Characterization of PT layer's photothermal conversion. NIR-II light was provided by a pumped solid-state laser (30 W, Ningbo Yuanming laser Co.). The ambient temperature was kept at 25 °C in ...Web

The NIR photothermal conversion property of Cs 0.33 WO 3 nanoparticles was investigated in deionized water at different concentrations. The aqueous dispersion of Cs 0.33 WO 3 nanoparticles …Web

In the hybrid MoO 3 –POM structures, all the four kinds of MoO 3 –POM HSNSs showed strong NIR light absorption and highly efficient photothermal conversion (Figure 5g–i). Among them, the MoO …Web

where η stands for photothermal conversion efficiency, h is the heat transfer coefficient, S is the surface area of cuvette exposed to laser irradiation.T max and T surr stand for the temperature reached at thermal equilibrium state and the surrounding temperature, respectively. Q DI stands for the energy input from deionized water in the …Web

DOI: 10.1039/d3sc03532h The twisted TCPDA component induces rapid charge recombination, while the distorted con guration in fi TTF TCPDA favors an internal non-radiative pathway. This research has provided a comprehensive – understanding of the …Web

Upon exposure to near-infrared (NIR) laser, NIR-absorbing agents with high photothermal conversion efficiency can produce hyperthermia to promote cancer-cell apoptosis 4,5,6.Web

The NIR irradiation conditions are essentially an external field applied to nanomaterials and biological structures, and the intensity, duration, area, and form of irradiation are directly related to the efficiency of photothermal conversion, inflammatory response, and damage to normal cells and tissues caused by irradiation with AuNRs …Web

Near-infrared (NIR) photothermal materials convert absorbed NIR light into thermal energy by inhibiting the radiative relaxation of materials 1,2.Because of the deep penetration ability and dark ...Web

With both TTF˙ + radicals and Ag NPs, Ag NPs@Dy-m-TTFTB was shown to exhibit a wide range of absorption wavelengths (200–1000 nm) and also a high NIR photothermal conversion. When the system was irradiated with an 808 nm laser (energy power of 0.7 W cm −2 ), Ag NPs@Dy- m -TTFTB showed a sharp temperature increase …Web

Photothermal therapy (PTT) has been widely applied in cancer therapy as a result of its non-invasive, localized treatment and good therapeutic effect. In general, the final therapeutic effect of PTT mainly depends on the photothermal materials, which can be further considered to be determined by the photothe Journal of Materials Chemistry B …Web

Based on superhigh NIR-II photothermal conversion efficiency of 87.7% which is far beyond the reported PTT agents, we further demonstrated that TTB-2 NPs can achieve good tumor suppression and photoacoustic (PA) imaging performance in vitro and in vivo upon NIR-II light illustration. Moreover, combined with PD-1 treatment, TTB-2 NPs …Web

A notable example of CuS photothermal materials is the synthesis of 3D flower-like CuS superstructures which exhibited high NIR photothermal conversion efficiency. 72 The CuS superstructures can rapidly convert 980 nm laser energy into thermal energy, leading to an increase in the temperature of CuS superstructure …Web

In principle, the photothermal conversion process of NIR-II molecules can be described using eqn (1), Q = I 0 × (1 − 10 A) × ϕ IC (1) where Q is the heating power based on the photothermal conversion and I 0 is the light intensity. The photothermal conversion consists of two processes, including light absorption (A) and nonWeb

Realizing precise temperature regulation under low constant near-infrared (NIR) laser density is of great significance for the clinical application of photothermal therapy. However, photo-modulated …Web

Based on superhigh NIR-II photothermal conversion efficiency of 87.7% which is far beyond the reported PTT agents, we further demonstrated that TTB-2 NPs can achieve good tumor suppression and photoacoustic (PA) imaging performance in vitro and in vivo upon NIR-II light illustration. Moreover, combined with PD-1 treatment, TTB-2 NPs …Web

The as-prepared DPP has broadband absorption (550–700 nm), high optical absorption extinction coefficient (46.8 L/(g cm)), and high photothermal conversion efficiency (Supplementary Fig. 8, 48.4 ...Web

To meet practical requirements of high photothermal conversion efficiency (PCE), considerable endeavors have been devoted to increasing absorption ability from ultraviolet (UV) to near-infrared (NIR) region, especially second NIR (NIR-II) region.Web

Carbon dots are zero-dimensional nanomaterials that have garnered significant research interest due to their distinct optical properties, biocompatibility, low fabrication cost, and eco-friendliness. Recently, …Web

We report a supramolecular naphthalene diimide (NDI) radical anion with efficient NIR-II photothermal conversion for E. coli-responsive photothermal therapy.The supramolecular radical anion (NDI-2CB[7])⋅ −, which is obtained from the E. coli-induced in situ reduction of NDI-2CB[7] neutral complex, formed by the host–guest interaction …Web

The absorption cross section and photothermal conversion efficiency of AuNCs could also be measured by leveraging the temperature-caused volumetric expansion of a fluidic medium in a simple optofluidic device. …Web

Small-molecule photothermal agents (PTAs) with intense second near-infrared (NIR-II, 1,000 to 1,700 nm) absorption and high photothermal conversion efficiencies (PCEs) are promising candidates for treating deep …Web

Recent years, photothermal therapy (PTT), employing tumor site targeted photothermal conversion nanomaterials to convert light energy into heat under near-infrared (NIR) light irradiation to kill tumor cells, has been recognized to be an effective and minimally invasive therapeutic strategy for treating primary tumors. 37, 38 By local ...Web

Photothermal therapy (PTT) has attracted great attention in recent years as it can enable the conversion of near-infrared (NIR) laser into thermal energy to ablate tumor cells. It is a spatiotemporally controllable treatment strategy and possesses good specificity for minimal damage to surrounding healthy tissues [1], [2], [3].Web

Specifically, an ideal photothermal agent would have the specific tumor-targeting ability and high photothermal conversion efficiency (PCE) without absorption disturbance from the chromophores in biological tissue. The development of photothermal agents that meet these requirements has accelerated with the advancement of PTT …Web

The conversion ability of the inorganic NIR-II PTAs from light to heat is another key factor to determine the photothermal performance. Boosting the photothermal conversion ability results in the generation of greater amount of heat from the same amount of absorbed light energy. Methods to boost the photothermal conversion are listed below.Web

1. Introduction. The development of nanomaterials capable of effectively absorbing near-infrared (NIR) radiation with a broad working waveband has increasingly attracted attention from the viewpoint of energy economization for applications in photothermal therapy, solar collectors, smart windows, and optical filters [1,2,3].Solar …Web

Though these molecules had been successfully applied for NIR-II PTT, the photothermal conversion efficiency still needed to be improved. Very recently, an NIR-II photothermal agent IR-SS was developed via Se-tailoring strategy. 156 By introducing two Se atoms into the BBT acceptor skeleton, a pronounced red-shift in absorption could be …Web