Glyco Property List
Pooled literature properties (glycanDB). Optional filters: ?dataset=uv_vis&property_key=...
GET /api/gdd/glyco-properties/?format=api&page=41
{ "count": 839, "next": "http://glycodata.org/api/gdd/glyco-properties/?format=api&page=42", "previous": "http://glycodata.org/api/gdd/glyco-properties/?format=api&page=40", "results": [ { "id": 801, "dataset": "uv_vis", "entity": "methyl 3-azido-2,3-dideoxy-β-D-ribo-hexopyranoside (BRN3OMe)", "entity_group": "nitro/amino-sugar glycoside", "entity_class": "carbohydrate derivative/glycoside", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "286", "unit": "nm", "value_reported": "286", "unit_reported": "nm", "method": "Experiment", "method_detail": "UV-vis absorption spectrum of the nitro/azido/amino sugar glycoside (Fig. 6).", "conditions": "azido/amino-sugar chromophore; pi-pi*; water", "conditions_detail": "UV-vis absorption spectrum of the nitro/azido/amino sugar glycoside (Fig. 6). | solvent: water | chromophore: azido/amino-sugar chromophore | transition: pi-pi*", "doi": "10.1021/acs.jpcb.4c08136", "source_url": "https://doi.org/10.1021/acs.jpcb.4c08136", "year": "2025", "confidence": "high", "comments": "\"The methyl 3-azide anomers were characterized by two absorption bands at 282 and 272 nm for ARN3OMe and 286 and 266 nm for BRN3OMe.\" — pH of solution changes band positions/intensities (see paper). [Dąbrowska AM, Kaźmierkiewicz R, Barabaś-Lepak AM, Biedulska M, Chylewska A, 2025, Comprehensive Chemical Analysis of the Methyl 3-Nitrogen-2,3-Dideoxysaccharides Derivatives with d-<i>ribo</i>-Configuration: Synthesis, Reactivity of HIV-1 Reverse Transcriptase Inhibitors.; confidence: high]" }, { "id": 802, "dataset": "uv_vis", "entity": "methyl 3-azido-2,3-dideoxy-β-D-ribo-hexopyranoside (BRN3OMe)", "entity_group": "nitro/amino-sugar glycoside", "entity_class": "carbohydrate derivative/glycoside", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "266", "unit": "nm", "value_reported": "266", "unit_reported": "nm", "method": "Experiment", "method_detail": "UV-vis absorption spectrum of the nitro/azido/amino sugar glycoside (Fig. 6).", "conditions": "azido/amino-sugar chromophore; pi-pi*; water", "conditions_detail": "UV-vis absorption spectrum of the nitro/azido/amino sugar glycoside (Fig. 6). | solvent: water | chromophore: azido/amino-sugar chromophore | transition: pi-pi*", "doi": "10.1021/acs.jpcb.4c08136", "source_url": "https://doi.org/10.1021/acs.jpcb.4c08136", "year": "2025", "confidence": "high", "comments": "\"The methyl 3-azide anomers were characterized by two absorption bands at 282 and 272 nm for ARN3OMe and 286 and 266 nm for BRN3OMe.\" — pH of solution changes band positions/intensities (see paper). [Dąbrowska AM, Kaźmierkiewicz R, Barabaś-Lepak AM, Biedulska M, Chylewska A, 2025, Comprehensive Chemical Analysis of the Methyl 3-Nitrogen-2,3-Dideoxysaccharides Derivatives with d-<i>ribo</i>-Configuration: Synthesis, Reactivity of HIV-1 Reverse Transcriptase Inhibitors.; confidence: high]" }, { "id": 803, "dataset": "uv_vis", "entity": "methyl 3-amino-2,3-dideoxy-α-D-ribo-hexopyranoside (ARNH2OMe)", "entity_group": "nitro/amino-sugar glycoside", "entity_class": "carbohydrate derivative/glycoside", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "350", "unit": "nm", "value_reported": "350", "unit_reported": "nm", "method": "Experiment", "method_detail": "UV-vis absorption spectrum of the nitro/azido/amino sugar glycoside (Fig. 6).", "conditions": "azido/amino-sugar chromophore; pi-pi*; water", "conditions_detail": "UV-vis absorption spectrum of the nitro/azido/amino sugar glycoside (Fig. 6). | solvent: water | chromophore: azido/amino-sugar chromophore | transition: pi-pi*", "doi": "10.1021/acs.jpcb.4c08136", "source_url": "https://doi.org/10.1021/acs.jpcb.4c08136", "year": "2025", "confidence": "high", "comments": "\"Thus, the 3-amine derivatives are characterized by three absorption bands at 350, 314, and 288 nm in the case of ARNH2OMe and 306, 292, and 268 nm in the case of BRNH2OMe.\" — pH of solution changes band positions/intensities (see paper). [Dąbrowska AM, Kaźmierkiewicz R, Barabaś-Lepak AM, Biedulska M, Chylewska A, 2025, Comprehensive Chemical Analysis of the Methyl 3-Nitrogen-2,3-Dideoxysaccharides Derivatives with d-<i>ribo</i>-Configuration: Synthesis, Reactivity of HIV-1 Reverse Transcriptase Inhibitors.; confidence: high]" }, { "id": 804, "dataset": "uv_vis", "entity": "methyl 3-amino-2,3-dideoxy-α-D-ribo-hexopyranoside (ARNH2OMe)", "entity_group": "nitro/amino-sugar glycoside", "entity_class": "carbohydrate derivative/glycoside", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "314", "unit": "nm", "value_reported": "314", "unit_reported": "nm", "method": "Experiment", "method_detail": "UV-vis absorption spectrum of the nitro/azido/amino sugar glycoside (Fig. 6).", "conditions": "azido/amino-sugar chromophore; pi-pi*; water", "conditions_detail": "UV-vis absorption spectrum of the nitro/azido/amino sugar glycoside (Fig. 6). | solvent: water | chromophore: azido/amino-sugar chromophore | transition: pi-pi*", "doi": "10.1021/acs.jpcb.4c08136", "source_url": "https://doi.org/10.1021/acs.jpcb.4c08136", "year": "2025", "confidence": "high", "comments": "\"Thus, the 3-amine derivatives are characterized by three absorption bands at 350, 314, and 288 nm in the case of ARNH2OMe and 306, 292, and 268 nm in the case of BRNH2OMe.\" — pH of solution changes band positions/intensities (see paper). [Dąbrowska AM, Kaźmierkiewicz R, Barabaś-Lepak AM, Biedulska M, Chylewska A, 2025, Comprehensive Chemical Analysis of the Methyl 3-Nitrogen-2,3-Dideoxysaccharides Derivatives with d-<i>ribo</i>-Configuration: Synthesis, Reactivity of HIV-1 Reverse Transcriptase Inhibitors.; confidence: high]" }, { "id": 805, "dataset": "uv_vis", "entity": "methyl 3-amino-2,3-dideoxy-α-D-ribo-hexopyranoside (ARNH2OMe)", "entity_group": "nitro/amino-sugar glycoside", "entity_class": "carbohydrate derivative/glycoside", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "288", "unit": "nm", "value_reported": "288", "unit_reported": "nm", "method": "Experiment", "method_detail": "UV-vis absorption spectrum of the nitro/azido/amino sugar glycoside (Fig. 6).", "conditions": "azido/amino-sugar chromophore; pi-pi*; water", "conditions_detail": "UV-vis absorption spectrum of the nitro/azido/amino sugar glycoside (Fig. 6). | solvent: water | chromophore: azido/amino-sugar chromophore | transition: pi-pi*", "doi": "10.1021/acs.jpcb.4c08136", "source_url": "https://doi.org/10.1021/acs.jpcb.4c08136", "year": "2025", "confidence": "high", "comments": "\"Thus, the 3-amine derivatives are characterized by three absorption bands at 350, 314, and 288 nm in the case of ARNH2OMe and 306, 292, and 268 nm in the case of BRNH2OMe.\" — pH of solution changes band positions/intensities (see paper). [Dąbrowska AM, Kaźmierkiewicz R, Barabaś-Lepak AM, Biedulska M, Chylewska A, 2025, Comprehensive Chemical Analysis of the Methyl 3-Nitrogen-2,3-Dideoxysaccharides Derivatives with d-<i>ribo</i>-Configuration: Synthesis, Reactivity of HIV-1 Reverse Transcriptase Inhibitors.; confidence: high]" }, { "id": 806, "dataset": "uv_vis", "entity": "methyl 3-amino-2,3-dideoxy-β-D-ribo-hexopyranoside (BRNH2OMe)", "entity_group": "nitro/amino-sugar glycoside", "entity_class": "carbohydrate derivative/glycoside", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "306", "unit": "nm", "value_reported": "306", "unit_reported": "nm", "method": "Experiment", "method_detail": "UV-vis absorption spectrum of the nitro/azido/amino sugar glycoside (Fig. 6).", "conditions": "azido/amino-sugar chromophore; pi-pi*; water", "conditions_detail": "UV-vis absorption spectrum of the nitro/azido/amino sugar glycoside (Fig. 6). | solvent: water | chromophore: azido/amino-sugar chromophore | transition: pi-pi*", "doi": "10.1021/acs.jpcb.4c08136", "source_url": "https://doi.org/10.1021/acs.jpcb.4c08136", "year": "2025", "confidence": "high", "comments": "\"Thus, the 3-amine derivatives are characterized by three absorption bands at 350, 314, and 288 nm in the case of ARNH2OMe and 306, 292, and 268 nm in the case of BRNH2OMe.\" — pH of solution changes band positions/intensities (see paper). [Dąbrowska AM, Kaźmierkiewicz R, Barabaś-Lepak AM, Biedulska M, Chylewska A, 2025, Comprehensive Chemical Analysis of the Methyl 3-Nitrogen-2,3-Dideoxysaccharides Derivatives with d-<i>ribo</i>-Configuration: Synthesis, Reactivity of HIV-1 Reverse Transcriptase Inhibitors.; confidence: high]" }, { "id": 807, "dataset": "uv_vis", "entity": "methyl 3-amino-2,3-dideoxy-β-D-ribo-hexopyranoside (BRNH2OMe)", "entity_group": "nitro/amino-sugar glycoside", "entity_class": "carbohydrate derivative/glycoside", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "292", "unit": "nm", "value_reported": "292", "unit_reported": "nm", "method": "Experiment", "method_detail": "UV-vis absorption spectrum of the nitro/azido/amino sugar glycoside (Fig. 6).", "conditions": "azido/amino-sugar chromophore; pi-pi*; water", "conditions_detail": "UV-vis absorption spectrum of the nitro/azido/amino sugar glycoside (Fig. 6). | solvent: water | chromophore: azido/amino-sugar chromophore | transition: pi-pi*", "doi": "10.1021/acs.jpcb.4c08136", "source_url": "https://doi.org/10.1021/acs.jpcb.4c08136", "year": "2025", "confidence": "high", "comments": "\"Thus, the 3-amine derivatives are characterized by three absorption bands at 350, 314, and 288 nm in the case of ARNH2OMe and 306, 292, and 268 nm in the case of BRNH2OMe.\" — pH of solution changes band positions/intensities (see paper). [Dąbrowska AM, Kaźmierkiewicz R, Barabaś-Lepak AM, Biedulska M, Chylewska A, 2025, Comprehensive Chemical Analysis of the Methyl 3-Nitrogen-2,3-Dideoxysaccharides Derivatives with d-<i>ribo</i>-Configuration: Synthesis, Reactivity of HIV-1 Reverse Transcriptase Inhibitors.; confidence: high]" }, { "id": 808, "dataset": "uv_vis", "entity": "methyl 3-amino-2,3-dideoxy-β-D-ribo-hexopyranoside (BRNH2OMe)", "entity_group": "nitro/amino-sugar glycoside", "entity_class": "carbohydrate derivative/glycoside", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "268", "unit": "nm", "value_reported": "268", "unit_reported": "nm", "method": "Experiment", "method_detail": "UV-vis absorption spectrum of the nitro/azido/amino sugar glycoside (Fig. 6).", "conditions": "azido/amino-sugar chromophore; pi-pi*; water", "conditions_detail": "UV-vis absorption spectrum of the nitro/azido/amino sugar glycoside (Fig. 6). | solvent: water | chromophore: azido/amino-sugar chromophore | transition: pi-pi*", "doi": "10.1021/acs.jpcb.4c08136", "source_url": "https://doi.org/10.1021/acs.jpcb.4c08136", "year": "2025", "confidence": "high", "comments": "\"Thus, the 3-amine derivatives are characterized by three absorption bands at 350, 314, and 288 nm in the case of ARNH2OMe and 306, 292, and 268 nm in the case of BRNH2OMe.\" — pH of solution changes band positions/intensities (see paper). [Dąbrowska AM, Kaźmierkiewicz R, Barabaś-Lepak AM, Biedulska M, Chylewska A, 2025, Comprehensive Chemical Analysis of the Methyl 3-Nitrogen-2,3-Dideoxysaccharides Derivatives with d-<i>ribo</i>-Configuration: Synthesis, Reactivity of HIV-1 Reverse Transcriptase Inhibitors.; confidence: high]" }, { "id": 809, "dataset": "uv_vis", "entity": "xylo-oligosaccharide (XOS)", "entity_group": "xylo-oligosaccharide", "entity_class": "oligosaccharide", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "205", "unit": "nm", "value_reported": "205", "unit_reported": "nm", "method": "Experiment", "method_detail": "Absorbance measured at 205 nm (Maekawa method) using a UV-vis spectrophotometer to quantify XOS.", "conditions": "glycosidic/terminal absorption; aqueous (ion-exchange polished liquor)", "conditions_detail": "Absorbance measured at 205 nm (Maekawa method) using a UV-vis spectrophotometer to quantify XOS. | solvent: aqueous (ion-exchange polished liquor) | chromophore: glycosidic/terminal absorption | source material: oil palm trunk XOS-containing liquor", "doi": "10.1021/acsomega.6c03824", "source_url": "https://doi.org/10.1021/acsomega.6c03824", "year": "2026", "confidence": "high", "comments": "\"Absorbance was measured at 205 nm using a UV–vis spectrophotometer (Shimadzu UV-1800, Japan) with a 1 cm light-path cuvette.\" — 205 nm is the carbohydrate terminal/backbone absorption used for XOS quantification. Same method also reads 280 nm (protein) and 284 nm (aromatic) - NOT carbohydrate. Mass absorptivity 110 L/g cm at 205 nm is a README known-gap (not molar). [Che Engku Chik CEN, Niu Y, Ramli RN, Tan JS, Lee CK, 2026, Sequential Ion-Exchange Polishing of Oil Palm Trunk-Derived XOS-Containing Liquor: Effects of Holding Time and Water Washing on Sugar Recovery and Impurity Removal.; confidence: high]" }, { "id": 810, "dataset": "uv_vis", "entity": "chitosan", "entity_group": "chitosan", "entity_class": "polysaccharide", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "205", "unit": "nm", "value_reported": "200-210", "unit_reported": "nm", "method": "Experiment", "method_detail": "UV-vis spectrum of chitosan alone; absorption primarily 200-210 nm (as reported previously).", "conditions": "amine/amide; n-pi* (amine/amide); aqueous", "conditions_detail": "UV-vis spectrum of chitosan alone; absorption primarily 200-210 nm (as reported previously). | solvent: aqueous | chromophore: amine/amide | transition: n-pi* (amine/amide)", "doi": "10.1021/acsomega.6c03188", "source_url": "https://doi.org/10.1021/acsomega.6c03188", "year": "2026", "confidence": "high", "comments": "\"Catechol showed a characteristic absorption peak at 280 nm in the UV–Vis spectra, whereas chitosan alone displayed absorption primarily in the 200–210 nm range, as reported previously.\" — Range collapses to midpoint 205 nm in value_canonical. The 280 nm band in the same figure is catechol, not chitosan. [Kim SA, Shin HH, Lee JY, Jang SU, Kim K, Jo S, Kim Y, Lee SW, Ryu JH, 2026, Flexible Catechol-Conjugated Chitosan/Gelatin Bilayer Patches for Topical Hemostasis in Laparoscopic Surgery.; confidence: high]" }, { "id": 811, "dataset": "uv_vis", "entity": "cellulose acetate-graft-itaconic acid (CA-g-IA)", "entity_group": "cellulose acetate", "entity_class": "carbohydrate polymer/film", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "265", "unit": "nm", "value_reported": "265", "unit_reported": "nm", "method": "Experiment", "method_detail": "UV/vis spectrum of the CA-g-IA membrane (Fig. 1).", "conditions": "itaconic acid moiety; pi-pi* (itaconate C=C); solid film", "conditions_detail": "UV/vis spectrum of the CA-g-IA membrane (Fig. 1). | solvent: solid film | chromophore: itaconic acid moiety | transition: pi-pi* (itaconate C=C) | sample form: membrane", "doi": "10.3390/membranes16080276", "source_url": "https://doi.org/10.3390/membranes16080276", "year": "2026", "confidence": "high", "comments": "\"The UV/vis spectrum of CA-g-IA exhibited a distinct absorption peak at around λ = 265 nm related to the itaconic acid moieties (Figure 1), as compared to CA, which does not absorb in the UV-vis range.\" — Unmodified cellulose acetate does NOT absorb in the UV-vis range (source states this); the 265 nm band comes from grafted itaconic acid. [Abdel-Naby AS, Abo-Ghonaim SS, Alharthi SN, Alhaddad HH, Mu'azu ND, 2026, Direct Graft Copolymerization of Cellulose Acetate Membrane with Bio-Based Itaconic Acid for Pollutant Removal from Wastewater.; confidence: high]" }, { "id": 812, "dataset": "uv_vis", "entity": "Elaeagnus angustifolia polysaccharide (EAP)", "entity_group": "plant polysaccharide (Elaeagnus)", "entity_class": "polysaccharide", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "200", "unit": "nm", "value_reported": "200", "unit_reported": "nm", "method": "Experiment", "method_detail": "UV absorption spectrum of purified EAP in 200-400 nm range (Fig. 5); strong terminal absorption.", "conditions": "none (terminal/end absorption); water", "conditions_detail": "UV absorption spectrum of purified EAP in 200-400 nm range (Fig. 5); strong terminal absorption. | solvent: water | chromophore: none (terminal/end absorption) | range (nm): 200-400", "doi": "10.3390/foods15132318", "source_url": "https://doi.org/10.3390/foods15132318", "year": "2026", "confidence": "high", "comments": "\"UV Spectral Characterization of Polysaccharide Purity The UV (Figure 5) absorption spectrum of EAP in the 200–400 nm range showed a strong terminal absorption at approximately 200 nm, which is characteristic of polysaccharides.\" — Terminal/end absorption ~200 nm; absence of 260/280 nm peaks indicates low nucleic acid/protein. [Ayideng H, Huang S, Yaermaimaiti B, Nazhaer N, Yasen N, Zeng L, Tayier B, Mulati A, 2026, Extraction, Purification, Structural Characterization, and In Vitro Simulated Digestion of Polysaccharides from <i>Elaeagnus angustifolia</i>.; confidence: high]" }, { "id": 813, "dataset": "uv_vis", "entity": "longan shell polysaccharide (LSP)", "entity_group": "plant polysaccharide (longan)", "entity_class": "polysaccharide", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "200", "unit": "nm", "value_reported": "200", "unit_reported": "nm", "method": "Experiment", "method_detail": "UV-vis spectrum of LSP across the full wavelength range (Fig. 3); typical end absorption.", "conditions": "none (end absorption); water", "conditions_detail": "UV-vis spectrum of LSP across the full wavelength range (Fig. 3); typical end absorption. | solvent: water | chromophore: none (end absorption)", "doi": "10.3390/foods15112041", "source_url": "https://doi.org/10.3390/foods15112041", "year": "2026", "confidence": "high", "comments": "\"The spectra showed typical end absorption at 200 nm, characteristic of polysaccharides, while no prominent absorption peaks were observed at 260 nm or 280 nm, suggesting low levels of nucleic acid and protein residues.\" — End absorption ~200 nm; no 260/280 nm peaks. [Zhang X, Xu P, Yao J, Hou J, Xu Y, Chen H, 2026, Ultrasound-Assisted Deep Eutectic Solvent Three-Phase Partitioning System for Extraction of Polysaccharides from Longan Shell: Process Optimization, Physicochemical Properties, Structural Characterization, and Antioxidant Activities.; confidence: high]" }, { "id": 814, "dataset": "uv_vis", "entity": "Trichosanthes kirilowii polysaccharide (TP)", "entity_group": "plant polysaccharide (Trichosanthes)", "entity_class": "polysaccharide", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "200", "unit": "nm", "value_reported": "200", "unit_reported": "nm", "method": "Experiment", "method_detail": "UV-vis spectrum of TP in the 200-800 nm range (Fig. 1a); strong end absorption of the polysaccharide backbone.", "conditions": "none (end absorption); water", "conditions_detail": "UV-vis spectrum of TP in the 200-800 nm range (Fig. 1a); strong end absorption of the polysaccharide backbone. | solvent: water | chromophore: none (end absorption) | range (nm): 200-800", "doi": "10.1039/d6ra04796c", "source_url": "https://doi.org/10.1039/d6ra04796c", "year": "2026", "confidence": "high", "comments": "\"As shown in Figure 1a, the TP sample exhibits a strong end absorption of the polysaccharide backbone only near 200 nm within the range of 200–800 nm.\" — No obvious absorption at 260 nm (nucleic acid) or 280 nm (protein). [Zhou S, Di N, 2026, Preparation of polysaccharides from <i>Trichosanthes kirilowii</i> Maxim. and their antioxidant and hypoglycemic activities.; confidence: high]" }, { "id": 815, "dataset": "uv_vis", "entity": "dialdehyde starch (DPS, oxidised starch)", "entity_group": "dialdehyde/oxidised starch", "entity_class": "polysaccharide", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "240", "unit": "nm", "value_reported": "240", "unit_reported": "nm", "method": "Experiment", "method_detail": "UV-vis spectrum of DPS; characteristic aldehyde absorption (Fig. 2).", "conditions": "aldehyde group; n-pi* (aldehyde C=O); aqueous", "conditions_detail": "UV-vis spectrum of DPS; characteristic aldehyde absorption (Fig. 2). | solvent: aqueous | chromophore: aldehyde group | transition: n-pi* (aldehyde C=O)", "doi": "10.3390/foods15030487", "source_url": "https://doi.org/10.3390/foods15030487", "year": "2026", "confidence": "high", "comments": "\"DPS displayed a characteristic absorption peak at 240 nm corresponding to an aldehyde group.\" — Band arises from aldehyde groups introduced by periodate oxidation of starch. Unmodified starch shows no UV-vis peaks (see qualitative record). [Shao Y, Cheng Y, Ye X, 2026, Starch Aldehyde-Theaflavin Conjugate: Synthesis, Structure, and Antioxidant and Antimicrobial Activities.; confidence: high]" }, { "id": 816, "dataset": "uv_vis", "entity": "starch", "entity_group": "starch", "entity_class": "polysaccharide", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "no distinct band", "unit": "", "value_reported": "", "unit_reported": "", "method": "Experiment", "method_detail": "UV-vis spectrum of the starch solution; stated to show no absorption peaks.", "conditions": "none; aqueous", "conditions_detail": "UV-vis spectrum of the starch solution; stated to show no absorption peaks. | solvent: aqueous | chromophore: none", "doi": "10.3390/foods15030487", "source_url": "https://doi.org/10.3390/foods15030487", "year": "2026", "confidence": "high", "comments": "\"The starch solution exhibits no absorption peaks in the UV–vis spectrum due to the absence of chromophores.\" — QUALITATIVE negative result (no numeric value); unmodified starch is UV-vis transparent above ~210 nm. [Shao Y, Cheng Y, Ye X, 2026, Starch Aldehyde-Theaflavin Conjugate: Synthesis, Structure, and Antioxidant and Antimicrobial Activities.; confidence: high]" }, { "id": 817, "dataset": "uv_vis", "entity": "water-soluble glycopolymer bearing porphyrin", "entity_group": "glycopolymer-porphyrin", "entity_class": "glycoconjugate/glycopolymer", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "400", "unit": "nm", "value_reported": "400", "unit_reported": "nm", "method": "Experiment", "method_detail": "UV-vis of glycopolymer-porphyrin conjugates in water; Soret band (Fig. 4/6).", "conditions": "porphyrin; Soret band (pi-pi*); water", "conditions_detail": "UV-vis of glycopolymer-porphyrin conjugates in water; Soret band (Fig. 4/6). | solvent: water | chromophore: porphyrin | transition: Soret band (pi-pi*) | sample form: glycopolymer conjugate", "doi": "10.1021/acs.biomac.5c00121", "source_url": "https://doi.org/10.1021/acs.biomac.5c00121", "year": "2025", "confidence": "medium", "comments": "\"Based on the transition of π electrons in the 22π-electron conjugated system, porphyrins have strong optical absorption in the Soret band around 400 nm due to the π–π* transition and weak absorption in the Q-band region around 480–650 nm, which is characterized by forbidden transitions.\" — Chromophore is the porphyrin, not the carbohydrate; included because the material is a carbohydrate-derived glycopolymer. Soret band 'around 400 nm'; paper also monitors 420 nm. [Komano Y, Suzuki M, Matsushita T, Koyama T, Ishimaru Y, Hatano K, Matsuoka K, 2025, Synthesis of Water-Soluble Glycopolymers Bearing Porphyrin by Means of Glycopolymer Assembly and Physical Properties of Glycopolymers Including Ability for Singlet Oxygen Production.; confidence: medium]" }, { "id": 818, "dataset": "uv_vis", "entity": "folate-conjugated chitosan carbon quantum dot (FA-CCNP)", "entity_group": "carbon dot (carbohydrate-derived)", "entity_class": "carbohydrate-derived carbon dot", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "305", "unit": "nm", "value_reported": "290-320", "unit_reported": "nm", "method": "Experiment", "method_detail": "UV-vis absorption of FA-CCNPs; broad peak from free amino groups (chitosan).", "conditions": "amino/aromatic surface states; n-pi* (NH2 non-bonding electrons); water", "conditions_detail": "UV-vis absorption of FA-CCNPs; broad peak from free amino groups (chitosan). | solvent: water | chromophore: amino/aromatic surface states | transition: n-pi* (NH2 non-bonding electrons)", "doi": "10.1039/d5na00964b", "source_url": "https://doi.org/10.1039/d5na00964b", "year": "2026", "confidence": "high", "comments": "\"Because of the n–π* transitions of non-bonding electrons on nitrogen atoms (from NH2 groups), FA-CCNPs showed a distinctive broad absorption peak at about 290–320 nm, indicating the presence of free amino functionalities and the structural integrity of chitosan.\" — Range 290-320 collapses to midpoint 305 nm. Same paper reports chitosan-derived CQDs at ~285 nm and a 370 nm band. [Srivastava SK, Yadav M, Singh P, Tripathi S, Verma AK, Parmar AS, 2026, Biodegradable folate-mediated chitosan-CQD nanocarriers for targeted and stimuli-responsive cisplatin delivery in melanoma.; confidence: high]" }, { "id": 819, "dataset": "uv_vis", "entity": "chitosan-derived carbon quantum dot (CQD)", "entity_group": "carbon dot (carbohydrate-derived)", "entity_class": "carbohydrate-derived carbon dot", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "285", "unit": "nm", "value_reported": "285", "unit_reported": "nm", "method": "Experiment", "method_detail": "UV-vis absorption of CQDs before folate/CQ functionalization (Fig. 3).", "conditions": "carbon core; pi-pi*/n-pi*; water", "conditions_detail": "UV-vis absorption of CQDs before folate/CQ functionalization (Fig. 3). | solvent: water | chromophore: carbon core | transition: pi-pi*/n-pi*", "doi": "10.1039/d5na00964b", "source_url": "https://doi.org/10.1039/d5na00964b", "year": "2026", "confidence": "high", "comments": "\"Because of the n–π* transitions of non-bonding electrons on nitrogen atoms (from NH2 groups), FA-CCNPs showed a distinctive broad absorption peak at about 290–320 nm, indicating the presence of free amino functionalities and the structural integrity of chitosan.\" — Same figure also shows the CQD peak at ~285 nm and a reddened band at 370 nm. [Srivastava SK, Yadav M, Singh P, Tripathi S, Verma AK, Parmar AS, 2026, Biodegradable folate-mediated chitosan-CQD nanocarriers for targeted and stimuli-responsive cisplatin delivery in melanoma.; confidence: high]" }, { "id": 820, "dataset": "uv_vis", "entity": "cellulose nanocrystal (CNC)", "entity_group": "cellulose nanocrystal", "entity_class": "polysaccharide", "property": "UV-vis absorption maximum", "property_key": "lambda_max", "value": "no distinct band", "unit": "", "value_reported": "", "unit_reported": "", "method": "Experiment", "method_detail": "UV-vis spectrum in 200-600 nm (10 mm quartz cuvette); stated no distinct band in 300-600 nm.", "conditions": "UV-vis spectrum in 200-600 nm (10 mm quartz cuvette); stated no distinct band in 300-600 nm.", "conditions_detail": "UV-vis spectrum in 200-600 nm (10 mm quartz cuvette); stated no distinct band in 300-600 nm. | range (nm): 200-600 | sample form: film/composite", "doi": "10.1039/d6ra04356a", "source_url": "https://doi.org/10.1039/d6ra04356a", "year": "2026", "confidence": "high", "comments": "\"As shown in Figure 2B, the CNC spectrum exhibits no distinct absorption band in the 300–600 nm region, consistent with previous reports that cellulose nanocrystals do not possess characteristic electronic transitions in the visible range.\" — QUALITATIVE negative result (no numeric value); documents cellulose transparency in the visible; the visible band in the composite is polypyrrole, not CNC. [Nguyen DQ, Bui QT, Pham VV, Nguyen DC, Vu TT, 2026, Pine sawdust-derived cellulose nanocrystal/polypyrrole composites with enhanced electrochemical performance for supercapacitors.; confidence: high]" } ] }