Full-wood photoluminescent and photothermic materials for thermal energy storage

Self-carbonization synthesis of highly-bright red/near-infrared carbon dots by solvent-free method

“…As with external H 2 SO 4 , spontaneous H 2 SO 4 from -HSO 3 groups affects the solution's acidity and alkalinity; acidic and basic conditions affect the protonation and deprotonation of -NH 2 during the synthesis of R-CDs; protonated -NH 2 is more easily doped into the carbon-core, whereas deprotonated -NH 2 facilitates the detachment of -NH 2 from the benzene ring to form free ammonia, which is not favorable for the formation of graphitized N. Thus, -HSO 3 groups, similar to external H 2 SO 4 , catalyzes the polymerization of 3,4-DBSA, which then selfcarbonizes to form CDs as a result of H 2 SO 4 's dehydrogenation effect. 7,51,52 3.2. Solid-phase synthesis and characterization of R-CDs from sole raw material (3,4-DBSA) by self-carbonization After demonstrating the self-carbonization effect of -HSO 3 groups, we apply it to the solid-phase synthesis of R-CDs.…”

“…Due to their high tissue penetration, [1][2][3][4][5][6][7][8][9] low photodamage, [10][11][12][13] and negligible auto-fluorescence interference, [14][15][16][17] red/nearinfrared carbon dots (R-CDs) have a wide range of applications in biophotonics and biosensing.…”

Luminescent and Hydrophobic Wood Films as Optical Lighting Materials

“…These characteristics may limit their application, as complex shapes and uniform light distribution are desirable to create a comfortable environment. Embedding organic dye molecules or quantum dots in transparent wood composites enables the conversion of incident light into other emission wavelengths, allowing generation of various colors. − Despite these tremendous efforts, wood-based optical materials are still impregnated with petroleum-based polymers and, hence, not environmentally friendly. Although, highly desirable for optical applications, a polymer matrix-free, strong and flexible optical wood material with isotropic light scattering and light conversion performance has not been reported yet.…”

Recent Progress in Luminous Particle‐Encapsulated Host–Guest Metal‐Organic Frameworks for Optical Applications

“…Since the first discovery of carbon dots in 2004 during the purification of single-walled carbon nanotubes by Scrivens et al, [120] extensive attention have been paid to this new type of promising carbon materials. Compared to perovskites, CDs not only have the advantages of stable photoluminescence, oversimplified preparation, and excellent resistance to photobleaching, [121,122] but also feature the concentrated hypotoxicity, [123][124][125] lowcost, [126] favorable biocompatibility, [121,127] extensive source of raw materials, [128] excellent water stability, [129][130][131] and especially high QY. [132] In addition, CDs exhibit unique tunable photoluminescence by controlling the chemical structure, size, shape, functional groups, and heteroatomic doping, with a broadband photoluminescence from deep ultraviolet (DUV) to NIR.…”