excited "OFF-ON" 1,4-addition biothiol to ketones. Moreover,...

We design a nanohybrid for the detection of hydrogen sulfide (H2S) based on mesoporous silica nanoparticles (MSNs). A phosphorescent iridium(III) complex and specific H2S-sensitive merocyanine derivative are embedded into nanohybrid. It exhibits unique dual emission that is ascribed to derivative, respectively. Upon addition sodium (NaHS), from quenched, while almost unchanged, which enables ratiometric H2S. Additionally, has long luminescence lifetime displays significant change in response...

We here report on the synthesis of a bifunctional nanocarrier system based amphiphilic hyperbranched polyglycerol (hPG), which is modified by introducing hydrophobic aromatic groups to core and retaining hydrophilic in shell. "Selective chemical differentiation" chemo-enzymatic reaction strategies were used synthesize this new core-shell type nanocarrier. The shows an innovative carrier capacity with both polymeric unimolecular micelle-like transport properties. Hydrophobic guest molecules...

Abstract New iridium tetrazolate complexes containing o ‐, m or p ‐carboranyl substitution in different positions of a phenylpyridine ligand have been prepared. The carborane isomers and the effect their position tuning optical properties examined. neutral with carboranyl substituent on phenyl ring meta relative to metal exhibit redshifted emission bands contrast blueshifts for those para position. All cationic display evidently blueshifted dual‐peak compared carborane‐free complex (c‐ TZ )...

Amphiphilic dual brush diblock as well symmetrical triblock polymers were synthesized by the overlay of reversible addition−fragmentation chain transfer (RAFT) and nitroxide mediated polymerization (NMP) techniques. While poly(ethylene glycol) brushes served hydrophilic block, hydrophobic block was made polystyrene brushes. The resulting "giant surfactants" correspond structurally to established amphiphilic copolymer known macrosurfactants. aggregation behavior novel in aqueous solution...

Molecular brush diblock copolymers were synthesized by the orthogonal overlay of RAFT (reversible addition–fragmentation chain transfer), ATRP (atom transfer radical polymerization), and NMP (nitroxide-mediated polymerization) techniques. This unique combination enabled synthesis complex amphiphilic polymers without need postpolymerization modifications, using a copolymer intermediate made from two selectively addressable inimers applying sequence four controlled free polymerization steps in...

A two-channel phosphorescent nanosensor has been designed for use in ratiometric and time-resolved luminescence imaging of intracellular F⁻.

A water-soluble tetraphenylethene derivative (TPE-ONa) was developed for luminescent carbon dioxide detection in aqueous solution and porous film, which is able to monitor the variation of external CO₂concentration living cells.

Abstract Dendritic core–shell architectures which are based on hyperbranched polyglycerol for the solubilization of hydrophobic drugs have been synthesized and characterized. The core has modified with biphenyl groups or perfluorinated chains to increase hydrophobicity macromolecules. These amphiphilic type were then used solubilize pyrene, nile red, a perfluoro tagged diazo dye, as well drug nimodipine in water. Specific host–guest interactions such fluorous–fluorous could be tailored by...

Time-resolved luminescence imaging of intracellular oxygen levels has been demonstrated based on long-lived phosphorescent signal. A dinuclear iridium(III) complex Ir1 designed and synthesized, which exhibits excellent optical properties, such as high quantum yields, large Stokes shift, photostability long emission lifetime. The intensity lifetime are very sensitive to levels. Thus, the application for monitoring realized successfully. Especially, utilizing advantageous Ir1, background...

Thorium is a notable candidate for resolving uranium shortage caused by the global application of nuclear power generation. Uranium extraction from seawater another attempt to handle its source deficiency, however, vanadium one main competitive elements in that process. Exploration probes which can discriminatively detect thorium and has primary significance their further separation environmental protection. Herein, N′-(2,4-dihydroxybenzylidene)-4-hydroxylphenylhydrazide, AOH, used as sensor...

The combination of two techniques controlled free radical polymerization, namely the reversible addition fragmentation chain transfer (RAFT) and atom polymerization (ATRP) techniques, together with use a macromonomer allowed synthesis symmetrical triblock copolymers, designed as amphiphilic dual brushes. One type brush was made poly(n-butyl acrylate) soft hydrophobic block, i.e. characterized by low glass transition temperature, while other one hydrophilic poly(ethylene glycol) (PEG). new...

A new concept of phosphorescence switch and logic gate has been proposed based on iridium(<sc>iii</sc>) complexes containing triarylboron moieties.