笔者在大学入学之初就受教于华彤文老师，后来跟随华老师做研究、搞教学、写教材，直至担任《大学化学》主编时依然听取华老师的教诲。在此文中分享40余年来近距离观察、感受和学习华老师严谨治学、勇于担当的教学与研究的态度和方法，期待我国的化学教育教学事业薪火相传，持续发展。

将本科课程中的脑文格反应等有机化学内容与有机太阳能电池研究前沿紧密结合，通过实验让学生深入了解有机化学课程中的化学反应。该实验利用脑文格反应合成了一个宽带隙的稠环电子受体材料A831，通过对实验数据进行分析，确定材料是通过削弱端基的拉电子能力，提升了材料的最低未占有分子轨道(LUMO)能级，进而获得高电压的有机太阳能电池。该实验充分培养了学生运用基础知识解决科研问题的能力，体现了“基础知识–实际应用”的有机实验教学模式，适合作为面向高年级本科生的综合实验教学课程。

In this study, ZnSnO₃/NiO heterostructures were synthesized using a co-precipitation method followed by an annealing process. The gas-sensitive characteristics of the sensors based on these samples were evaluated. The results indicate that the sensor performance was optimized when the molar ratio of Ni to Zn was 1∶2. Specifically, the response values of the ZnSnO₃/NiO-2-based sensor to 100 μL·L^-1 triethylamine (TEA) gas at 220 ℃ reached 70.6, which were 6.1 times higher than that of the pure ZnSnO₃ based sensor. The findings demonstrate that ZnSnO₃/NiO heterostructures exhibited not only short response and recovery times (1 s/18 s) but also good gas selectivity, repeatability, and long-term stability. The enhanced sensing mechanism has been investigated in detail.

聚N-异丙基丙烯酰胺(PNIPAm)交联温敏纳米纤维膜作为一种相变温度易于控制的新兴响应性材料，克服了传统PNIPAm块状水凝胶的生产成本高、响应速率慢和PNIPAm非交联温敏纳米纤维耐水性差的缺点，受到广泛研究并应用于智能开关、温度致动器、水油分离、药物、细胞控制释放和伤口敷料等领域。形貌稳定性和快速响应性是温敏纳米纤维膜在重复体积变化过程中最大的挑战，同时也作为评价PNIPAm温敏纳米纤维膜的实用性最重要指标引起了人们广泛的关注。本文全面综述了PNIPAm温敏纳米纤维膜近二十年来国内外的突破性进展和非交联作用下PNIPAm温敏纳米纤维膜的形貌变化和响应性，重点综合分析了物理和化学交联中交联反应类型、交联度、交联时间和交联分子量对PNIPAm温敏纳米纤维膜的形貌稳定性和响应行为的影响，为之后纤维膜的交联处理提供了理论支持，并对PNIPAm温敏纳米纤维膜的发展及应用前景进行了展望。

Herein, an FMS/CC composite was successfully fabricated by depositing FeMoS₄ onto a pristine carbon fiber cloth (CC) substrate via a facile two-step hydrothermal method. The amorphous nature of the FMS/CC composite endows it with abundant catalytically active sites, thereby accelerating the reduction of I₃^-. More importantly, the dye-sensitized solar cells (DSSCs) prepared by scraping it on flexible titanium mesh with low resistance had low series resistance (R_s). Electrochemical characterizations revealed that the DSSCs employing the FMS/CC counter electrode achieved a power conversion efficiency (PCE) of ca. 9.51% (surpassing the ca. 8.15% efficiency of the Pt counter electrode), open-circuit voltage (V_oc) of ca. 0.79 V, short-circuit current density (J_sc) of ca. 18.31 mA·cm^-2, and fill factor (FF) of ca. 0.65. Moreover, after 100 times of cyclic voltammetry (CV) test, the CV curve remainedunchanged, indicating the excellent stability of FMS/CC in the electrolyte containing I^3-/I^-.

面向化学类(非高分子)专业的高分子化学实验教学发展较为缓慢，亟需紧跟研究前沿，引入新内容。本文总结了近十年的教学改革经验，并以温敏型高分子的制备、溶液性质、光学性能与应用为例，介绍如何通过实验教学内容、实验技术、教学方法等方面的创新，设计符合理科人才培养需求的、契合时代与科学发展的、被学生喜爱与重视的一系列高分子化学实验，以有效解决培养需求与课业负担之间的矛盾，且在不新增开课、课时有限的情况下，加入到化学类专业本科教学体系中，激发学生对学科领域的兴趣，提升学生的探究和创新能力。

利用多齿席夫碱配体H₂L(H₂L=(E)-6-(羟甲基)-N′-((6-甲氧基吡啶-2-基)亚甲基)吡啶酰肼)与Ln(dbm)₃·2H₂O反应，通过溶剂热法，设计与构筑了2例新的三核稀土配合物[Ln₃(dbm)₅(L)₂(CH₃OH)₂]·CH₂Cl₂，其中Ln=Pr (1)、Ho (2)，Hdbm=二苯甲酰甲烷。单晶X射线衍射分析表明：配合物1与2同构，其结构由3个Ln(Ⅲ)离子、5个二苯甲酰甲烷阴离子(dbm^-)、2个席夫碱配体L^2-、2个配位的CH₃OH及1个结晶CH₂Cl₂分子组成。3个中心Ln(Ⅲ)离子通过4个μ₂-O原子相互连接，形成折线形的Ln₃核。生物活性研究表明，配体H₂L、Ln(dbm)₃·2H₂O及配合物1和2均具有较好的抑菌活性。与配体H₂L及Ln(dbm)₃·2H₂O相比较，稀土配合物具有更强的抑菌活性。此外，采用紫外光谱法、循环伏安法和荧光光谱法研究了配合物1和2与小牛胸腺DNA(ctDNA)之间的相互作用，结果表明配合物主要以插入键合的方式与ctDNA结合。

Two new dinuclear lanthanide(Ⅲ) complexes, namely [Ln₂(dbm)₂(HL)₂(CH₃OH)₂]·4CH₃OH [Ln=Tb (1) and Dy (2), Hdbm=dibenzoylmethane] have been synthesized using prepared multidentate Schiff base ligand H₃L (hydroxy-acetic acid(4-diethylamino-2-hydroxy-benzylidene)-hydrazide) with good biological activity. Structure characterizations show that the complex comprises two Ln³⁺ ions, two dbm^- ions, two HL^2- ligands, two CH₃OH molecules, and four free methanol molecules. Each Ln³⁺ ion is eight-coordinated. The two central Ln(Ⅲ) ions are bridged by two μ₂-O atoms leading to a parallelogram [Ln₂O₂] core. The interaction between the compounds (H₃L, 1, and 2) and the calf thymus DNA (CT-DNA) has been further confirmed by UV-Vis spectrometry, fluorescence titration, and cyclic voltammetry. The results showed that both 1 and 2 could undergo insertion with CT-DNA.

Two new binuclear Gd₂ complexes with the molecular formula [Gd₂(L)(H₂L)]·2CH₃OH·CH₃CN (1) and [Gd₂(H₂L)₂(dbm)₂]·6CH₃CN (2) (Hdbm=dibenzoylmethane) have been obtained by using a large conjugated diacylhydrazone organic ligand N′, N‴-(1E, 1′E)-(1, 10-phenanthroline-2, 9-diyl)bis(methaneylylidene) bis (2-hydroxy-benzohydrazide) (H₄L) reacting with Gd(NO₃)₃·6H₂O or Gd(dbm)₃·2H₂O. Structure studies reveal that Gd₂ complexes 1 and 2 belong to a triclinic crystal system with space group P1. Nevertheless, they show different molecule structures. 1 displays a cattail leaf fan shape, while 2 displays a pinwheel-shaped cage. Magnetic properties researches suggest that the two Gd₂ complexes displayed different magnetic refrigeration (-ΔS_m=23.35 and 15.09 J·kg^-1·K^-1 for 1 and 2, respectively). In addition, the synergistic interaction between ligand and Ln(Ⅲ) ions, promotes the two Gd₂ complexes showing excellent antibacterial activity. When the Gd₂ complexes interact with DNA, the Gd₂ complexes mainly insert or cut DNA.

以双齿席夫碱5-[(4-ethylbenzylidene)amino]quinolin-8-ol(HL₁)、5-{[(1，1′-biphenyl)-4-ylmethylene]amino}quinolin-8-ol(HL₂)为配体，与Sm(acac)₃·2H₂O反应，通过溶剂热法，设计与构筑了2例结构新颖的Sm₄配合物[Sm₄(L₁)₆(acac)₄(μ₃-OH)₂]·CH₃CN (1)和[Sm₄(L₂)₆(acac)₄(μ₃-OH)₂]·CH₃CN (2)，其中Hacac=乙酰丙酮。单晶X射线衍射分析表明：配合物1和2结构相似，其结构主要由4个Sm(Ⅲ)离子、4个acac^-、6个L₁^-或L₂^-以及2个μ₃-OH^-组成。中心的4个Sm(Ⅲ)离子通过6个μ₂-O和2个μ₃-OH^-相互连接，形成一个菱形的Sm₄核心。采用紫外光谱法、循环伏安法和荧光光谱法研究了配合物 1和 2与小牛胸腺DNA(CTDNA)之间的相互作用。研究表明，配合物1和2与CTDNA的相互作用是插入结合。