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Here, we report an all\u2010optical, photoswitchable diode\u2010type device for tunable nonreciprocal (asymmetric) transmission of CPL across a broad spectrum of light using molecular motor (photoswitch)\u2010doped cholesteric liquid crystals (CLCs) sandwiched between polyvinyl alcohol (PVA) and polydopamine (PDA)\u2010PVA composite layers. Under ultraviolet irradiation, the photoswitches continuously modulate the helical twisting power of the CLC, enabling reversible tuning of the photonic bandgap (PBG) and, at higher irradiation levels, helix inversion with opposite handedness. Thus, we demonstrate dynamic switching of both the operating wavelength and the isolated CPL helicity within a single device architecture. The asymmetric PDA@PVA photothermal interface enables forward photothermal activation of the cholesteric\u2013isotropic transition while maintaining spin\u2010selective Bragg reflection under backward incidence. This mechanism enables wavelength\u2010tunable and chirality\u2010adaptive nonreciprocal transmission for both right\u2010 and left\u2010handed CPL. The device achieves isolation ratios exceeding 15.10\u00a0dB at all tested wavelengths, with a maximum value of 15.80\u00a0dB at 980\u00a0nm, while maintaining insertion losses below 2.89\u00a0dB, reaching as low as 1.05\u00a0dB. Furthermore, the operating thresholds and thermal tolerance can be tailored through liquid\u2010crystal composition.<\/jats:p>","DOI":"10.1002\/adma.74882","type":"journal-article","created":{"date-parts":[[2026,8,31]],"date-time":"2026-08-31T13:39:46Z","timestamp":1788183586000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Wavelength\u2010 and Helicity\u2010Reconfigurable Circularly Polarized Optical Diodes Enabled by Molecular Photoswitches"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0009-0004-2673-1714","authenticated-orcid":false,"given":"Chaoguang","family":"Ye","sequence":"first","affiliation":[{"name":"SCNU\u2010TUE Joint Lab of Device Integrated Responsive Materials (DIRM) Guangdong Provincial Key Laboratory of Optical Information Materials and Technology National Center for International Research on Green Optoelectronics South China Academy of Advanced Optoelectronics South China Normal University  Guangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ming","family":"Yuan","sequence":"additional","affiliation":[{"name":"SCNU\u2010TUE Joint Lab of Device Integrated Responsive Materials (DIRM) Guangdong Provincial Key Laboratory of Optical Information Materials and Technology National Center for International Research on Green Optoelectronics South China Academy of Advanced Optoelectronics South China Normal University  Guangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiaxin","family":"Liu","sequence":"additional","affiliation":[{"name":"SCNU\u2010UG International Joint Laboratory of Molecular Science and Displays National Center for International Research on Green Optoelectronics South China Normal University  Guangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei","family":"Zhou","sequence":"additional","affiliation":[{"name":"SCNU\u2010TUE Joint Lab of Device Integrated 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South China Normal University  Guangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1233-5599","authenticated-orcid":false,"given":"Jiawen","family":"Chen","sequence":"additional","affiliation":[{"name":"SCNU\u2010UG International Joint Laboratory of Molecular Science and Displays National Center for International Research on Green Optoelectronics South China Normal University  Guangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9040-5719","authenticated-orcid":false,"given":"Lakshminarayana","family":"Polavarapu","sequence":"additional","affiliation":[{"name":"Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter School of Physics South China Normal University  Guangzhou China"},{"name":"CINBIO Department of Physical Chemistry Materials Chemistry and Physics Group Universidade De Vigo  Vigo 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