华侨大学学报（自然科学版）2026，Vol.47Issue(3)：318-323,6.DOI:10.11830/ISSN.1000-5013.202602006
综纤维素本征荧光及变温发光机制分析
Intrinsic Fluorescence and Temperature-Dependent Luminescence Mechanism Analysis of Holocellulose
摘要
Abstract
Holocellulose was prepared via the sodium chlorite method,and its chemical structural features were identified using Fourier-transform infrared spectrum,X-ray photoelectron spectrum and X-ray diffrac-tion.The fluorescence characteristics were crucially investigated by the steady-state,transient-state and tem-perature-dependent spectrum.The intrinsic luminescence laws were analyzed and the luminescence mechanism was interpreted in combination with structural features.The results showed that the holocellulose exhibited significant excitation wavelength dependence,with the optimal excitation wavelength and emission wavelength of 390 and 490 nm respectively,the lifetime of 2.78 ns,and the quantum yield of 2.79%.The fluorescence was thermally activated and enhanced due to conformational optimization in the temperature range of 80-140 K.In the temperature range of 140-320 K,a thermal quenching trend was then dominated by thermal dissipation.The main emission peak was relatively stable during the temperature variation,indicating excellent thermal sta-bility.关键词
综纤维素/本征荧光/变温荧光/热激活Key words
holocellulose/intrinsic fluorescence/temperature-dependent fluorescence/thermal activation分类
化学化工引用本文复制引用
张婉靖,肖燕珍,王秋祥,王澌洁,黄昀昉..综纤维素本征荧光及变温发光机制分析[J].华侨大学学报（自然科学版）,2026,47(3):318-323,6.基金项目
国家自然科学基金联合重点项目(U20A20150) （U20A20150）
福建省青年科技人员育成项目(2025350093) （2025350093）
福建省南平市科技局科技成果转化项目(N2024K007) （N2024K007）
华侨大学实验教学改革与管理项目(SY2025G03) （SY2025G03）
