Synthesis of Semisynthetic Dual-State Fluorescent Polymers and Roles of Starch/Pectin on AIET-Assisted Dual-Emission, Conductivity, and Metal-Ion Sensing
Bibliographic record
Abstract
The strategic and systematic synthesis of aggregation-induced energy transfer (AIET)-active dual-state emitting semisynthetic polymeric materials having promising conductivity and suitability in heavy and transition metal ion (HTMI) sensing is indeed a challenging task especially involving purely aliphatic moieties. In this work, initially, synthetic aliphatic macromolecular luminogens (AMLs) are synthesized and optimized through nuclear magnetic resonance (NMR)/Fourier transform infrared (FTIR) spectroscopy and thermogravimetric (TG) analyses based on the optimized incorporation of atypical heteroatomic fluorophores (AHFs), i.e., −CONH–, −CON<, and −COOH, of constituent isopropylacrylamide, methylpropanoic acid, methylidenebutanedioic acid comonomers, and in situ anchored tertiary amidic 3-( N -isopropylmethacrylamido)-2-methylpropanoic acid. The efficacy of supramolecular interaction-driven emission in optimized AML4 is further augmented by the encapsulation of starch and pectin in semisynthetic starch-grafted-AML (SAML) and pectin-grafted-AML (PAML) through the enrichment of AHFs. Among SAMLs/PAMLs, the optimization of AHFs and natural polymers (starch/pectin) through various spectroscopic techniques and I / I 0 measurements emerges excellent dual-state (solid and solution) emissions and conductivity in SAML3/PAML4. The AIET-assisted dual-light emissions are envisaged by absorption spectra, time-correlated single photon count (TCSPC) studies, and bandgap calculations of SAML3-/PAML4-aggregate and SAML3/PAML4. The AIET-prompted emission in SAML3-/PAML4-aggregate is further attested through concentration-dependent emission and aggregation-enhanced emission studies, solvent polarity effects, quantum yield calculations, and scanning electron microscopy photomicrographs. The grafting-associated conductivity increment in SAML3/PAML4 is substantiated by I–V and impedance spectroscopy. The dual-emission phenomena in SAML3/PAML4 enable rapid, selective, and sensitive detections (in ppb levels) of Cu(II)/Cr(III) and Hg(II)/Fe(III) at different wavelengths by SAML3/SAML3-aggregate and PAML4/PAML4-aggregate, respectively. The strong coordination of the HTMIs with AHFs of SAML3/PAML4 and SAML3-/PAML4-aggregate are confirmed by absorption, emission, NMR, FTIR, and X-ray photoelectron spectroscopies; TG analyses; dynamic light scattering measurements; and TCSPC studies.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".